lookupProfile.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::lookupProfile
 
Description
    Look-up based profile data - drag and lift coefficients are lineraly
    interpolated based on the supplied angle of attack
 
    Input in list format:
 
        data
        (
            (AOA1 Cd1 Cl2)
            (AOA2 Cd2 Cl2)
            ...
            (AOAN CdN CdN)
        );
 
    where:
        AOA = angle of attack [deg] converted to [rad] internally
        Cd  = drag coefficient
        Cl  = lift coefficient
 
SourceFiles
    lookupProfile.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef lookupProfile_H
#define lookupProfile_H
 
#include "profileModel.H"
#include "List.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                        Class lookupProfile Declaration
\*---------------------------------------------------------------------------*/
 
class lookupProfile
:
    public profileModel
{
 
protected:
 
    // Protected data
 
        //- List of angle-of-attack values [deg] on input, converted to [rad]
        List<scalar> AOA_;
 
        //- List of drag coefficient values
        List<scalar> Cd_;
 
        //- List of lift coefficient values
        List<scalar> Cl_;
 
 
    // Protected Member Functions
 
        //- Return the interpolation indices and gradient
        void interpolateWeights
        (
            const scalar& xIn,
            const List<scalar>& values,
            label& i1,
            label& i2,
            scalar& ddx
        ) const;
 
 
public:
 
    //- Runtime type information
    TypeName("lookup");
 
    //- Constructor
    lookupProfile(const dictionary& dict, const word& modelName);
 
 
    // Member functions
 
        // Evaluation
 
            //- Return the Cd and Cl for a given angle-of-attack
            virtual void Cdl(const scalar alpha, scalar& Cd, scalar& Cl) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //