NekHeatFluxIntegral Class Reference

#include <NekHeatFluxIntegral.h>

Inheritance diagram for NekHeatFluxIntegral:

Public Member Functions
	NekHeatFluxIntegral (const InputParameters &parameters)
virtual Real	getValue () const override
virtual void	initialize () override
virtual void	execute () override

Static Public Member Functions
static InputParameters	validParams ()

Protected Attributes
const nek_mesh::NekMeshEnum	_pp_mesh
	Which NekRS mesh to act on.
const std::vector< int > &	_boundary
	boundary IDs of the nekRS mesh over which to find the extreme value
const NekRSProblemBase *	_nek_problem
	The NekRSProblemBase required by all objects which inherit from NekBase.
const NekRSMesh *	_nek_mesh
	Underlying NekRSMesh, if present.

Detailed Description

Compute the integral of the heat flux over a boundary in the nekRS mesh, \(\int_\Gamma -k\nabla T\cdot\hat{n} d\Gamma\), where \(T\) is the temperature, \(k\) is the thermal conductivity, \(\hat{n}\) is the unit normal, and \(\Gamma\) is the boundary.

Note that this calculation is done directly on the mesh that nekRS solves on, not the mesh created for solution transfer in NekRSMesh.

This heat flux calculation directly integrates the heat flux in nekRS - we therefore do not expect this value to match the imposed heat flux at the start of the nekRS time step (i.e. that we interpolated) because those heat fluxes are separated in time.

Also very important to note is that the heat flux measured on a boundary that has GLL points also on a Dirichlet boundary will never match the requested imposed heat flux because Dirichlet boundary conditions win (note that this is slightly different from 'Neumann BCs are only weakly imposed').

Constructor & Destructor Documentation

NekHeatFluxIntegral()

NekHeatFluxIntegral::NekHeatFluxIntegral

(

const InputParameters &

parameters

)

Member Function Documentation

execute()

virtual void NekSidePostprocessor::execute ( )

inlineoverridevirtualinherited

getValue()

virtual Real NekHeatFluxIntegral::getValue ( ) const

overridevirtual

initialize()

virtual void NekSidePostprocessor::initialize ( )

inlineoverridevirtualinherited

validParams()

static InputParameters NekHeatFluxIntegral::validParams ( )

static

Member Data Documentation

_boundary

const std::vector<int>& NekSidePostprocessor::_boundary

protectedinherited

boundary IDs of the nekRS mesh over which to find the extreme value

_nek_mesh

const NekRSMesh* NekBase::_nek_mesh

protectedinherited

Underlying NekRSMesh, if present.

_nek_problem

const NekRSProblemBase* NekBase::_nek_problem

protectedinherited

The NekRSProblemBase required by all objects which inherit from NekBase.

_pp_mesh

const nek_mesh::NekMeshEnum NekSidePostprocessor::_pp_mesh

protectedinherited

Which NekRS mesh to act on.

---

The documentation for this class was generated from the following file:

• include/postprocessors/NekHeatFluxIntegral.h