PresetVelocity Class Reference

#include <PresetVelocity.h>

Inheritance diagram for PresetVelocity:

Public Member Functions
	PresetVelocity (const InputParameters &parameters)

Static Public Member Functions
static InputParameters	validParams ()

Protected Member Functions
virtual Real	computeQpValue ()

Protected Attributes
const VariableValue &	_u_old
const Real	_velocity
const Function &	_function

Detailed Description

Definition at line 14 of file PresetVelocity.h.

Constructor & Destructor Documentation

PresetVelocity()

PresetVelocity::PresetVelocity

(

const InputParameters &

parameters

)

Definition at line 33 of file PresetVelocity.C.

  : DirichletBCBase(parameters),
    _u_old(valueOld()),
    _velocity(parameters.get<Real>("velocity")),
    _function(getFunction("function"))
{
}

Member Function Documentation

computeQpValue()

Real PresetVelocity::computeQpValue ( )

protectedvirtual

Definition at line 42 of file PresetVelocity.C.

{
  Real v2 = _function.value(_t, *_current_node);
  Real v1 = _function.value(_t - _dt, *_current_node);
  Real vel = _velocity * 0.5 * (v1 + v2);
 
  return _u_old[_qp] + _dt * vel;
}

validParams()

InputParameters PresetVelocity::validParams ( )

static

Definition at line 18 of file PresetVelocity.C.

{
  InputParameters params = DirichletBCBase::validParams();
 
  params.addParam<Real>(
      "velocity", 1, "Value of the velocity.  Used as scale factor if function is given.");
  params.addParam<FunctionName>("function", "1", "Function describing the velocity.");
 
  // Forcefully preset the BC
  params.set<bool>("preset") = true;
  params.suppressParameter<bool>("preset");
 
  return params;
}

Member Data Documentation

_function

const Function& PresetVelocity::_function

protected

Definition at line 26 of file PresetVelocity.h.

Referenced by computeQpValue().

_u_old

const VariableValue& PresetVelocity::_u_old

protected

Definition at line 24 of file PresetVelocity.h.

Referenced by computeQpValue().

_velocity

const Real PresetVelocity::_velocity

protected

Definition at line 25 of file PresetVelocity.h.

Referenced by computeQpValue().

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

• tensor_mechanics/include/bcs/PresetVelocity.h
• tensor_mechanics/src/bcs/PresetVelocity.C