alphaContactAngle

Description

The alphaContactAngle is a boundary condition that provides contact-angle boundary condition for multi-phase interface-capturing simulations. It is used in conjunction with multiphaseSystem.

Usage

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

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type                      alphaContactAngle;
    thetaProperties
    (
        (<phase1> <phase2>) <scalar1> <scalar2> <scalar3> <scalar4>
        (<phase3> <phase2>) <scalar1> <scalar2> <scalar3> <scalar4>
        ...
    );

    // Inherited entries
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: alphaContactAngle	word	yes	-
thetaProperties	Contact-angle properties	dict	yes	-
<scalar1>	Equilibrium contact angle	scalar	yes	-
<scalar2>	Dynamic contact angle velocity scale	scalar	yes	-
<scalar3>	Limiting advancing contact angle	scalar	yes	-
<scalar4>	Limiting receding contact angle	scalar	yes	-

The inherited entries are elaborated in:

• zeroGradientFvPatchFields.H

Further information

Tutorial:

• damBreak4phase

Source code:

• alphaContactAngle

API:

• Foam::reactingMultiphaseEuler::alphaContactAngleFvPatchScalarField

History: Introduced in version v2012