NSInitialCondition Class Reference

NSInitialCondition sets intial constant values for all variables given the: .) Initial pressure .) Initial temperature .) Initial velocity and a FluidProperties UserObject. More...

#include <NSInitialCondition.h>

Inheritance diagram for NSInitialCondition:

Public Member Functions
	NSInitialCondition (const InputParameters &parameters)
virtual Real	value (const Point &p)
	The value of the variable at a point. More...

Protected Attributes
Real	_initial_pressure
Real	_initial_temperature
RealVectorValue	_initial_velocity
const IdealGasFluidProperties &	_fp

Detailed Description

NSInitialCondition sets intial constant values for all variables given the: .) Initial pressure .) Initial temperature .) Initial velocity and a FluidProperties UserObject.

Definition at line 30 of file NSInitialCondition.h.

Constructor & Destructor Documentation

NSInitialCondition()

NSInitialCondition::NSInitialCondition

(

const InputParameters &

parameters

)

Definition at line 40 of file NSInitialCondition.C.

  : InitialCondition(parameters),
    _initial_pressure(getParam<Real>("initial_pressure")),
    _initial_temperature(getParam<Real>("initial_temperature")),
    _initial_velocity(getParam<RealVectorValue>("initial_velocity")),
    _fp(getUserObject<IdealGasFluidProperties>("fluid_properties"))
{
}

Member Function Documentation

value()

Real NSInitialCondition::value ( const Point &  p )

virtual

The value of the variable at a point.

Definition at line 50 of file NSInitialCondition.C.

{
  const Real rho_initial = _fp.rho_from_p_T(_initial_pressure, _initial_temperature);
 
  // TODO: The internal energy could be computed by the IdealGasFluidProperties.
  const Real e_initial = _fp.cv() * _initial_temperature;
  const Real E_initial = e_initial + 0.5 * _initial_velocity.norm_sq();
  const Real v_initial = 1. / rho_initial;
 
  if (_var.name() == NS::enthalpy)
    return E_initial + _initial_pressure / rho_initial;
 
  if (_var.name() == NS::internal_energy)
    return e_initial;
 
  if (_var.name() == NS::mach_number)
    return _initial_velocity.norm() / _fp.c_from_v_e(v_initial, e_initial);
 
  if (_var.name() == NS::pressure)
    return _initial_pressure;
 
  if (_var.name() == NS::density)
    return rho_initial;
 
  if (_var.name() == NS::momentum_x)
    return rho_initial * _initial_velocity(0);
 
  if (_var.name() == NS::momentum_y)
    return rho_initial * _initial_velocity(1);
 
  if (_var.name() == NS::momentum_z)
    return rho_initial * _initial_velocity(2);
 
  if (_var.name() == NS::total_energy)
    return rho_initial * E_initial;
 
  if (_var.name() == NS::specific_volume)
    return v_initial;
 
  if (_var.name() == NS::temperature)
    return _initial_temperature;
 
  if (_var.name() == NS::velocity_x)
    return _initial_velocity(0);
 
  if (_var.name() == NS::velocity_y)
    return _initial_velocity(1);
 
  if (_var.name() == NS::velocity_z)
    return _initial_velocity(2);
 
  // If we got here, then the variable name was not one of the ones we know about.
  mooseError("Unrecognized variable: ", _var.name());
  return 0.;
}

Member Data Documentation

_fp

const IdealGasFluidProperties& NSInitialCondition::_fp

protected

Definition at line 46 of file NSInitialCondition.h.

Referenced by value().

_initial_pressure

Real NSInitialCondition::_initial_pressure

protected

Definition at line 41 of file NSInitialCondition.h.

Referenced by value().

_initial_temperature

Real NSInitialCondition::_initial_temperature

protected

Definition at line 42 of file NSInitialCondition.h.

Referenced by value().

_initial_velocity

RealVectorValue NSInitialCondition::_initial_velocity

protected

Definition at line 43 of file NSInitialCondition.h.

Referenced by value().

---

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

• navier_stokes/include/ics/NSInitialCondition.h
• navier_stokes/src/ics/NSInitialCondition.C