XSph Class Reference

XSPH correction that (partially) averages the velocities over neighbouring particles. More...

#include <XSph.h>

Inheritance diagram for XSph:

Public Member Functions
virtual void	setDerivatives (DerivativeHolder &derivatives, const RunSettings &settings) override
	Sets derivatives required by this term. More...
virtual void	initialize (IScheduler &UNUSED(scheduler), Storage &storage, const Float UNUSED(t)) override
virtual void	finalize (IScheduler &UNUSED(scheduler), Storage &storage, const Float UNUSED(t)) override
virtual void	create (Storage &storage, IMaterial &UNUSED(material)) const override
Public Member Functions inherited from IEquationTerm
virtual void	initialize (IScheduler &scheduler, Storage &storage, const Float t)=0
	Initialize all the derivatives and/or quantity values before derivatives are computed. More...
virtual void	finalize (IScheduler &scheduler, Storage &storage, const Float t)=0
	Computes all the derivatives and/or quantity values based on accumulated derivatives. More...
virtual void	create (Storage &storage, IMaterial &material) const =0
	Creates all quantities needed by the term using given material. More...
Public Member Functions inherited from Polymorphic
virtual	~Polymorphic ()

Detailed Description

XSPH correction that (partially) averages the velocities over neighbouring particles.

This keeps particles ordered in absence of viscosity. See Monaghan 1992 (Annu. Rev. Astron. Astrophys. 1992.30:543-74)

Todo:

This implementation is currently not consistent ContinuitySolver; different velocities should also affect the continuity equations (density derivative). For self-consistent solutions, use XSPH corrected velocities in continuity equation or use direct summation of density.

Definition at line 23 of file XSph.h.

Member Function Documentation

create()

virtual void XSph::create ( Storage &  storage, IMaterial &  UNUSEDmaterial  ) const

inlineoverridevirtual

Definition at line 94 of file XSph.h.

finalize()

virtual void XSph::finalize ( IScheduler &  UNUSEDscheduler, Storage &  storage, const Float   UNUSEDt  )

inlineoverridevirtual

Definition at line 86 of file XSph.h.

initialize()

virtual void XSph::initialize ( IScheduler &  UNUSEDscheduler, Storage &  storage, const Float   UNUSEDt  )

inlineoverridevirtual

Todo:

this is not very good solution as it depends on ordering of equation term in the array; some may already get corrected velocities. This should be really done by deriving the solver and correcting velocities manually.

Definition at line 74 of file XSph.h.

setDerivatives()

virtual void XSph::setDerivatives ( DerivativeHolder &  derivatives, const RunSettings &  settings  )

inlineoverridevirtual

Sets derivatives required by this term.

The derivatives are then automatically evaluated by the solver, the equation term can access the result in finalize function. This function is called once for each thread at the beginning of the run.

Implements IEquationTerm.

Definition at line 70 of file XSph.h.

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

• /home/pavel/projects/astro/sph/src/core/sph/equations/XSph.h