MonodomainCorrectionTermAssembler.cpp

00001 /*
00002 
00003 Copyright (c) 2005-2015, University of Oxford.
00004 All rights reserved.
00005 
00006 University of Oxford means the Chancellor, Masters and Scholars of the
00007 University of Oxford, having an administrative office at Wellington
00008 Square, Oxford OX1 2JD, UK.
00009 
00010 This file is part of Chaste.
00011 
00012 Redistribution and use in source and binary forms, with or without
00013 modification, are permitted provided that the following conditions are met:
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00015    this list of conditions and the following disclaimer.
00016  * Redistributions in binary form must reproduce the above copyright notice,
00017    this list of conditions and the following disclaimer in the documentation
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00019  * Neither the name of the University of Oxford nor the names of its
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00021    software without specific prior written permission.
00022 
00023 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00024 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00025 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00026 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00027 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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00033 
00034 */
00035 
00036 
00037 #include "MonodomainCorrectionTermAssembler.hpp"
00038 
00039 template<unsigned ELEM_DIM, unsigned SPACE_DIM>
00040 MonodomainCorrectionTermAssembler<ELEM_DIM,SPACE_DIM>::MonodomainCorrectionTermAssembler(
00041         AbstractTetrahedralMesh<ELEM_DIM,SPACE_DIM>* pMesh,
00042         MonodomainTissue<ELEM_DIM,SPACE_DIM>* pTissue)
00043     : AbstractCorrectionTermAssembler<ELEM_DIM,SPACE_DIM,1>(pMesh,pTissue)
00044 {
00045     assert(this->mpConfig->GetUseStateVariableInterpolation());
00046 }
00047 
00048 template<unsigned ELEM_DIM, unsigned SPACE_DIM>
00049 c_vector<double,1*(ELEM_DIM+1)> MonodomainCorrectionTermAssembler<ELEM_DIM,SPACE_DIM>::ComputeVectorTerm(
00050     c_vector<double, ELEM_DIM+1> &rPhi,
00051     c_matrix<double, SPACE_DIM, ELEM_DIM+1> &rGradPhi /* not used */,
00052     ChastePoint<SPACE_DIM> &rX /* not used */,
00053     c_vector<double,1> &rU,
00054     c_matrix<double, 1, SPACE_DIM> &rGradU /* not used */,
00055     Element<ELEM_DIM,SPACE_DIM>* pElement)
00056 {
00057     double Am = this->mpConfig->GetSurfaceAreaToVolumeRatio();
00058 
00059     // compute the ionic current at this quadrature point using the
00060     // interpolated state variables, and a random choice of cell (all
00061     // should be the same)
00062     unsigned node_global_index = pElement->GetNodeGlobalIndex(0);
00063     AbstractCardiacCellInterface* p_any_cell = this->mpCardiacTissue->GetCardiacCellOrHaloCell(node_global_index);
00064     double ionic_sv_interp = p_any_cell->GetIIonic(&(this->mStateVariablesAtQuadPoint));
00065 
00066     // add on the SVI ionic current, and take away the original ICI (linearly
00067     // interpolated ionic current) that would have been added as part of
00068     // the matrix-based assembly stage.
00069     return rPhi * (-Am) * ( ionic_sv_interp - this->mIionicInterp );
00070 }
00071 
00072 
00073 
00074 
00076 // explicit instantiation
00078 
00079 template class MonodomainCorrectionTermAssembler<1,1>;
00080 template class MonodomainCorrectionTermAssembler<1,2>;
00081 template class MonodomainCorrectionTermAssembler<1,3>;
00082 template class MonodomainCorrectionTermAssembler<2,2>;
00083 template class MonodomainCorrectionTermAssembler<3,3>;

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