enthalpySorption

Description

The enthalpySorption is a boundary condition that provides a temperature boundary condition which works in conjunction with the speciesSorption condition for species.

This boundary condition substracts or adds enthalpy associated with the adsorption provided by the speciesSorption condition.

It can handle two enthalpy models:

• estimate
• calculated

On top of this, the enthalpy associated with the sensible enthalpy corresponding with the species transport can be added using includeHs.

Usage

The condition requires entries in both the boundary and field files.

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type                enthalpySorption;
    enthalpyModel       <word>;
    species             <word>;

    // Conditional mandatory entries

    // when enthalpyModel == calculated
    enthalpyTable       <Function1<scalar>>

        // enthalpyTable
        // {
        //     type            table;
        //     values          ((0 0)(1 50));
        // }

    // Optional entries
    includeHs           <bool>;
    C                   <scalar>;
    Hvap                <scalar>;
    dhdt                <scalarField>;
    p                   <word>;
    T                   <word>;

    // Inherited entries
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: enthalpySorption	word	yes	-
enthalpyModel	Adsorption enthalpy model	word	yes	-
species	Name of associated species	word	yes	-
enthalpyTable	Calculated enthalpy model table	Function1<scalar>	no	-
includeHs	Include sensible enthalpy	bool	no	true
C	Estimate enthalpy model constant	scalar	no	0
Hvap	Evaporation heat for species	scalar	no	0
p	Name of operand pressure field	word	no	p
T	Name of operand temperature field	word	no	T
dhdt	Enthalpy change on cells next to patch [J/kg]	scalarField	no	Zero

The inherited entries are elaborated in:

• zeroGradientFvPatchFields.H
• Function1.H
• boundarySourcePatch.H

Options for the enthalpyModel entry:

Property	Description
estimated	Enthalpy is estimated
calculated	Enthalpy is calculated based on enthalpyTable

Further information

Tutorial:

• groundAbsorption

Source code:

• enthalpySorption

API:

• Foam::enthalpySorptionFvPatchScalarField

History: Introduced in version 2206