utilities/ExtractCriticalLayer.cpp

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///////////////////////////////////////////////////////////////////////////////
//
// File: ExtractCriticalLayer.cpp
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// Description: Extract location of critical layer from streak file
//
///////////////////////////////////////////////////////////////////////////////
 
#include <cstdio>
#include <cstdlib>
 
#include <MultiRegions/ExpList.h>
 
using namespace std;
using namespace Nektar;
 
#include "ExtractCriticalLayerFunctions.h"
 
int main(int argc, char *argv[])
{
    int i;
    NekDouble cr = 0;
 
    if (argc != 3)
    {
        fprintf(stderr,
                "Usage: ./ExtractCriticalLayer  meshfile fieldfile  \n");
        exit(1);
    }
 
    //------------------------------------------------------------
    // Create Session file.
    LibUtilities::SessionReaderSharedPtr vSession =
        LibUtilities::SessionReader::CreateInstance(argc, argv);
    //-----------------------------------------------------------
 
    //-------------------------------------------------------------
    // Read in mesh from input file
    SpatialDomains::MeshGraphSharedPtr graphShPt =
        SpatialDomains::MeshGraph::Read(vSession);
    //------------------------------------------------------------
 
    //-------------------------------------------------------------
    // Define Streak Expansion
    MultiRegions::ExpListSharedPtr streak;
 
    streak = MemoryManager<MultiRegions::ExpList>::AllocateSharedPtr(vSession,
                                                                     graphShPt);
    //---------------------------------------------------------------
 
    //----------------------------------------------
    // Import field file.
    string fieldfile(argv[argc - 1]);
    vector<LibUtilities::FieldDefinitionsSharedPtr> fielddef;
    vector<vector<NekDouble>> fielddata;
    LibUtilities::Import(fieldfile, fielddef, fielddata);
    //----------------------------------------------
 
    //----------------------------------------------
    // Copy data from field file
    string streak_field("w");
    for (unsigned int i = 0; i < fielddata.size(); ++i)
    {
        streak->ExtractDataToCoeffs(fielddef[i], fielddata[i], streak_field,
                                    streak->UpdateCoeffs());
    }
    //----------------------------------------------
 
    int npts;
    vSession->LoadParameter("NumCriticalLayerPts", npts, 30);
    Array<OneD, NekDouble> x_c(npts);
    Array<OneD, NekDouble> y_c(npts);
 
    NekDouble trans;
    vSession->LoadParameter("WidthOfLayers", trans, 0.1);
 
    Computestreakpositions(streak, x_c, y_c, cr, trans);
 
    cout << "# x_c y_c" << endl;
    for (i = 0; i < npts; ++i)
    {
        fprintf(stdout, "%12.10lf %12.10lf \n", x_c[i], y_c[i]);
        // cout << x_c[i] << " " << y_c[i] << endl;
    }
}