MovingPlanarFront Class Reference

Defines the position of a moving front. More...

#include <MovingPlanarFront.h>

Inheritance diagram for MovingPlanarFront:

Public Member Functions
	MovingPlanarFront (const InputParameters &parameters)
virtual Real	value (Real t, const Point &p) const override

Protected Attributes
const RealVectorValue	_start_posn
	Initial position of front. More...
const RealVectorValue	_end_posn
	Final position of the front: together with start_posn this defines the front's normal. More...
const Function &	_distance
	The front's distance from start_posn (along the normal direction) More...
const Real	_active_length
	Active length. More...
const Real	_true_value
	True value to return. More...
const Real	_false_value
	False value to return. More...
const Real	_activation_time
	Activation time. More...
const Real	_deactivation_time
	Deactivation time. More...
RealVectorValue	_front_normal
	Front unit normal. More...

Detailed Description

Defines the position of a moving front.

The front is an infinite plane with normal pointing from start_posn to end_posn. The front's distance from start_posn is defined by the 'distance' function

This Function may be used to define the geometry of an underground excavation, probably in conjunction with a predefined sideset.

Definition at line 28 of file MovingPlanarFront.h.

Constructor & Destructor Documentation

MovingPlanarFront()

MovingPlanarFront::MovingPlanarFront

(

const InputParameters &

parameters

)

Definition at line 57 of file MovingPlanarFront.C.

  : Function(parameters),
    FunctionInterface(this),
    _start_posn(getParam<RealVectorValue>("start_posn")),
    _end_posn(getParam<RealVectorValue>("end_posn")),
    _distance(getFunction("distance")),
    _active_length(getParam<Real>("active_length")),
    _true_value(getParam<Real>("true_value")),
    _false_value(getParam<Real>("false_value")),
    _activation_time(getParam<Real>("activation_time")),
    _deactivation_time(getParam<Real>("deactivation_time")),
    _front_normal(_end_posn - _start_posn)
{
  if (_front_normal.norm() == 0)
    mooseError("MovingPlanarFront: start_posn and end_posn must be different points");
  _front_normal /= _front_normal.norm();
}

Member Function Documentation

value()

Real MovingPlanarFront::value ( Real  t, const Point &  p  ) const

overridevirtual

Definition at line 76 of file MovingPlanarFront.C.

{
  if (t < _activation_time)
    return _false_value;
 
  if (t >= _deactivation_time)
    return _false_value;
 
  if ((p - _start_posn) * _front_normal < 0)
    // point is behind start posn - it'll never be active
    return _false_value;
 
  const RealVectorValue current_posn = _start_posn + _distance.value(t, p) * _front_normal;
 
  const Real distance_ahead_of_front = (p - current_posn) * _front_normal;
 
  if (distance_ahead_of_front > 0)
    return _false_value;
 
  if (distance_ahead_of_front < -_active_length)
    // point is too far behind front
    return _false_value;
 
  return _true_value;
}

Member Data Documentation

_activation_time

const Real MovingPlanarFront::_activation_time

protected

Activation time.

Definition at line 55 of file MovingPlanarFront.h.

Referenced by value().

_active_length

const Real MovingPlanarFront::_active_length

protected

Active length.

Definition at line 46 of file MovingPlanarFront.h.

Referenced by value().

_deactivation_time

const Real MovingPlanarFront::_deactivation_time

protected

Deactivation time.

Definition at line 58 of file MovingPlanarFront.h.

Referenced by value().

_distance

const Function& MovingPlanarFront::_distance

protected

The front's distance from start_posn (along the normal direction)

Definition at line 43 of file MovingPlanarFront.h.

Referenced by value().

_end_posn

const RealVectorValue MovingPlanarFront::_end_posn

protected

Final position of the front: together with start_posn this defines the front's normal.

Definition at line 40 of file MovingPlanarFront.h.

_false_value

const Real MovingPlanarFront::_false_value

protected

False value to return.

Definition at line 52 of file MovingPlanarFront.h.

Referenced by value().

_front_normal

RealVectorValue MovingPlanarFront::_front_normal

protected

Front unit normal.

Definition at line 61 of file MovingPlanarFront.h.

Referenced by MovingPlanarFront(), and value().

_start_posn

const RealVectorValue MovingPlanarFront::_start_posn

protected

Initial position of front.

Definition at line 37 of file MovingPlanarFront.h.

Referenced by value().

_true_value

const Real MovingPlanarFront::_true_value

protected

True value to return.

Definition at line 49 of file MovingPlanarFront.h.

Referenced by value().

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

• porous_flow/include/functions/MovingPlanarFront.h
• porous_flow/src/functions/MovingPlanarFront.C