CubbyFlow::MPMFluidConstitutiveModel< N > Class Template Reference

Weakly compressible fluid constitutive model for MPM. More...

#include <Core/Particle/MPM/MPMFluidConstitutiveModel.hpp>

Public Types
using	MatrixType = Matrix< double, N, N >

Public Member Functions
	MPMFluidConstitutiveModel (double targetDensity=WATER_DENSITY, double speedOfSound=100.0, double eosExponent=7.0, double negativePressureScale=0.0)
	Constructs a weakly compressible MPM fluid model.
double	GetTargetDensity () const
	Returns the target density.
double	GetSpeedOfSound () const
	Returns the speed of sound.
double	GetEosExponent () const
	Returns the equation-of-state exponent.
double	GetNegativePressureScale () const
	Returns the negative-pressure scale.
double	ComputeDensity (double mass, double currentVolume) const
	Computes density from particle mass and current volume.
double	ComputePressure (double density) const
	Computes equation-of-state pressure for a density.
MatrixType	ComputeCauchyStress (double pressure) const
	Converts pressure to the isotropic Cauchy stress -p I.

Detailed Description

template<size_t N>
class CubbyFlow::MPMFluidConstitutiveModel< N >

Weakly compressible fluid constitutive model for MPM.

Computes particle density, Murnaghan-Tait equation-of-state pressure, and the corresponding isotropic Cauchy stress in 2-D or 3-D.

Member Typedef Documentation

MatrixType

template<size_t N>

using CubbyFlow::MPMFluidConstitutiveModel< N >::MatrixType = Matrix<double, N, N>

Constructor & Destructor Documentation

MPMFluidConstitutiveModel()

template<size_t N>

CubbyFlow::MPMFluidConstitutiveModel< N >::MPMFluidConstitutiveModel ( double  targetDensity = WATER_DENSITY, double  speedOfSound = 100.0, double  eosExponent = 7.0, double  negativePressureScale = 0.0  )

explicit

Constructs a weakly compressible MPM fluid model.

Parameters

[in]	targetDensity	Positive rest density.
[in]	speedOfSound	Positive artificial speed of sound.
[in]	eosExponent	Equation-of-state exponent, at least one.
[in]	negativePressureScale	Expansion-pressure scale in [0, 1].

Exceptions

std::invalid_argument

If a parameter or the resulting equation-of-state scale is invalid.

Member Function Documentation

ComputeCauchyStress()

template<size_t N>

MPMFluidConstitutiveModel< N >::MatrixType CubbyFlow::MPMFluidConstitutiveModel< N >::ComputeCauchyStress

(

double

pressure

)

const

Converts pressure to the isotropic Cauchy stress -p I.

Exceptions

std::invalid_argument

If the pressure is not finite.

ComputeDensity()

template<size_t N>

double CubbyFlow::MPMFluidConstitutiveModel< N >::ComputeDensity	(	double	mass,
		double	currentVolume
	)		const

Computes density from particle mass and current volume.

Exceptions

std::invalid_argument

If either input or the resulting density is not finite and positive.

ComputePressure()

template<size_t N>

double CubbyFlow::MPMFluidConstitutiveModel< N >::ComputePressure

(

double

density

)

const

Computes equation-of-state pressure for a density.

Exceptions

std::invalid_argument

If the density is not finite and positive or the resulting pressure is not finite.

GetEosExponent()

template<size_t N>

double CubbyFlow::MPMFluidConstitutiveModel< N >::GetEosExponent

(

)

const

Returns the equation-of-state exponent.

GetNegativePressureScale()

template<size_t N>

double CubbyFlow::MPMFluidConstitutiveModel< N >::GetNegativePressureScale

(

)

const

Returns the negative-pressure scale.

GetSpeedOfSound()

template<size_t N>

double CubbyFlow::MPMFluidConstitutiveModel< N >::GetSpeedOfSound

(

)

const

Returns the speed of sound.

GetTargetDensity()

template<size_t N>

double CubbyFlow::MPMFluidConstitutiveModel< N >::GetTargetDensity

(

)

const

Returns the target density.

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

• Core/Particle/MPM/MPMFluidConstitutiveModel.hpp
• Core/Particle/MPM/MPMFluidConstitutiveModel-Impl.hpp