ThermalCompositeSiCProperties

Composite silicon carbide thermal properties.

Description

This userobject provides thermal properties for composite silicon carbide as a function of temperature.

All units are given in SI, such that the input temperature is Kelvin, and the output units of the thermal conductivity kk are W/m\cdotK, the output units of the isobaric specific heat capacity CpC_p are J/kg\cdotK, and the output units of the density ρ\rho are kg/m3^3.

Isobaric specific heat is calculated from Snead et al. (2007) as

Cp=925.65+0.3772T7.9259×105T23.1946×107T2;C_p=925.65 + 0.3772 * T - 7.9259\times10^{-5} * T^2 - 3.1946\times 10^7 * T^{-2};

The uncertainty is ±\pm 7% in the range 200 K \le T \le 1000 K and ±\pm 4% in the range 1000 K \le T \le 2400 K.

Thermal conductivity is calculated from Stone et al. (2015) as

k=1.71×1011T4+7.35×108T31.10×104T2+0.061T+7.97k=-1.71\times 10^{-11} T^4+7.35\times 10^{-8}T^3 - 1.10\times 10^{-4}T^2+0.061T+7.97

The density is assumed constant because the thermal expansion coefficient of silicon carbide is very small. A default value is provided as an average over four different crystal structures at room temperature Snead et al. (2007) as

ρ=3216.0\rho=3216.0

Range of Validity

This userobject is valid for estimating isobaric specific heat over 200 K \le T \le 2400 K, and for estimating thermal conductivity over an unspecified range Stone et al. (2015).

Input Parameters

  • T_zero_e273.15Temperature at which the specific internal energy is assumed to be zero [K].

    Default:273.15

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:Temperature at which the specific internal energy is assumed to be zero [K].

  • allow_imperfect_jacobiansFalsetrue to allow unimplemented property derivative terms to be set to zero for the AD API

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:true to allow unimplemented property derivative terms to be set to zero for the AD API

  • density3216(Constant) density

    Default:3216

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:(Constant) density

  • execute_onTIMESTEP_ENDThe list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.

    Default:TIMESTEP_END

    C++ Type:ExecFlagEnum

    Unit:(no unit assumed)

    Options:NONE, INITIAL, LINEAR, NONLINEAR_CONVERGENCE, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM

    Controllable:No

    Description:The list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.

  • prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.

    C++ Type:MaterialPropertyName

    Unit:(no unit assumed)

    Controllable:No

    Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.

  • use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.

Optional Parameters

  • allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

  • control_tagsAdds user-defined labels for accessing object parameters via control logic.

    C++ Type:std::vector<std::string>

    Unit:(no unit assumed)

    Controllable:No

    Description:Adds user-defined labels for accessing object parameters via control logic.

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:Yes

    Description:Set the enabled status of the MooseObject.

  • execution_order_group0Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.

    Default:0

    C++ Type:int

    Unit:(no unit assumed)

    Controllable:No

    Description:Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.

  • force_postauxFalseForces the UserObject to be executed in POSTAUX

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Forces the UserObject to be executed in POSTAUX

  • force_preauxFalseForces the UserObject to be executed in PREAUX

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Forces the UserObject to be executed in PREAUX

  • force_preicFalseForces the UserObject to be executed in PREIC during initial setup

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Forces the UserObject to be executed in PREIC during initial setup

  • use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

Advanced Parameters

References

  1. L. L. Snead, T. Nozawa, Y. Katoh, T. Byun, S. Kondo, and D. A. Petti. Handbook of SiC Properties for Fuel Performance Modeling. Journal of Nuclear Materials, 371:329–377, 2007.[BibTeX]
  2. J. G. Stone, R. Schleicher, C. P. Deck, G. M .Jacobsen, H. E. Khalifa, and C. A. Back. Stress Analysis and Probabilistic Assessment of Multi-Layer SiC-Based Accident Tolerant Nuclear Fuel Cladding. Journal of Nuclear Materials, 466:682–697, 2015.[BibTeX]