Diffusion based turbulent combustion model for multicomponent species. More...

Inheritance diagram for diffusionMulticomponent< CombThermoType, ThermoType >:

Collaboration diagram for diffusionMulticomponent< CombThermoType, ThermoType >:

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Public Member Functions
	TypeName ("diffusionMulticomponent")
	Runtime type information. More...

	diffusionMulticomponent (const word &modelType, const fvMesh &mesh, const word &phaseName)
	Construct from components. More...

virtual	~diffusionMulticomponent ()
	Destructor. More...

virtual void	correct ()
	Correct combustion rate. More...

virtual tmp< fvScalarMatrix >	R (volScalarField &Y) const
	Fuel consumption rate matrix. More...

virtual tmp< volScalarField >	dQ () const
	Heat release rate calculated from fuel consumption rate matrix. More...

virtual tmp< volScalarField >	Sh () const
	Return source for enthalpy equation [kg/m/s3]. More...

virtual bool	read ()
	Update properties from given dictionary. More...

Private Member Functions
tmp< volScalarField >	tc () const
	Return the chemical time scale. More...

void	init ()
	Initialize. More...

	diffusionMulticomponent (const diffusionMulticomponent &)
	Disallow copy construct. More...

void	operator= (const diffusionMulticomponent &)
	Disallow default bitwise assignment. More...

Private Attributes
const PtrList< Reaction< ThermoType > > &	reactions_
	Reactions. More...

const PtrList< ThermoType > &	specieThermo_
	Thermodynamic data of the species. More...

PtrList< volScalarField >	RijPtr_
	Pointer list of source terms. More...

scalarList	Ci_
	Model constants. More...

wordList	fuelNames_
	List of fuels for each reaction. More...

wordList	oxidantNames_
	List of oxidants for each reaction. More...

scalarList	qFuel_
	Heat of combustion [J/Kg]. More...

scalarList	stoicRatio_
	Stoichiometric air-fuel mass ratio. More...

scalarList	s_
	Stoichiometric oxygen-fuel mass ratio. More...

scalarList	YoxStream_
	Oxydaser sream mass concentrations. More...

scalarList	YfStream_
	Fuel stream mass concentrations. More...

scalarList	sigma_
	Mean distribution for gaussian probabililty. More...

scalarList	oxidantRes_
	Residual oxydaser. More...

scalarList	ftCorr_
	ft stochiometric correction More...

scalar	alpha_
	Relaxatnio factor on total source. More...

bool	laminarIgn_
	Switch on to laminar combustion for ignition. More...

Detailed Description

template<class CombThermoType, class ThermoType>
class Foam::combustionModels::diffusionMulticomponent< CombThermoType, ThermoType >

Diffusion based turbulent combustion model for multicomponent species.

The model calculates the laminar finite rate source terms based on the kinetic for each reaction in order to begin the combustion and evaluates the minimum between this and the cross diffusion rate term defined as D*prob*muEff*mag(grad(Yi)*grad(Yj)) if laminarIgn is true.

where:

D : is a model dynamic constant defined as C*f02 where: C is a model constant f02 = 1 + sqr(O2/oxidantRes), oxidantRes is an user input

muEff : is the effective turbulent viscosity prob : is a normalized Gaussian shaped distribution around the stoichiometric value of each reaction. The distribtion is controled by 'sigma' for standard deviation and ftCorr for correction of the stoichiometric value.

In the combustion properties dictionary:

diffusionMulticomponentCoeffs { Ci (1.0 1.0); // Default to 1 fuels (CH4 CO); oxidants (O2 O2); YoxStream (0.23 0.23); // Default to 0.23 YfStream (1.0 1.0); // Default to 1.0 sigma (0.02 0.02); // Default to 0.02 oxidantRes (0.025 0.005); ftCorr (0.0 0.0); // Default to 0.0 laminarIgn false; // Default false }

Source files

Definition at line 87 of file diffusionMulticomponent.H.

Constructor & Destructor Documentation

◆ diffusionMulticomponent() [1/2]

diffusionMulticomponent ( const diffusionMulticomponent< CombThermoType, ThermoType > & )

private

Disallow copy construct.

◆ diffusionMulticomponent() [2/2]

diffusionMulticomponent	(	const word &	modelType,
		const fvMesh &	mesh,
		const word &	phaseName
	)

Construct from components.

Definition at line 155 of file diffusionMulticomponent.C.

◆ ~diffusionMulticomponent()

~diffusionMulticomponent

virtual

Destructor.

Definition at line 192 of file diffusionMulticomponent.C.

Member Function Documentation

◆ tc()

Foam::tmp< Foam::volScalarField > tc

private

Return the chemical time scale.

Definition at line 200 of file diffusionMulticomponent.C.

◆ init()

void init

private

Initialize.

Definition at line 36 of file diffusionMulticomponent.C.

References Foam::dimMass, Foam::dimTime, Foam::dimVolume, Foam::endl(), forAll, found, Foam::Info, k, lookup(), Foam::mag(), Foam::name(), readScalar, List::size(), and thermo.

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◆ operator=()

void operator= ( const diffusionMulticomponent< CombThermoType, ThermoType > & )

private

Disallow default bitwise assignment.

◆ TypeName()

TypeName ( "diffusionMulticomponent< CombThermoType, ThermoType >" )

Runtime type information.

◆ correct()

void correct

virtual

Correct combustion rate.

Definition at line 208 of file diffusionMulticomponent.C.

References GeometricField::dimensionedInternalField(), Foam::dimMass, Foam::dimTime, Foam::dimVolume, Foam::constant::electromagnetic::e, Foam::exp(), forAll, Foam::fvc::grad(), k, Foam::mag(), Foam::max(), Foam::min(), Foam::name(), Foam::constant::mathematical::pi(), Foam::pos(), GeometricField::relax(), PtrList::set(), Foam::constant::physicoChemical::sigma, Foam::sqr(), Foam::sqrt(), thermo, and turbulence.

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◆ R()

Foam::tmp< Foam::fvScalarMatrix > R ( volScalarField & Y ) const

virtual

Fuel consumption rate matrix.

Definition at line 410 of file diffusionMulticomponent.C.

References Foam::dimMass, Foam::dimTime, Foam::fvc::Su(), thermo, and Y.

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◆ dQ()

Foam::tmp< Foam::volScalarField > dQ

virtual

Heat release rate calculated from fuel consumption rate matrix.

Definition at line 429 of file diffusionMulticomponent.C.

References Foam::dimEnergy, Foam::dimTime, dQ, mesh, and timeName.

◆ Sh()

Foam::tmp< Foam::volScalarField > Sh

virtual

Return source for enthalpy equation [kg/m/s3].

Definition at line 463 of file diffusionMulticomponent.C.

References Foam::dimEnergy, Foam::dimTime, Foam::dimVolume, mesh, Sh, and timeName.

◆ read()

bool read

virtual

Update properties from given dictionary.

Definition at line 496 of file diffusionMulticomponent.C.

References Foam::read().

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Field Documentation

◆ reactions_

const PtrList<Reaction<ThermoType> >& reactions_

private

Reactions.

Definition at line 94 of file diffusionMulticomponent.H.

◆ specieThermo_

const PtrList<ThermoType>& specieThermo_

private

Thermodynamic data of the species.

Definition at line 97 of file diffusionMulticomponent.H.

◆ RijPtr_

PtrList<volScalarField> RijPtr_

private

Pointer list of source terms.

Definition at line 100 of file diffusionMulticomponent.H.

◆ Ci_

scalarList Ci_

private

Model constants.

Definition at line 103 of file diffusionMulticomponent.H.

◆ fuelNames_

wordList fuelNames_

private

List of fuels for each reaction.

Definition at line 106 of file diffusionMulticomponent.H.

◆ oxidantNames_

wordList oxidantNames_

private

List of oxidants for each reaction.

Definition at line 109 of file diffusionMulticomponent.H.

◆ qFuel_

scalarList qFuel_

private

Heat of combustion [J/Kg].

Definition at line 112 of file diffusionMulticomponent.H.

◆ stoicRatio_

scalarList stoicRatio_

private

Stoichiometric air-fuel mass ratio.

Definition at line 115 of file diffusionMulticomponent.H.

◆ s_

scalarList s_

private

Stoichiometric oxygen-fuel mass ratio.

Definition at line 118 of file diffusionMulticomponent.H.

◆ YoxStream_

scalarList YoxStream_

private

Oxydaser sream mass concentrations.

Definition at line 121 of file diffusionMulticomponent.H.

◆ YfStream_

scalarList YfStream_

private

Fuel stream mass concentrations.

Definition at line 124 of file diffusionMulticomponent.H.

◆ sigma_

scalarList sigma_

private

Mean distribution for gaussian probabililty.

Definition at line 127 of file diffusionMulticomponent.H.

◆ oxidantRes_

scalarList oxidantRes_

private

Residual oxydaser.

Definition at line 130 of file diffusionMulticomponent.H.

◆ ftCorr_

scalarList ftCorr_

private

ft stochiometric correction

Definition at line 133 of file diffusionMulticomponent.H.

◆ alpha_

scalar alpha_

private

Relaxatnio factor on total source.

Definition at line 136 of file diffusionMulticomponent.H.

◆ laminarIgn_

bool laminarIgn_

private

Switch on to laminar combustion for ignition.

Definition at line 139 of file diffusionMulticomponent.H.

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

src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.H
src/combustionModels/diffusionMulticomponent/diffusionMulticomponent.C

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

template<class CombThermoType, class ThermoType> class Foam::combustionModels::diffusionMulticomponent< CombThermoType, ThermoType >

Constructor & Destructor Documentation

◆ diffusionMulticomponent() [1/2]

◆ diffusionMulticomponent() [2/2]

◆ ~diffusionMulticomponent()

Member Function Documentation

◆ tc()

◆ init()

◆ operator=()

◆ TypeName()

◆ correct()

◆ R()

◆ dQ()

◆ Sh()

◆ read()

Field Documentation

◆ reactions_

◆ specieThermo_

◆ RijPtr_

◆ Ci_

◆ fuelNames_

◆ oxidantNames_

◆ qFuel_

◆ stoicRatio_

◆ s_

◆ YoxStream_

◆ YfStream_

◆ sigma_

◆ oxidantRes_

◆ ftCorr_

◆ alpha_

◆ laminarIgn_

template<class CombThermoType, class ThermoType>
class Foam::combustionModels::diffusionMulticomponent< CombThermoType, ThermoType >