A GeneralisedNewtonianConstitutiveEquation class defining an arbitrary shear-thinning fluid. More...

#include <generalised_newtonian_constitutive_models.h>

Inheritance diagram for oomph::NicosConstitutiveEquation< DIM >:

Public Member Functions
	NicosConstitutiveEquation (double mu_inf_pt, double mu_0_pt, double *alpha_pt)

double	viscosity (const double &second_invariant_of_rate_of_strain_tensor)
	Function implementing the constitutive model Input: second invariant of the rate of strain Output: the viscosity For Newtonian behaviour this returns 1.

double	dviscosity_dinvariant (const double &second_invariant_of_rate_of_strain_tensor)
	Function returning the derivative of the viscosity w.r.t. the second invariant of the rate of strain tensor For Newtonian behaviour this returns 0.0.

Public Member Functions inherited from oomph::GeneralisedNewtonianConstitutiveEquation< DIM >
	GeneralisedNewtonianConstitutiveEquation ()
	Empty constructor.

virtual	~GeneralisedNewtonianConstitutiveEquation ()
	Empty virtual destructor.

Private Attributes
double *	Mu_inf_pt
	high shear rate viscosity

double *	Mu_0_pt
	zero shear rate viscosity

double *	Alpha_pt
	parameter that controls the steepness of the curve

Detailed Description

template<unsigned DIM>
class oomph::NicosConstitutiveEquation< DIM >

A GeneralisedNewtonianConstitutiveEquation class defining an arbitrary shear-thinning fluid.

Definition at line 1091 of file generalised_newtonian_constitutive_models.h.

Constructor & Destructor Documentation

◆ NicosConstitutiveEquation()

template<unsigned DIM>

oomph::NicosConstitutiveEquation< DIM >::NicosConstitutiveEquation	(	double *	mu_inf_pt,
		double *	mu_0_pt,
		double *	alpha_pt
	)

inline

Definition at line 1106 of file generalised_newtonian_constitutive_models.h.

Member Function Documentation

◆ dviscosity_dinvariant()

template<unsigned DIM>

double oomph::NicosConstitutiveEquation< DIM >::dviscosity_dinvariant ( const double & second_invariant_of_rate_of_strain_tensor )

inlinevirtual

Function returning the derivative of the viscosity w.r.t. the second invariant of the rate of strain tensor For Newtonian behaviour this returns 0.0.

Implements oomph::GeneralisedNewtonianConstitutiveEquation< DIM >.

Definition at line 1123 of file generalised_newtonian_constitutive_models.h.

References oomph::NicosConstitutiveEquation< DIM >::Alpha_pt.

◆ viscosity()

template<unsigned DIM>

double oomph::NicosConstitutiveEquation< DIM >::viscosity ( const double & second_invariant_of_rate_of_strain_tensor )

inlinevirtual

Function implementing the constitutive model Input: second invariant of the rate of strain Output: the viscosity For Newtonian behaviour this returns 1.

Implements oomph::GeneralisedNewtonianConstitutiveEquation< DIM >.

Definition at line 1116 of file generalised_newtonian_constitutive_models.h.

References oomph::NicosConstitutiveEquation< DIM >::Alpha_pt, and oomph::NicosConstitutiveEquation< DIM >::Mu_inf_pt.