MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number > Class Template Reference

Base class for the shear stress computation of an incompressible fluid material. More...

#include <incompressible_flow_material_base.hpp>

Inheritance diagram for MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >:

Public Member Functions
virtual	~IncompressibleMaterialBase ()=default
virtual void	reinit (const dealii::Tensor< 2, dim, dealii::VectorizedArray< number > > &velocity_gradient, const unsigned int cell_idx, const unsigned int quad_idx)=0
	Reinit function to be used to compute quadrature point variables.
virtual dealii::Tensor< 2, dim, dealii::VectorizedArray< number > >	get_tau ()=0
	Compute the deviatoric stress τ for the given velocity gradient ∇u, set by reinit().
virtual dealii::Tensor< 2, dim, dealii::VectorizedArray< number > >	get_vmult_d_tau_d_grad_vel ()=0
	Compute the material tangent of the deviatoric stress and perform a vmult with the gradient of the nodal DoF values δu, set by reinit(),.
virtual void	update_ghost_values ()
	Update ghost values of the vectors, to be used to compute the deviatoric stress.
virtual void	zero_out_ghost_values ()
	Zero out ghost values of the vectors, to be used to compute the deviatoric stress.

Detailed Description

template<int dim, typename number>
class MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >

Base class for the shear stress computation of an incompressible fluid material.

It is assumed that the stress computation has the form

σ = -p * I + τ

with the Cauchy stress tensor σ, the pressure p, the second-order Identity tensor I and the deviatoric stress tensor τ.

Note

The pressure p is given from the incompressibility constraint from the flow solver and solely the deviatoric stress τ will be computed herein. Thus, the material law relates solely the deviatoric (shear) stress tensor to the velocity gradient ∇u:

τ(∇u)

Constructor & Destructor Documentation

~IncompressibleMaterialBase()

template<int dim, typename number >

virtual MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >::~IncompressibleMaterialBase ( )

virtualdefault

Member Function Documentation

get_tau()

template<int dim, typename number >

virtual dealii::Tensor< 2, dim, dealii::VectorizedArray< number > > MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >::get_tau ( )

pure virtual

Compute the deviatoric stress τ for the given velocity gradient ∇u, set by reinit().

Returns

Deviatoric stress tensor τ(∇u).

Implemented in MeltPoolDG::Evaporation::IncompressibleNewtonianFluidEvaporationMaterial< dim, number >.

get_vmult_d_tau_d_grad_vel()

template<int dim, typename number >

virtual dealii::Tensor< 2, dim, dealii::VectorizedArray< number > > MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >::get_vmult_d_tau_d_grad_vel ( )

pure virtual

Compute the material tangent of the deviatoric stress and perform a vmult with the gradient of the nodal DoF values δu, set by reinit(),.

∂ τ ---— * ∇N * δu ∂ ∇u |________| material tangent

with the shape functions N.

Returns

Material tangent of the deviatoric stress tensor multiplied with the gradient of the nodal DoF values δu.

Implemented in MeltPoolDG::Evaporation::IncompressibleNewtonianFluidEvaporationMaterial< dim, number >.

reinit()

template<int dim, typename number >

virtual void MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >::reinit ( const dealii::Tensor< 2, dim, dealii::VectorizedArray< number > > &  velocity_gradient, const unsigned int  cell_idx, const unsigned int  quad_idx  )

pure virtual

Reinit function to be used to compute quadrature point variables.

Parameters

velocity_gradient	Gradient of the velocity vector.
cell_idx	Current cell index.
quad_idx	Current quadrature point index.

Implemented in MeltPoolDG::Evaporation::IncompressibleNewtonianFluidEvaporationMaterial< dim, number >.

update_ghost_values()

template<int dim, typename number >

virtual void MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >::update_ghost_values ( )

inlinevirtual

Update ghost values of the vectors, to be used to compute the deviatoric stress.

Default: do nothing

Reimplemented in MeltPoolDG::Evaporation::IncompressibleNewtonianFluidEvaporationMaterial< dim, number >.

zero_out_ghost_values()

template<int dim, typename number >

virtual void MeltPoolDG::Flow::IncompressibleMaterialBase< dim, number >::zero_out_ghost_values ( )

inlinevirtual

Zero out ghost values of the vectors, to be used to compute the deviatoric stress.

Default: do nothing

Reimplemented in MeltPoolDG::Evaporation::IncompressibleNewtonianFluidEvaporationMaterial< dim, number >.

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

• include/meltpooldg/flow/incompressible_flow_material_base.hpp