alphaContactAngleFvPatchScalarField.H

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    Copyright (C) 2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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Class
    Foam::alphaContactAngleFvPatchScalarField
 
Description
    Contact-angle boundary condition for multi-phase interface-capturing
    simulations.  Used in conjunction with \c multiphaseSystem.
 
Usage
    Example of the boundary condition specification:
    \verbatim
    <patch>
    {
        // Mandatory entries
        type                      alphaContactAngle;
        thetaProperties
        (
            (<phase1> <phase2>) <scalar1> <scalar2> <scalar3> <scalar4>
            (<phase3> <phase2>) <scalar1> <scalar2> <scalar3> <scalar4>
            ...
        );
 
        // Inherited entries
        ...
    }
    \endverbatim
 
    where the entries mean:
    \table
      Property  | Description                             | Type | Reqd | Deflt
      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  |-
    \endtable
 
    The inherited entries are elaborated in:
     - \link zeroGradientFvPatchFields.H \endlink
 
SourceFiles
    alphaContactAngleFvPatchScalarField.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef alphaContactAngleFvPatchScalarField_H
#define alphaContactAngleFvPatchScalarField_H
 
#include "zeroGradientFvPatchFields.H"
#include "multiphaseSystem.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                    Class alphaContactAngleFvPatch Declaration
\*---------------------------------------------------------------------------*/
 
class alphaContactAngleFvPatchScalarField
:
    public zeroGradientFvPatchScalarField
{
public:
 
    class interfaceThetaProps
    {
        //- Equilibrium contact angle
        scalar theta0_;
 
        //- Dynamic contact angle velocity scale
        scalar uTheta_;
 
        //- Limiting advancing contact angle
        scalar thetaA_;
 
        //- Limiting receding contact angle
        scalar thetaR_;
 
 
    public:
 
        // Constructors
 
            //- Default construct
            interfaceThetaProps()
            {}
 
            //- Construct from Istream
            interfaceThetaProps(Istream&);
 
 
        // Member Functions
 
            //- Return the equilibrium contact angle theta0
            scalar theta0(bool matched=true) const
            {
                if (matched) return theta0_;
                else return 180.0 - theta0_;
            }
 
            //- Return the dynamic contact angle velocity scale
            scalar uTheta() const noexcept
            {
                return uTheta_;
            }
 
            //- Return the limiting advancing contact angle
            scalar thetaA(bool matched=true) const
            {
                if (matched) return thetaA_;
                else return 180.0 - thetaA_;
            }
 
            //- Return the limiting receding contact angle
            scalar thetaR(bool matched=true) const
            {
                if (matched) return thetaR_;
                else return 180.0 - thetaR_;
            }
 
 
        // IOstream operators
 
            friend Istream& operator>>(Istream&, interfaceThetaProps&);
            friend Ostream& operator<<(Ostream&, const interfaceThetaProps&);
    };
 
    typedef HashTable
    <
        interfaceThetaProps,
        phasePairKey,
        phasePairKey::hash
    > thetaPropsTable;
 
 
private:
 
    // Private Data
 
        //- Interface properties
        thetaPropsTable thetaProps_;
 
 
public:
 
    //- Runtime type information
    TypeName("alphaContactAngle");
 
 
    // Constructors
 
        //- Construct from patch and internal field
        alphaContactAngleFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct from patch, internal field and dictionary
        alphaContactAngleFvPatchScalarField
        (
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const dictionary&
        );
 
        //- Construct by mapping given alphaContactAngleFvPatchScalarField
        //- onto a new patch
        alphaContactAngleFvPatchScalarField
        (
            const alphaContactAngleFvPatchScalarField&,
            const fvPatch&,
            const DimensionedField<scalar, volMesh>&,
            const fvPatchFieldMapper&
        );
 
        //- Construct and return a clone
        virtual tmp<fvPatchScalarField> clone() const
        {
            return tmp<fvPatchScalarField>
            (
                new alphaContactAngleFvPatchScalarField(*this)
            );
        }
 
        //- Construct as copy setting internal field reference
        alphaContactAngleFvPatchScalarField
        (
            const alphaContactAngleFvPatchScalarField&,
            const DimensionedField<scalar, volMesh>&
        );
 
        //- Construct and return a clone setting internal field reference
        virtual tmp<fvPatchScalarField> clone
        (
            const DimensionedField<scalar, volMesh>& iF
        ) const
        {
            return tmp<fvPatchScalarField>
            (
                new alphaContactAngleFvPatchScalarField(*this, iF)
            );
        }
 
 
    // Member Functions
 
        //- Return the contact angle properties
        const thetaPropsTable& thetaProps() const noexcept
        {
            return thetaProps_;
        }
 
        //- Write
        virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //