This class couples together all the variables for the compressible Navier-Stokes equations to allow them to be used in derived Kernel classes. More...

#include <NSKernel.h>

Inheritance diagram for NSKernel:

[legend]

Public Member Functions
	NSKernel (const InputParameters &parameters)

Protected Member Functions
bool	isNSVariable (unsigned var)
	Helper functions for mapping Moose variable numberings into the "canonical" numbering for the compressible NS equations. More...

unsigned	mapVarNumber (unsigned var)

Protected Attributes
const VariableValue &	_u_vel

const VariableValue &	_v_vel

const VariableValue &	_w_vel

const VariableValue &	_rho

const VariableValue &	_rho_u

const VariableValue &	_rho_v

const VariableValue &	_rho_w

const VariableValue &	_rho_E

const VariableGradient &	_grad_rho

const VariableGradient &	_grad_rho_u

const VariableGradient &	_grad_rho_v

const VariableGradient &	_grad_rho_w

const VariableGradient &	_grad_rho_E

unsigned	_rho_var_number

unsigned	_rhou_var_number

unsigned	_rhov_var_number

unsigned	_rhow_var_number

unsigned	_rhoE_var_number

const MaterialProperty< Real > &	_dynamic_viscosity

const MaterialProperty< RealTensorValue > &	_viscous_stress_tensor

const IdealGasFluidProperties &	_fp

Detailed Description

This class couples together all the variables for the compressible Navier-Stokes equations to allow them to be used in derived Kernel classes.

This prevents duplication of lines of code between e.g. the momentum and energy equations, since they have a lot in common.

Definition at line 29 of file NSKernel.h.

Constructor & Destructor Documentation

◆ NSKernel()

NSKernel::NSKernel ( const InputParameters & parameters )

Definition at line 41 of file NSKernel.C.

   : Kernel(parameters),
     // Coupled variables
     _u_vel(coupledValue(NS::velocity_x)),
     _v_vel(_mesh.dimension() >= 2 ? coupledValue(NS::velocity_y) : _zero),
     _w_vel(_mesh.dimension() == 3 ? coupledValue(NS::velocity_z) : _zero),
  
     _rho(coupledValue(NS::density)),
     _rho_u(coupledValue(NS::momentum_x)),
     _rho_v(_mesh.dimension() >= 2 ? coupledValue(NS::momentum_y) : _zero),
     _rho_w(_mesh.dimension() == 3 ? coupledValue(NS::momentum_z) : _zero),
     _rho_E(coupledValue(NS::total_energy)),
  
     // Gradients
     _grad_rho(coupledGradient(NS::density)),
     _grad_rho_u(coupledGradient(NS::momentum_x)),
     _grad_rho_v(_mesh.dimension() >= 2 ? coupledGradient(NS::momentum_y) : _grad_zero),
     _grad_rho_w(_mesh.dimension() == 3 ? coupledGradient(NS::momentum_z) : _grad_zero),
     _grad_rho_E(coupledGradient(NS::total_energy)),
  
     // Variable numberings
     _rho_var_number(coupled(NS::density)),
     _rhou_var_number(coupled(NS::momentum_x)),
     _rhov_var_number(_mesh.dimension() >= 2 ? coupled(NS::momentum_y) : libMesh::invalid_uint),
     _rhow_var_number(_mesh.dimension() == 3 ? coupled(NS::momentum_z) : libMesh::invalid_uint),
     _rhoE_var_number(coupled(NS::total_energy)),
  
     // Material properties
     _dynamic_viscosity(getMaterialProperty<Real>("dynamic_viscosity")),
     _viscous_stress_tensor(getMaterialProperty<RealTensorValue>("viscous_stress_tensor")),
  
     // FluidProperties UserObject
     _fp(getUserObject<IdealGasFluidProperties>("fluid_properties"))
 {
 }

Member Function Documentation

◆ isNSVariable()

bool NSKernel::isNSVariable ( unsigned var )

protected

Helper functions for mapping Moose variable numberings into the "canonical" numbering for the compressible NS equations.

Definition at line 78 of file NSKernel.C.

 {
   if (var == _rho_var_number || var == _rhou_var_number || var == _rhov_var_number ||
       var == _rhow_var_number || var == _rhoE_var_number)
     return true;
   else
     return false;
 }

Referenced by NSSUPGEnergy::computeJacobianHelper(), NSSUPGMass::computeJacobianHelper(), NSSUPGMomentum::computeJacobianHelper(), NSMassInviscidFlux::computeQpOffDiagJacobian(), NSEnergyInviscidFlux::computeQpOffDiagJacobian(), NSMomentumInviscidFluxWithGradP::computeQpOffDiagJacobian(), NSMomentumInviscidFlux::computeQpOffDiagJacobian(), NSEnergyViscousFlux::computeQpOffDiagJacobian(), NSMomentumViscousFlux::computeQpOffDiagJacobian(), and NSEnergyThermalFlux::computeQpOffDiagJacobian().

◆ mapVarNumber()

unsigned NSKernel::mapVarNumber ( unsigned var )

protected

Definition at line 88 of file NSKernel.C.

 {
   // Convert the Moose numbering to:
   // 0 for rho
   // 1 for rho*u
   // 2 for rho*v
   // 3 for rho*w
   // 4 for rho*e
   // regardless of the problem dimension, etc.
   unsigned mapped_var_number = 99;
  
   if (var == _rho_var_number)
     mapped_var_number = 0;
   else if (var == _rhou_var_number)
     mapped_var_number = 1;
   else if (var == _rhov_var_number)
     mapped_var_number = 2;
   else if (var == _rhow_var_number)
     mapped_var_number = 3;
   else if (var == _rhoE_var_number)
     mapped_var_number = 4;
   else
     mooseError("Invalid var!");
  
   return mapped_var_number;
 }