---

equation.h

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/*
 * Copyright (c) 2001 The AUTHORS 
 *   Romeu Andre' Pieritz, Ph.D.        - romeu_pieritz@hotmail.com
 *   Rafael Mendes, Eng.                – mendes_rafael@yahoo.com
 *   Rodrigo Ferraz de Andrade, Eng.    – rferraz@iname.com 
 * All rights reserved.
 *
 * Permission to use, copy and distribute this software and its
 * documentation for educational and personal use, without fee is hereby granted, 
 * provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE AUTHORS
 * HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * THE AUTHORS SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HERE UNDER IS
 * ON AN "AS IS" BASIS, AND THE AUTHORS HAVE NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 *
 * SINMEC Lab. - CFD Sinflow Project - http://www.sinmec.ufsc.br/cfd
 */


// File Define
#ifndef __CSFL_MATH_EQUATION_EQUATION_H__
#define __CSFL_MATH_EQUATION_EQUATION_H__


// Include
#include <csfl/sys/core/sflobject.h>
#include <csfl/sys/core/string.h>
#include <csfl/sys/container/bcond.h>
#include <csfl/sys/container/param.h>
#include <csfl/geom/grid/grid.h>
#include <csfl/geom/metric/metric.h>
#include <csfl/sys/math/array2d.h>


// Namespace
namespace csfl {

//==============================================================================
//      enum TEquationType
//==============================================================================
typedef
        enum _TEquationType {
                etNULL,
                etEnergy,
                etMomU,
        etMomV,
                etPres,
                etMass,
                etConc,
                etDens,
                etSHeat,
                etMeshX,
                etMeshY
        }
        TEquationType;

//==============================================================================
//              Class ICoefficient
//              Description: data auxiliary class 
//==============================================================================
class ICoefficient 

{

public:

        static const ICoefficient zero;

        ICoefficient( 
                double = 0.0, double = 0.0, double = 0.0, 
                double = 0.0, double = 0.0, double = 0.0, 
                double = 0.0, double = 0.0, double = 0.0 ) 
                {}

        ICoefficient * operator = ( const ICoefficient & );

        double ap, an, as, ae, aw, ane, anw, ase, asw, b;
};

//==============================================================================
//              Class IEquation
//              Description: Base class for equation objects
//==============================================================================

class IEquation : 
        virtual public ISFLObject

{
                
public:
        IEquation( 
                const IString &_name,
                IContainerBCond *_contBCond,
                IContainerParameter *_contParam,
                TEquationType _et);     

        IEquation( IEquation *_eq );
        
        ~IEquation();

        IContainerBCond * ContainerBCond() { return contBCond; }
        
    void SetContainerBCond( IContainerBCond *);

        IContainerParameter * ContainerParameter() { return contParam; }
        
        const IString & Name() { return name; }

        void SetName( const IString & _name ) { name = _name; }

        virtual void SetupLinearSystem() {}

        TEquationType ID() { return id; }
        
        void SetID( TEquationType _id ) { id = _id; }

        virtual ISize Size() const { return ISize( ni, nj ); } 

protected:
        
        IContainerBCond         *contBCond;
        IContainerParameter *contParam; 
        IString     name;
        TEquationType       id;

        int ni, nj;

        virtual void SetupParameters() {}

};

    } // csfl namespace

#endif// __CSFL_MATH_EQUATION_EQUATION_H__

 

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