AuxKernels

• Thermal Hydraulics App
• ADConvectiveHeatFlux1PhaseAuxComputes convective heat flux for 1-phase flow.
• ADVectorVelocityComponentAuxComputes the velocity from the 1D phase-fraction and area weighted momentum and density variables.
• ConvectiveHeatFlux1PhaseAuxComputes convective heat flux for 1-phase flow.
• MachNumberAuxComputes Mach number.
• PrandtlNumberAuxComputes the Prandtl number for the fluid in the simulation domain
• ReynoldsNumberAuxComputes the Reynolds number.
• ShaftConnectedCompressor1PhaseAuxComputes various quantities for a ShaftConnectedCompressor1Phase.
• ShaftConnectedPump1PhaseAuxComputes various quantities for a ShaftConnectedPump1Phase.
• ShaftConnectedTurbine1PhaseAuxComputes various quantities for a ShaftConnectedTurbine1Phase.
• SimpleTurbinePowerFieldAuxComputes turbine power for 1-phase flow for a simple on/off turbine
• SoundSpeedAuxComputes the speed of sound.
• SpecificTotalEnthalpyAuxCompute the specific total enthalpy
• SumAuxSum of nonlinear or auxiliary variables
• THMSpecificInternalEnergyAuxComputed the specific internal energy.
• THMSpecificVolumeAuxComputes the specific volume for the phase.
• VariableValueTransferAuxRetrieves a field value from the closest node on the paired boundary and stores it on this boundary or block.
• VectorVelocityComponentAuxComputes the component of a vector-valued velocity field given by its magnitude and direction.
• VolumeJunction1PhaseAuxComputes various quantities for a VolumeJunction1Phase.
• WeightedAverageAuxWeighted average of variables using other variables as weights

AuxScalarKernels

• Thermal Hydraulics App
• ShaftConnectedCompressor1PhaseScalarAuxComputes various quantities for a ShaftConnectedCompressor1Phase.
• ShaftConnectedPump1PhaseScalarAuxComputes various quantities for a ShaftConnectedPump1Phase.
• ShaftConnectedTurbine1PhaseScalarAuxComputes various quantities for a ShaftConnectedTurbine1Phase.
• SimpleTurbinePowerAuxComputes turbine power for 1-phase flow for a simple on/off turbine
• SimpleTurbinePowerScalarAuxComputes turbine power for 1-phase flow for a simple on/off turbine
• VolumeJunction1PhaseScalarAuxComputes various quantities for a VolumeJunction1Phase.

AuxVariables

BCs

• Thermal Hydraulics App
• ADBoundaryFlux3EqnBCBoundary conditions for the 1-D, 1-phase, variable-area Euler equations
• ADConvectionHeatTransfer3DBCAdds a convective heat flux boundary condition between the local component heat structure and a 3D heat structure
• ADConvectionHeatTransferBCAdds a convective heat flux boundary condition with user-specified ambient temperature and heat transfer coefficient functions
• ADConvectionHeatTransferRZBCConvection BC for RZ domain in XY coordinate system
• ADExternalAppConvectionHeatTransferBCConvection BC from an external application
• ADExternalAppConvectionHeatTransferRZBCConvection BC from an external application for RZ domain in XY coordinate system
• ADGateValve1PhaseBCAdds boundary fluxes for flow channels connected to a 1-phase gate valve
• ADHSHeatFluxBCApplies a specified heat flux to the side of a plate heat structure
• ADHSHeatFluxRZBCApplies a specified heat flux to the side of a cylindrical heat structure in XY coordinates
• ADHeatFlux3EqnBCWall heat flux boundary condition for the energy equation
• ADJunctionOneToOne1PhaseBCAdds boundary fluxes for flow channels connected to a 1-phase one-to-one junction
• ADRadiativeHeatFluxBCRadiative heat transfer boundary condition for a plate heat structure
• ADRadiativeHeatFluxRZBCRadiative heat transfer boundary condition for a cylindrical heat structure
• ADVolumeJunction1PhaseBCAdds boundary fluxes for flow channels connected to a 1-phase volume junction
• BoundaryFlux3EqnBCBoundary conditions for the 1-D, 1-phase, variable-area Euler equations
• ConvectionHeatTransferBCAdds a convective heat flux boundary condition with user-specified ambient temperature and heat transfer coefficient functions
• ConvectionHeatTransferRZBCConvection BC for RZ domain in XY coordinate system
• ExternalAppConvectionHeatTransferBCConvection BC from an external application
• ExternalAppConvectionHeatTransferRZBCConvection BC from an external application for RZ domain in XY coordinate system
• HSCoupler2D2DRadiationRZBCAdds boundary heat flux terms for HSCoupler2D2DRadiation
• HSCoupler2D3DBCAdds boundary heat flux terms for HSCoupler2D3D
• HeatStructure2DCouplerBCApplies BC for HeatStructure2DCoupler for plate heat structure
• HeatStructure2DCouplerRZBCApplies BC for HeatStructure2DCoupler for cylindrical heat structure in a XY coordinate system
• HeatStructure2DRadiationCouplerRZBCApplies BC for HeatStructure2DRadiationCouplerRZ
• RadiativeHeatFluxBCRadiative heat transfer boundary condition for a plate heat structure
• RadiativeHeatFluxRZBCRadiative heat transfer boundary condition for a cylindrical heat structure in a XY coordinate system

Closures

• Thermal Hydraulics App
• AddClosuresActionAdds a Closures object.
• Closures1PhaseNoneNo 1-phase closures. Useful for testing with one-time correlations.
• Closures1PhaseSimpleSimple 1-phase closures
• Closures1PhaseTHMClosures for 1-phase flow channels

Components

• Thermal Hydraulics App
• THMCreateMeshActionAction that creates an empty mesh (in case one was not already created) and also builds THMProblem (same).
• AddComponentActionBase class for all the actions creating a MOOSE object
• AddComponentActionBase class for all the actions creating a MOOSE object
• ComponentGroupGroup of components. Used only for parsing input files.
• ElbowPipe1PhaseBent pipe for 1-phase flow
• FileMeshComponentLoads a mesh from an ExodusII file without adding physics.
• FileMeshPhysicsComponentComponent using a mesh from a file with one or more Physics active on it.
• FlowChannel1Phase1-phase 1D flow channel
• FormLossFromExternalApp1PhaseApply a distributed form loss over a 1-phase flow channel computed by an external application.
• FormLossFromFunction1PhasePrescribe a form loss over a 1-phase flow channel given by a function
• FreeBoundaryComponent to create a free flow boundary for 1D flow. This component is deprecated.
• FreeBoundary1PhaseComponent to create a free flow boundary for single-phase flow.
• GateValveGate valve component
• GateValve1PhaseGate valve component for 1-phase flow
• HSBoundaryAmbientConvectionApplies a convective boundary condition to a heat structure
• HSBoundaryExternalAppConvectionHeat structure boundary condition to perform convective heat transfer with an external application
• HSBoundaryExternalAppHeatFluxHeat structure boundary condition to apply a heat flux transferred from another application.
• HSBoundaryExternalAppTemperatureHeat structure boundary condition to set temperature values computed by an external application
• HSBoundaryHeatFluxApplies a specified heat flux to a heat structure boundary
• HSBoundaryRadiationRadiative heat transfer boundary condition for heat structure
• HSBoundarySpecifiedTemperatureApplies Dirichlet boundary conditions on a heat structure
• HSCoupler2D2DRadiationCouples boundaries of multiple 2D heat structures via radiation
• HSCoupler2D3DCouples a 2D heat structure boundary to a 3D heat structure boundary using gap heat transfer.
• HeatGenerationSpecify a heat source in a heat structure. This component is deprecated.
• HeatSourceFromPowerDensityHeat source from power density
• HeatSourceFromTotalPowerHeat generation from total power
• HeatSourceVolumetricVolumetric heat source applied on a flow channel
• HeatSourceVolumetric1PhaseVolumetric heat source applied on a flow channel
• HeatStructure2DCouplerCouples boundaries of two 2D heat structures via a heat transfer coefficient
• HeatStructure2DRadiationCouplerRZCouples boundaries of two 2D cylindrical heat structures via radiation
• HeatStructureCylindricalCylindrical heat structure
• HeatStructureFromFile3DHeat structure component that loads a 3D mesh from an ExodusII file
• HeatStructurePlatePlate heat structure
• HeatTransferFromExternalAppHeatFlux1PhaseHeat transfer specified by heat flux provided by an external application going into 1-phase flow channel.
• HeatTransferFromExternalAppTemperature1PhaseHeat transfer into 1-phase flow channel from temperature provided by an external application
• HeatTransferFromHeatFlux1PhaseHeat transfer specified by heat flux going into 1-phase flow channel.
• HeatTransferFromHeatStructure1PhaseConnects a 1-phase flow channel and a heat structure
• HeatTransferFromHeatStructure3D1PhaseConnects multiple 1-phase flow channels and a 3D heat structure
• HeatTransferFromSpecifiedTemperature1PhaseHeat transfer connection from a fixed temperature function for 1-phase flow
• InletDensityVelocity1PhaseBoundary condition with prescribed density and velocity for 1-phase flow channels.
• InletMassFlowRateTemperature1PhaseBoundary condition with prescribed mass flow rate and temperature for 1-phase flow channels.
• InletStagnationEnthalpyMomentum1PhaseBoundary condition with prescribed stagnation enthalpy and momentum for 1-phase flow channels.
• InletStagnationPressureTemperature1PhaseBoundary condition with prescribed stagnation pressure and temperature for 1-phase flow channels.
• InletVelocityTemperature1PhaseBoundary condition with prescribed velocity and temperature for 1-phase flow channels.
• JunctionOneToOneJunction connecting one flow channel to one other flow channel
• JunctionOneToOne1PhaseJunction connecting one flow channel to one other flow channel for 1-phase flow
• JunctionParallelChannels1PhaseJunction between 1-phase flow channels that are parallel
• Outlet1PhaseBoundary condition with prescribed pressure for 1-phase flow channels.
• PrescribedReactorPowerSpecifies the total power of a component. This component is deprecated
• Pump1PhasePump between two 1-phase flow channels that has a non-zero volume
• ShaftComponent that connects torque of turbomachinery components
• ShaftConnectedCompressor1Phase1-phase compressor that must be connected to a Shaft component. Compressor speed is controlled by the connected shaft; Isentropic/Dissipation torque and delta_p are computed by user input functions of inlet flow rate and shaft speed
• ShaftConnectedMotorMotor to drive a shaft component
• ShaftConnectedPump1Phase1-phase pump that must be connected to a Shaft component. Pump speed is controlled by the connected shaft; Hydraulic torque and head are computed by user input functions of inlet flow rate and shaft speed
• ShaftConnectedTurbine1Phase1-phase turbine that must be connected to a Shaft component. Turbine speed is controlled by the connected shaft; Driving torque and delta_p are computed by user input functions of inlet flow rate (flow coefficient aux variable) and shaft speed
• SimpleTurbine1PhaseSimple turbine model that extracts prescribed power from the working fluid
• SolidWallAdds the boundary condition for a wall. This component is deprecated.
• SolidWall1PhaseAdds the boundary condition for a wall in single phase flow
• SupersonicInletDeprecated component to add a supersonic flow inlet
• TotalPowerPrescribes total power via a user supplied value
• VolumeJunction1PhaseJunction between 1-phase flow channels that has a non-zero volume
• ComponentGroupGroup of components. Used only for parsing input files.
• ElbowPipe1PhaseBent pipe for 1-phase flow
• FileMeshComponentLoads a mesh from an ExodusII file without adding physics.
• FileMeshPhysicsComponentComponent using a mesh from a file with one or more Physics active on it.
• FlowChannel1Phase1-phase 1D flow channel
• FormLossFromExternalApp1PhaseApply a distributed form loss over a 1-phase flow channel computed by an external application.
• FormLossFromFunction1PhasePrescribe a form loss over a 1-phase flow channel given by a function
• FreeBoundaryComponent to create a free flow boundary for 1D flow. This component is deprecated.
• FreeBoundary1PhaseComponent to create a free flow boundary for single-phase flow.
• GateValveGate valve component
• GateValve1PhaseGate valve component for 1-phase flow
• HSBoundaryAmbientConvectionApplies a convective boundary condition to a heat structure
• HSBoundaryExternalAppConvectionHeat structure boundary condition to perform convective heat transfer with an external application
• HSBoundaryExternalAppHeatFluxHeat structure boundary condition to apply a heat flux transferred from another application.
• HSBoundaryExternalAppTemperatureHeat structure boundary condition to set temperature values computed by an external application
• HSBoundaryHeatFluxApplies a specified heat flux to a heat structure boundary
• HSBoundaryRadiationRadiative heat transfer boundary condition for heat structure
• HSBoundarySpecifiedTemperatureApplies Dirichlet boundary conditions on a heat structure
• HSCoupler2D2DRadiationCouples boundaries of multiple 2D heat structures via radiation
• HSCoupler2D3DCouples a 2D heat structure boundary to a 3D heat structure boundary using gap heat transfer.
• HeatGenerationSpecify a heat source in a heat structure. This component is deprecated.
• HeatSourceFromPowerDensityHeat source from power density
• HeatSourceFromTotalPowerHeat generation from total power
• HeatSourceVolumetricVolumetric heat source applied on a flow channel
• HeatSourceVolumetric1PhaseVolumetric heat source applied on a flow channel
• HeatStructure2DCouplerCouples boundaries of two 2D heat structures via a heat transfer coefficient
• HeatStructure2DRadiationCouplerRZCouples boundaries of two 2D cylindrical heat structures via radiation
• HeatStructureCylindricalCylindrical heat structure
• HeatStructureFromFile3DHeat structure component that loads a 3D mesh from an ExodusII file
• HeatStructurePlatePlate heat structure
• HeatTransferFromExternalAppHeatFlux1PhaseHeat transfer specified by heat flux provided by an external application going into 1-phase flow channel.
• HeatTransferFromExternalAppTemperature1PhaseHeat transfer into 1-phase flow channel from temperature provided by an external application
• HeatTransferFromHeatFlux1PhaseHeat transfer specified by heat flux going into 1-phase flow channel.
• HeatTransferFromHeatStructure1PhaseConnects a 1-phase flow channel and a heat structure
• HeatTransferFromHeatStructure3D1PhaseConnects multiple 1-phase flow channels and a 3D heat structure
• HeatTransferFromSpecifiedTemperature1PhaseHeat transfer connection from a fixed temperature function for 1-phase flow
• InletDensityVelocity1PhaseBoundary condition with prescribed density and velocity for 1-phase flow channels.
• InletMassFlowRateTemperature1PhaseBoundary condition with prescribed mass flow rate and temperature for 1-phase flow channels.
• InletStagnationEnthalpyMomentum1PhaseBoundary condition with prescribed stagnation enthalpy and momentum for 1-phase flow channels.
• InletStagnationPressureTemperature1PhaseBoundary condition with prescribed stagnation pressure and temperature for 1-phase flow channels.
• InletVelocityTemperature1PhaseBoundary condition with prescribed velocity and temperature for 1-phase flow channels.
• JunctionOneToOneJunction connecting one flow channel to one other flow channel
• JunctionOneToOne1PhaseJunction connecting one flow channel to one other flow channel for 1-phase flow
• JunctionParallelChannels1PhaseJunction between 1-phase flow channels that are parallel
• Outlet1PhaseBoundary condition with prescribed pressure for 1-phase flow channels.
• PrescribedReactorPowerSpecifies the total power of a component. This component is deprecated
• Pump1PhasePump between two 1-phase flow channels that has a non-zero volume
• ShaftComponent that connects torque of turbomachinery components
• ShaftConnectedCompressor1Phase1-phase compressor that must be connected to a Shaft component. Compressor speed is controlled by the connected shaft; Isentropic/Dissipation torque and delta_p are computed by user input functions of inlet flow rate and shaft speed
• ShaftConnectedMotorMotor to drive a shaft component
• ShaftConnectedPump1Phase1-phase pump that must be connected to a Shaft component. Pump speed is controlled by the connected shaft; Hydraulic torque and head are computed by user input functions of inlet flow rate and shaft speed
• ShaftConnectedTurbine1Phase1-phase turbine that must be connected to a Shaft component. Turbine speed is controlled by the connected shaft; Driving torque and delta_p are computed by user input functions of inlet flow rate (flow coefficient aux variable) and shaft speed
• SimpleTurbine1PhaseSimple turbine model that extracts prescribed power from the working fluid
• SolidWallAdds the boundary condition for a wall. This component is deprecated.
• SolidWall1PhaseAdds the boundary condition for a wall in single phase flow
• SupersonicInletDeprecated component to add a supersonic flow inlet
• TotalPowerPrescribes total power via a user supplied value
• VolumeJunction1PhaseJunction between 1-phase flow channels that has a non-zero volume

Constraints

• Thermal Hydraulics App
• MassFreeConstraintConstrains the momentum at the user-specified nodes along the user-specified normals

ControlLogic

• Thermal Hydraulics App
• THMAddControlActionAdds Controls from the ControlLogic block.
• CopyPostprocessorValueControlForwards the value of a postprocessor to a ControlData named with the name of the postprocessor.
• DelayControlTime delay control
• GetFunctionValueControlSets a ControlData named 'value' with the value of a function
• PIDControlDeclares a control data named 'output' and uses Proportional Integral Derivative logic on the 'value' control data to set it.
• ParsedFunctionControlControl that evaluates a parsed function
• SetBoolValueControlControl object that reads a boolean value computed by the control logic system and sets it into a specified MOOSE object parameter(s)
• SetComponentBoolValueControlControl to set a boolean value of a component parameter with control data boolean
• SetComponentRealValueControlControl to set a floating point (Real) value of a component parameter with control data boolean
• SetRealValueControlControl object that reads a Real value computed by the control logic system and sets it into a specified MOOSE object parameter(s)
• SmootherControlComputes a moving average value of the input control with a user-specified number of points to average. The output control value is named 'name:value', where 'name' is the name of the control object.
• THMSolvePostprocessorControlControl the solve based on a postprocessor value
• TerminateControlTerminates the simulation when a THMControl boolean data becomes true
• TimeFunctionComponentControlControls a parameter in a Component using a function
• UnitTripControlTrips a boolean based on the evaluation of a parsed condition expression

CoupledHeatTransfers

• Thermal Hydraulics App
• CoupledHeatTransferActionAction that creates the necessary objects, for the solid side, to couple a solid heat conduction region to a 1-D flow channel via convective heat transfer

DGKernels

• Thermal Hydraulics App
• ADNumericalFlux3EqnDGKernelAdds side fluxes for the 1-D, 1-phase, variable-area Euler equations
• NumericalFlux3EqnDGKernelAdds side fluxes for the 1-D, 1-phase, variable-area Euler equations

Debug

• Thermal Hydraulics App
• AddIterationCountPostprocessorsActionAdds postprocessors for linear and nonlinear iterations
• THMDebugActionAdd specific THM debugging option.
• THMPrintComponentLoopsActionPrints the component loops

FluidProperties

• Thermal Hydraulics App
• LinearFluidPropertiesFluid properties for a fluid with density linearly dependent on temperature and pressure

Functions

• Thermal Hydraulics App
• CircularAreaHydraulicDiameterFunctionComputes hydraulic diameter for a circular area from its area function
• CosineHumpFunctionComputes a cosine hump of a user-specified width and height
• CosineTransitionFunctionComputes a cosine transtition of a user-specified width between two values
• CubicTransitionFunctionComputes a cubic polynomial transition between two functions
• GeneralizedCircumferenceComputes a generalized circumference from a function providing the area.
• PiecewiseFunctionFunction which provides a piecewise representation of arbitrary functions
• TimeRampFunctionRamps up to a value from another value over time.

HeatStructureMaterials

• Thermal Hydraulics App
• AddHeatStructureMaterialActionAdds HeatStructureMaterials to the Problem
• SolidMaterialPropertiesUser object to compute solid material properties using functions of temperature

ICs

• Thermal Hydraulics App
• FunctionNodalAverageICInitial conditions for an elemental variable from a function using nodal average.
• RhoEAFromPressureTemperatureFunctionVelocityICSet the initial condition for rho*E*A from pressure and temperature variables and a velocity scalar function
• RhoEAFromPressureTemperatureVelocityICSet the initial condition for rho*E*A from pressure, temperature and a scalarfield velocity variable
• SpecificInternalEnergyICSets the initial condition for the specific internal energy of a phase
• SpecificTotalEnthalpyICSets the initial condition for the special total enthalpy of a phase
• SpecificVolumeICSets an initial condition for the specific volume of a phase
• SumICSets the initial condition as the sum of other variables
• VariableFunctionProductICSets the initial condition as the product of a variable and a function
• VariableProductICSets the initial condition as the product of several variables
• VectorVelocityICComputes velocity in the direction of a 1-D element from a vector velocity function

Kernels

• Thermal Hydraulics App
• ADHeatConductionRZAdds a heat conduction term in XY coordinates interpreted as cylindrical coordinates
• ADHeatConductionTimeDerivativeRZAdds a time derivative term for the energy equation in XY coordinates interpreted as cylindrical coordinates
• ADHeatStructureHeatSourceAdds a heat source term for the energy equation
• ADHeatStructureHeatSourceRZAdds a heat source term in XY coordinates interpreted as cylindrical coordinates
• ADOneD3EqnEnergyGravityComputes the gravity term for the energy equation in 1-phase flow
• ADOneD3EqnEnergyHeatFluxComputes a heat flux term for the energy equation in a flow channel
• ADOneD3EqnEnergyHeatFluxFromHeatStructure3DComputes a heat flux term from a 3D heat structure in the energy equation for 1-phase flow
• ADOneD3EqnMomentumAreaGradientComputes the area gradient term in the momentum equation for single phase flow.
• ADOneD3EqnMomentumFormLossComputes a volumetric form loss for the momentum equation for 1-phase flow
• ADOneD3EqnMomentumFrictionComputes wall friction term for single phase flow.
• ADOneD3EqnMomentumGravityComputes gravity term for the momentum equation for 1-phase flow
• ADOneDEnergyWallHeatFluxComputes a heat flux term for the energy equation
• ADOneDEnergyWallHeatingComputes a convective heat flux term for the energy equation for 1-phase flow
• ADVolumeJunctionAdvectionKernelAdds advective fluxes for the junction variables for a volume junction
• CoupledForceRZAdds a coupled force term in XY coordinates interpreted as cylindrical coordinates
• OneD3EqnEnergyFluxComputes an energy flux for single phase flow
• OneD3EqnEnergyGravityComputes a gravity term for the energy equation in 1-phase flow
• OneD3EqnEnergyHeatSourceComputes a volumetric heat source for 1-phase flow channel
• OneD3EqnMomentumAreaGradientComputes the area gradient term in the momentum equation for single phase flow.
• OneD3EqnMomentumFluxComputes a momentum flux term for 1-phase flow
• OneD3EqnMomentumFormLossComputes a form loss term for the momentum equation for 1-phase flow
• OneD3EqnMomentumFrictionComputes wall friction term for single phase flow.
• OneD3EqnMomentumGravityComputes gravity term for the momentum equation for 1-phase flow
• OneDEnergyWallHeatFluxAdds a heat flux along the local heated perimeter
• OneDEnergyWallHeatingAdds a convective heat flux term from a wall temperature

Materials

• Thermal Hydraulics App
• ADAverageWallTemperature3EqnMaterialWeighted average wall temperature from multiple sources for 1-phase flow
• ADConstantMaterialDefines a constant AD material property
• ADConvectionHeatFluxHSMaterialComputes heat flux from convection with heat structure for a given fluid phase.
• ADConvectionHeatFluxMaterialComputes heat flux from convection for a given fluid phase.
• ADConvectiveHeatTransferCoefficientMaterialComputes convective heat transfer coefficient from Nusselt number
• ADCoupledVariableValueMaterialStores values of a variable into material properties
• ADDynamicViscosityMaterialComputes dynamic viscosity as a material property
• ADFluidProperties3EqnMaterialDefines material properties from fluid properties to serve in the 3-equation model
• ADHydraulicDiameterCircularMaterialDefines a circular-equivalent hydraulic diameter from the local area
• ADMaterialFunctionProductMaterialComputes the product of a material property and a function.
• ADPrandtlNumberMaterialComputes Prandtl number as material property
• ADRDG3EqnMaterialReconstructed solution values for the 1-D, 1-phase, variable-area Euler equations
• ADReynoldsNumberMaterialComputes Reynolds number as a material property
• ADSolidMaterialComputes solid thermal properties as a function of temperature
• ADTemperatureWall3EqnMaterialComputes the wall temperature from the fluid temperature, the heat flux and the heat transfer coefficient
• ADWallFrictionChengMaterialComputes wall friction factor using the Cheng-Todreas correlation for interior, edge and corner channels.
• ADWallFrictionChurchillMaterialComputes the Darcy friction factor using the Churchill correlation.
• ADWallFrictionFunctionMaterialDefines a Darcy friction factor equal to the value of the function at the local coordinates and time
• ADWallHTCGnielinskiAnnularMaterialComputes wall heat transfer coefficient for gases and water in an annular flow channel using the Gnielinski correlation
• ADWallHeatTransferCoefficient3EqnDittusBoelterMaterialComputes wall heat transfer coefficient using Dittus-Boelter equation
• ADWallHeatTransferCoefficientGnielinskiMaterialComputes wall heat transfer coefficient for gases and water using the Gnielinski correlation
• ADWallHeatTransferCoefficientKazimiMaterial Computes wall heat transfer coefficient for liquid sodium using Kazimi-Carelli correlation
• ADWallHeatTransferCoefficientLyonMaterialComputes wall heat transfer coefficient for liquid sodium using Lyon correlation
• ADWallHeatTransferCoefficientMikityukMaterialComputes wall heat transfer coefficient for liquid sodium using Mikityuk correlation
• ADWallHeatTransferCoefficientSchadMaterialComputes wall heat transfer coefficient for liquid sodium using Schad-modified correlation
• ADWallHeatTransferCoefficientWeismanMaterialComputes wall heat transfer coefficient for water using the Weisman correlation
• ADWallHeatTransferCoefficientWolfMcCarthyMaterialComputes wall heat transfer coefficient using Wolf-McCarthy correlation
• ADWeightedAverageMaterialWeighted average of material properties using variables as weights
• AverageWallTemperature3EqnMaterialWeighted average wall temperature from multiple sources for 1-phase flow
• ConstantMaterialDefines a single constant material property, along with zero derivative material properties for user-defined variables
• ConvectiveHeatTransferCoefficientMaterialComputes convective heat transfer coefficient from Nusselt number
• CoupledVariableValueMaterialStores values of a variable into material properties
• DirectionMaterialComputes the direction of 1D elements
• DynamicViscosityMaterialComputes the dynamic viscosity as a material property
• FluidProperties3EqnMaterialDefines material properties from fluid properties to serve in the 3-equation model
• HydraulicDiameterCircularMaterialDefines a circular-equivalent hydraulic diameter from the local area
• MeshAlignmentVariableTransferMaterialCreates an AD material property for a variable transferred from the boundary of a 2D mesh onto a 1D mesh.
• PrandtlNumberMaterialComputes the Prandtl number as a material property
• RDG3EqnMaterialReconstructed solution values for the 1-D, 1-phase, variable-area Euler equations
• ReynoldsNumberMaterialComputes Reynolds number as a material property
• TemperatureWall3EqnMaterialComputes the wall temperature from the fluid temperature, the heat flux and the heat transfer coefficient
• WallFrictionChurchillMaterialComputes the Darcy friction factor using the Churchill correlation.
• WallFrictionFunctionMaterialDefines a Darcy friction factor equal to the value of the function at the local coordinates and time
• WallHeatTransferCoefficient3EqnDittusBoelterMaterialComputes wall heat transfer coefficient using Dittus-Boelter equation
• WeightedAverageMaterialWeighted average of material properties using variables as weights

Mesh

• Thermal Hydraulics App
• THMMeshCreates a mesh (nodes and elements) for the Components

Modules

Outputs

• Thermal Hydraulics App
• THMOutputVectorVelocityActionLets the user specify the variable type for the velocity output
• THMSetupOutputActionSets up output for THM.
• ParaviewComponentAnnotationMapBase class for all file-based output

Postprocessors

• Thermal Hydraulics App
• PostprocessorAsControlActionThis action adds a control object that copies a postprocessor value into the control system so that users can work with the postprocessor name directly.
• ADElementIntegralMaterialPropertyRZComputes the volume integral of a material property for an RZ geometry.
• ADFlowBoundaryFlux1PhaseRetrieves an entry of a flux vector for a connection attached to a 1-phase junction
• ADFlowJunctionFlux1PhaseRetrieves an entry of a flux vector for a connection attached to a 1-phase junction
• ADHeatRateConvection1PhaseComputes convective heat rate into a 1-phase flow channel
• ADHeatRateDirectFlowChannelComputes the heat rate into a flow channel from heat flux material property
• ADHeatStructureEnergyComputes the total energy for a plate heat structure.
• ADHeatStructureEnergy3DComputes the total energy for a 3D heat structure.
• ADHeatStructureEnergyRZComputes the total energy for a cylindrical heat structure.
• ADSideFluxIntegralRZIntegrates a diffusive flux over a boundary of a 2D RZ domain.
• ADSpecificImpulse1PhaseEstimates specific impulse from fluid state at a boundary
• BoolComponentParameterValuePostprocessorPostprocessor for reading a boolean value from the control logic system.
• BoolControlDataValuePostprocessorOutput the value of a boolean ControlData as a postprocessor
• EnergyFluxIntegralComputes the integral of the energy flux over a boundary
• FunctionElementIntegralRZIntegrates a function over elements for RZ geometry modeled by XY domain
• FunctionSideIntegralRZIntegrates a function over sides for RZ geometry modeled by XY domain
• HeatRateConductionRZIntegrates a conduction heat flux over an RZ boundary.
• HeatRateConvectionIntegrates a convective heat flux over a boundary.
• HeatRateConvection1PhaseComputes convective heat rate into a 1-phase flow channel
• HeatRateConvectionRZIntegrates a cylindrical heat structure boundary convective heat flux
• HeatRateDirectFlowChannelComputes the heat rate into a flow channel from heat flux material property
• HeatRateExternalAppConvectionRZIntegrates a cylindrical heat structure boundary convective heat flux from an external application
• HeatRateHeatFluxIntegrates a heat flux function over a boundary
• HeatRateHeatFluxRZIntegrates a heat flux function over a cylindrical boundary in a XYZ coordinate system.
• HeatRateRadiationIntegrates a radiative heat flux over a boundary.
• HeatRateRadiationRZIntegrates a cylindrical heat structure boundary radiative heat flux
• HeatStructureEnergyComputes the total energy for a plate heat structure.
• HeatStructureEnergy3DComputes the total energy for a 3D heat structure.
• HeatStructureEnergyRZComputes the total energy for a cylindrical heat structure.
• MassFluxIntegralComputes the integral of the mass flux over a boundary
• MomentumFluxIntegralComputes the integral of the momentum flux over a boundary
• NodalEnergyFluxPostprocessorCompute the energy flux from the sum of the nodal energy fluxes
• RealComponentParameterValuePostprocessorPostprocessor for reading a Real (floating point) value from the control logic system.
• RealControlDataValuePostprocessorOutputs the value of a ControlData as a postprocessor
• ShaftConnectedComponentPostprocessorGets torque or moment of inertia for a shaft-connected component.
• ShaftConnectedCompressor1PhasePostprocessorGets various quantities for a ShaftConnectedCompressor1Phase
• SideFluxIntegralRZIntegrates a diffusive flux over a boundary of a 2D RZ domain.
• SpecificImpulse1PhaseEstimates specific impulse from fluid state at a boundary
• SumPostprocessorSums the values of several postprocessors

Problem

• Thermal Hydraulics App
• THMProblemSpecialization of FEProblem to run with component subsystem

ScalarKernels

• Thermal Hydraulics App
• ADShaftComponentTorqueScalarKernelTorque contributed by a component connected to a shaft
• ADShaftTimeDerivativeScalarKernelAdds a time derivative term to the shaft ODE
• ADVolumeJunctionAdvectionScalarKernelAdds advective fluxes for the junction variables for a volume junction
• ODECoefTimeDerivativeTime derivative term multiplied by a coefficient - used by ODEs.
• PostprocessorSourceScalarKernelAdds arbitrary post-processor value as source term
• ShaftComponentTorqueScalarKernelTorque contributed by a component connected to a shaft
• ShaftTimeDerivativeScalarKernelAdds a time derivative term to the shaft ODE

UserObjects

• Thermal Hydraulics App
• ADBoundaryFlux3EqnFreeOutflowComputes the outflow boundary flux directly for the 1-D, 1-phase, variable-area Euler equations
• ADBoundaryFlux3EqnGhostDensityVelocityComputes boundary flux from density and velocity for the 3-equation model using a ghost cell approach.
• ADBoundaryFlux3EqnGhostMassFlowRateTemperatureComputes a boundary flux from a specified mass flow rate and temperature for the 1-D, 1-phase, variable-area Euler equations using a ghost cell
• ADBoundaryFlux3EqnGhostPressureComputes boundary flux from a specified pressure for the 1-D, 1-phase, variable-area Euler equations
• ADBoundaryFlux3EqnGhostStagnationPressureTemperatureComputes boundary flux from a specified stagnation pressure and temperature for the 1-D, 1-phase, variable-area Euler equations
• ADBoundaryFlux3EqnGhostVelocityTemperatureComputes a boundary flux from a specified velocity and temperature for the 1-D, 1-phase, variable-area Euler equations using a ghost cell
• ADBoundaryFlux3EqnGhostWallWall boundary conditions for the 1-D, 1-phase, variable-area Euler equations
• ADGateValve1PhaseUserObjectGate valve user object for 1-phase flow
• ADHeatFluxFromHeatStructure3EqnUserObjectCache the heat flux between a single phase flow channel and a heat structure
• ADHeatTransferFromHeatStructure3D1PhaseUserObjectCaches heat flux information (fluid temperature and heat transfer coefficient) between flow channel and 3D heat structure.
• ADJunctionOneToOne1PhaseUserObjectComputes flux between two subdomains for 1-phase one-to-one junction
• ADJunctionParallelChannels1PhaseUserObjectComputes and caches flux and residual vectors for a 1-phase junction that connects flow channels that are parallel
• ADNumericalFlux3EqnCenteredComputes internal side flux for the 1-D, 1-phase, variable-area Euler equations using a centered average of the left and right side fluxes
• ADNumericalFlux3EqnHLLCComputes internal side flux for the 1-D, 1-phase, variable-area Euler equations using the HLLC approximate Riemann solver.
• ADPump1PhaseUserObjectComputes and caches flux and residual vectors for a 1-phase pump
• ADShaftConnectedCompressor1PhaseUserObjectComputes and caches flux and residual vectors for a 1-phase compressor. Also computes compressor torque and delta_p which is passed to the connected shaft
• ADShaftConnectedMotorUserObjectComputes the torque and moment of inertia of a shaft connected motor
• ADShaftConnectedPump1PhaseUserObjectComputes and caches flux and residual vectors for a 1-phase pump. Also computes pump torque and head which is passed to the connected shaft
• ADShaftConnectedTurbine1PhaseUserObjectComputes and caches flux and residual vectors for a 1-phase turbine. Also computes turbine torque and delta_p which is passed to the connected shaft
• ADSimpleTurbine1PhaseUserObjectComputes and caches flux and residual vectors for a 1-phase turbine
• ADVolumeJunction1PhaseUserObjectComputes and caches flux and residual vectors for a 1-phase volume junction
• FunctionElementLoopIntegralUserObjectComputes the integral of a function using an element loop.
• HSCoupler2D2DRadiationUserObjectComputes heat fluxes for HSCoupler2D2D.
• HSCoupler2D3DUserObjectComputes heat fluxes for HSCoupler2D3D.
• LayeredAverageRZComputes layered averages of variable for RZ components in a XY coordinate system
• LayeredFlowAreaChangeThis layered user object computes the change in cross sectional area of a flow channel from the displacement variables. Note: the convention isthat reduction in flow area is negative. For this to be satisfied, normals mustpoint INTO the flow channel.
• ShaftConnectedMotorUserObjectComputes the torque and moment of inertia of a shaft connected motor
• StoreVariableByElemIDSideUserObjectStores variable values at each quadrature point on a side by element ID.

Variables

VectorPostprocessors

• Thermal Hydraulics App
• ADSampler1DRealSamples material properties at all quadrature points in mesh block(s)
• Sampler1DRealSamples material properties at all quadrature points in mesh block(s)
• Sampler1DVectorSamples a single component of array material properties at all quadrature points in mesh block(s)