bladeModel.H

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2020 OpenCFD Ltd.
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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.
 
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    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::bladeModel
 
Description
    Blade model class calculates:
      - Linear interpolated blade twist and chord based on radial position
      - Interpolation factor (for interpolating profile performance)
 
Usage
    Minimal example by using \c constant/fvOptions:
    rotorDiskSource1
    {
        // Mandatory/Optional (inherited) entries
        ...
 
        // Mandatory entries (runtime modifiable)
        blade
        {
            // Mandatory entries (runtime modifiable)
            data
            (
                (profile1 (radius1 twist1 chord1))
                (profile1 (radius2 twist2 chord2))
                ...
                ([0]      ([1]     [2]    [3]))
            );
 
            // Optional entries (runtime modifiable)
            file    <fileName>;
        }
    }
 
    where the entries mean:
    \table
      Property   | Description                          | Type  | Reqd | Dflt
      blade      | Dictionary name: blade               | word  | yes  | -
      data       | Blade characteristics in list format | list  | yes  | -
      [0] (profile) | Corresponding profile name per section | word   | yes | -
      [1] (radius) | Radial position of the blade section [m] | scalar | yes | -
      [2] (twist)   | Twist angle of the blade section [deg] | scalar | yes | -
      [3] (chord)   | Chord length of the blade section [m]  | scalar | yes | -
      file  | Name of file containing blade characteristics  | word   | no  | -
    \endtable
 
Note
  - The entry \c twist is internally converted from [deg] to [rad].
 
See also
  - Foam::fv::rotorDiskSource
 
SourceFiles
    bladeModel.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef bladeModel_H
#define bladeModel_H
 
#include "List.H"
#include "dictionary.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                         Class bladeModel Declaration
\*---------------------------------------------------------------------------*/
 
class bladeModel
{
protected:
 
    // Protected Data
 
        //- Corresponding profile name per section
        List<word> profileName_;
 
        //- Corresponding profile ID per section
        List<label> profileID_;
 
        //- Radius [m]
        List<scalar> radius_;
 
        //- Twist [deg] on input, converted to [rad]
        List<scalar> twist_;
 
        //- Chord [m]
        List<scalar> chord_;
 
        //- File name (optional)
        fileName fName_;
 
 
    // Protected Member Functions
 
        //- Return true if file name is set
        bool readFromFile() const;
 
        //- Return the interpolation indices and gradient
        void interpolateWeights
        (
            const scalar& xIn,
            const List<scalar>& values,
            label& i1,
            label& i2,
            scalar& ddx
        ) const;
 
 
public:
 
    // Constructors
 
        //- Construct from dictionary
        bladeModel(const dictionary& dict);
 
        //- No copy construct
        bladeModel(const bladeModel&) = delete;
 
        //- No copy assignment
        void operator=(const bladeModel&) = delete;
 
 
    //- Destructor
    virtual ~bladeModel() = default;
 
 
    // Member Functions
 
        // Access
 
            //- Return const access to the profile name list
            const List<word>& profileName() const;
 
            //- Return const access to the profile ID list
            const List<label>& profileID() const;
 
            //- Return const access to the radius list
            const List<scalar>& radius() const;
 
            //- Return const access to the twist list
            const List<scalar>& twist() const;
 
            //- Return const access to the chord list
            const List<scalar>& chord() const;
 
 
        // Edit
 
            //- Return non-const access to the profile ID list
            List<label>& profileID();
 
 
        // Evaluation
 
            //- Return the twist and chord for a given radius
            virtual void interpolate
            (
                const scalar radius,
                scalar& twist,
                scalar& chord,
                label& i1,
                label& i2,
                scalar& invDr
            ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //