NekTimeStepper Class Reference

Time stepper that reads time step information directly from nekRS. More...

#include <NekTimeStepper.h>

Inheritance diagram for NekTimeStepper:

Public Member Functions
	NekTimeStepper (const InputParameters &parameters)
virtual Real	minDT () const
virtual void	setReferenceTime (const Real &L, const Real &U)
virtual Real	nondimensionalDT (const Real &dimensional_dt) const

Static Public Member Functions
static InputParameters	validParams ()

Protected Member Functions
virtual Real	computeInitialDT () override
virtual Real	computeDT () override

Protected Attributes
Real	_min_dt
	Minimum allowable time step (dimensional) that MOOSE can set in NekRS. More...
Real	_nek_dt
Real	_t_ref
	Reference time scale. More...

Detailed Description

Time stepper that reads time step information directly from nekRS.

This time stepper performs the very simple action of reading stepping information from nekRS. This is necessary for the correct simulation time and time step size to be reflected through the Moose App running nekRS. This class will ignore any constantDT-type time stepping parameters set directly within the [Executioner] block, instead reading all stepping information (start time, end time, number of time steps, and time step size) directly from nekRS data structures. The only situation for which some control can be exerted from the MOOSE side is if Nek is run as a sub-application, in which case the simulation end time is controlled from the master application.

Constructor & Destructor Documentation

NekTimeStepper()

NekTimeStepper::NekTimeStepper

(

const InputParameters &

parameters

)

Member Function Documentation

computeDT()

virtual Real NekTimeStepper::computeDT ( )

overrideprotectedvirtual

computeInitialDT()

virtual Real NekTimeStepper::computeInitialDT ( )

overrideprotectedvirtual

minDT()

virtual Real NekTimeStepper::minDT ( ) const

virtual

nondimensionalDT()

virtual Real NekTimeStepper::nondimensionalDT ( const Real &  dimensional_dt ) const

virtual

Compute the nondimensional version of a dt

Parameters

[in]

dimensional_dt

time step in dimensional form

Returns

non-dimensional version of time step

setReferenceTime()

virtual void NekTimeStepper::setReferenceTime ( const Real &  L, const Real &  U  )

virtual

Set the reference time scale that nekRS's nondimensional form is based on

Parameters

[in]	L	characteristic length
[in]	U	characteristic velocity

validParams()

static InputParameters NekTimeStepper::validParams ( )

static

Member Data Documentation

_min_dt

Real NekTimeStepper::_min_dt

protected

Minimum allowable time step (dimensional) that MOOSE can set in NekRS.

_nek_dt

Real NekTimeStepper::_nek_dt

protected

The initial time step size in NekRS, in non-dimensional form. This does not reflect the time step as it changes adaptively.

_t_ref

Real NekTimeStepper::_t_ref

protected

Reference time scale.

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

• include/timesteppers/NekTimeStepper.h