DistributedPower Class Reference

The DistributedPower kernel computes the kinetic energy contribution of the body force due to total energy in an element. More...

#include <DistributedPower.h>

Inheritance diagram for DistributedPower:

Public Member Functions
	DistributedPower (const InputParameters &parameters)

Protected Member Functions
virtual Real	computeQpResidual ()
virtual Real	computeQpJacobian ()
virtual Real	computeQpOffDiagJacobian (unsigned int jvar)

Protected Attributes
RealVectorValue	_acceleration
unsigned int	_rhou_var_number
unsigned int	_rhov_var_number
unsigned int	_rhow_var_number
const VariableValue &	_rho_u
const VariableValue &	_rho_v
const VariableValue &	_rho_w

Detailed Description

The DistributedPower kernel computes the kinetic energy contribution of the body force due to total energy in an element.

In this kernel, the acceleration of the body force is assumed to be a constant defined by up to three dimensional components as input. This kinetic energy component is the acceleration vector dotted into the momentum vector components, yielding a scalar kinetic contribution.

Definition at line 26 of file DistributedPower.h.

Constructor & Destructor Documentation

DistributedPower()

DistributedPower::DistributedPower

(

const InputParameters &

parameters

)

Definition at line 34 of file DistributedPower.C.

  : Kernel(parameters),
    // acceleration vector
    _acceleration(getParam<RealVectorValue>("acceleration")),
 
    // momentum components
    _rhou_var_number(coupled("rho_u")),
    _rhov_var_number(isCoupled("rho_v") ? coupled("rho_v") : libMesh::invalid_uint),
    _rhow_var_number(isCoupled("rho_w") ? coupled("rho_w") : libMesh::invalid_uint),
    _rho_u(coupledValue("rho_u")),
    _rho_v(isCoupled("rho_v") ? coupledValue("rho_v") : _zero),
    _rho_w(isCoupled("rho_w") ? coupledValue("rho_w") : _zero)
{
}

Member Function Documentation

computeQpJacobian()

Real DistributedPower::computeQpJacobian ( )

protectedvirtual

Definition at line 58 of file DistributedPower.C.

{
  return 0.;
}

computeQpOffDiagJacobian()

Real DistributedPower::computeQpOffDiagJacobian ( unsigned int  jvar )

protectedvirtual

Definition at line 64 of file DistributedPower.C.

{
  if (jvar == _rhou_var_number)
    return -_phi[_j][_qp] * _acceleration(0) * _test[_i][_qp];
  if (jvar == _rhov_var_number)
    return -_phi[_j][_qp] * _acceleration(1) * _test[_i][_qp];
  if (jvar == _rhow_var_number)
    return -_phi[_j][_qp] * _acceleration(2) * _test[_i][_qp];
 
  return 0;
}

computeQpResidual()

Real DistributedPower::computeQpResidual ( )

protectedvirtual

Definition at line 50 of file DistributedPower.C.

{
  RealVectorValue rhou_vec(_rho_u[_qp], _rho_v[_qp], _rho_w[_qp]);
  // -rhou dot acceleration
  return -rhou_vec * _acceleration * _test[_i][_qp];
}

Member Data Documentation

_acceleration

RealVectorValue DistributedPower::_acceleration

protected

Definition at line 36 of file DistributedPower.h.

Referenced by computeQpOffDiagJacobian(), and computeQpResidual().

_rho_u

const VariableValue& DistributedPower::_rho_u

protected

Definition at line 40 of file DistributedPower.h.

Referenced by computeQpResidual().

_rho_v

const VariableValue& DistributedPower::_rho_v

protected

Definition at line 41 of file DistributedPower.h.

Referenced by computeQpResidual().

_rho_w

const VariableValue& DistributedPower::_rho_w

protected

Definition at line 42 of file DistributedPower.h.

Referenced by computeQpResidual().

_rhou_var_number

unsigned int DistributedPower::_rhou_var_number

protected

Definition at line 37 of file DistributedPower.h.

Referenced by computeQpOffDiagJacobian().

_rhov_var_number

unsigned int DistributedPower::_rhov_var_number

protected

Definition at line 38 of file DistributedPower.h.

Referenced by computeQpOffDiagJacobian().

_rhow_var_number

unsigned int DistributedPower::_rhow_var_number

protected

Definition at line 39 of file DistributedPower.h.

Referenced by computeQpOffDiagJacobian().

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

• navier_stokes/include/kernels/DistributedPower.h
• navier_stokes/src/kernels/DistributedPower.C