A GeneralisedNewtonianConstitutiveEquation class defining a fluid following a tanh-profile. More...

#include <generalised_newtonian_constitutive_models.h>

Inheritance diagram for oomph::TanhProfileConstitutiveEquation< DIM >:

Public Member Functions
	TanhProfileConstitutiveEquation (double mu_inf_pt, double mu_0_pt, double alpha_pt, double critical_second_invariant_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. More...

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. More...

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

virtual	~GeneralisedNewtonianConstitutiveEquation ()
	Empty virtual destructor. More...

Private Attributes
double *	Mu_inf_pt
	high shear rate viscosity More...

double *	Mu_0_pt
	zero shear rate viscosity More...

double *	Alpha_pt
	parameter controlling the steepness of the step nb – I used 10.0/(*Critical_second_invariant_pt) More...

double *	Critical_second_invariant_pt
	parameter that controls the location of the step – assumed to be always positive More...

Detailed Description

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

A GeneralisedNewtonianConstitutiveEquation class defining a fluid following a tanh-profile.

Definition at line 1145 of file generalised_newtonian_constitutive_models.h.

Constructor & Destructor Documentation

◆ TanhProfileConstitutiveEquation()

template<unsigned DIM>

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

inline

Definition at line 1164 of file generalised_newtonian_constitutive_models.h.

Member Function Documentation

◆ dviscosity_dinvariant()

template<unsigned DIM>

double oomph::TanhProfileConstitutiveEquation< 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 1193 of file generalised_newtonian_constitutive_models.h.

References oomph::TanhProfileConstitutiveEquation< DIM >::Critical_second_invariant_pt.

◆ viscosity()

template<unsigned DIM>

double oomph::TanhProfileConstitutiveEquation< 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 1176 of file generalised_newtonian_constitutive_models.h.

References oomph::TanhProfileConstitutiveEquation< DIM >::Alpha_pt, oomph::TanhProfileConstitutiveEquation< DIM >::Critical_second_invariant_pt, oomph::TanhProfileConstitutiveEquation< DIM >::Mu_0_pt, and oomph::TanhProfileConstitutiveEquation< DIM >::Mu_inf_pt.