VacuumConcBC Class Reference

#include <VacuumConcBC.h>

Inheritance diagram for VacuumConcBC:

Public Member Functions
	VacuumConcBC (const InputParameters &parameters)
Public Member Functions inherited from ScalarTransportBase
	ScalarTransportBase (const InputParameters &parameters)
virtual Real	computeConcentration (const VariableValue &u, unsigned int qp)
	Computes \(c\).
virtual RealVectorValue	computeConcentrationGradient (const VariableValue &u, const VariableGradient &grad_u, unsigned int qp)
	Computes \(\nabla c\).
virtual Real	computeConcentrationDerivative (const VariableValue &u, const VariablePhiValue &phi, unsigned int j, unsigned int qp)
	Computes \(\frac{\partial c}{\partial u_j}\).
virtual RealVectorValue	computeConcentrationGradientDerivative (const VariableValue &u, const VariableGradient &grad_u, const VariablePhiValue &phi, const VariablePhiGradient &grad_phi, unsigned int j, unsigned int qp)
	Computes \(\nabla \frac{\partial c}{\partial u_j}\).
virtual Real	computeConcentrationDot (const VariableValue &u, const VariableValue &u_dot, unsigned int qp)
	Computes \(\frac{\partial c}{\partial t}\).
virtual Real	computeConcentrationDotDerivative (const VariableValue &u, const VariableValue &u_dot, const VariableValue &du_dot_du, const VariablePhiValue &phi, unsigned int j, unsigned int qp)
	Computes \(\frac{\partial}{\partial t} \frac{\partial c}{\partial u_j}\).

Static Public Member Functions
static InputParameters	validParams ()
Static Public Member Functions inherited from ScalarTransportBase
static InputParameters	validParams ()

Protected Member Functions
virtual Real	computeQpResidual () override
virtual Real	computeQpJacobian () override

Protected Attributes
Real	_alpha
	Ratio of u to du/dn.

Detailed Description

Implements a simple VacuumConc BC for neutron diffusion on the boundary. VacuumConc BC is defined as \( D\frac{du}{dn}+\frac{u}{2} = 0\), where u is neutron flux. Hence, \( D\frac{du}{dn}=-\frac{u}{2} \) and \( -\frac{u}{2} \) is substituted into the Neumann BC term produced from integrating the diffusion operator by parts.

Constructor & Destructor Documentation

VacuumConcBC()

VacuumConcBC::VacuumConcBC

(

const InputParameters &

parameters

)

Factory constructor, takes parameters so that all derived classes can be built using the same constructor.

Member Function Documentation

computeQpJacobian()

Real VacuumConcBC::computeQpJacobian ( )

overrideprotectedvirtual

computeQpResidual()

Real VacuumConcBC::computeQpResidual ( )

overrideprotectedvirtual

validParams()

InputParameters VacuumConcBC::validParams ( )

static

Member Data Documentation

_alpha

Real VacuumConcBC::_alpha

protected

Ratio of u to du/dn.

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

• include/bcs/VacuumConcBC.h
• src/bcs/VacuumConcBC.C