NhsModelWithBackwardSolver.hpp

00001 /*
00002 
00003 Copyright (C) University of Oxford, 2005-2010
00004 
00005 University of Oxford means the Chancellor, Masters and Scholars of the
00006 University of Oxford, having an administrative office at Wellington
00007 Square, Oxford OX1 2JD, UK.
00008 
00009 This file is part of Chaste.
00010 
00011 Chaste is free software: you can redistribute it and/or modify it
00012 under the terms of the GNU Lesser General Public License as published
00013 by the Free Software Foundation, either version 2.1 of the License, or
00014 (at your option) any later version.
00015 
00016 Chaste is distributed in the hope that it will be useful, but WITHOUT
00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
00019 License for more details. The offer of Chaste under the terms of the
00020 License is subject to the License being interpreted in accordance with
00021 English Law and subject to any action against the University of Oxford
00022 being under the jurisdiction of the English Courts.
00023 
00024 You should have received a copy of the GNU Lesser General Public License
00025 along with Chaste. If not, see <http://www.gnu.org/licenses/>.
00026 
00027 */
00028 
00029 #ifndef NHSMODELWITHBACKWARDSOLVER_HPP_
00030 #define NHSMODELWITHBACKWARDSOLVER_HPP_
00031 
00032 #include "NhsContractionModel.hpp"
00033 #include "TimeStepper.hpp"
00034 #include <cmath>
00035 
00036 
00049 class NhsModelWithBackwardSolver : public NhsContractionModel
00050 {
00051 private:
00053     static const double mTolerance;
00054 
00056     double mDt;
00057 
00063     double ImplicitSolveForQ();
00064 
00075     void CalculateCaTropAndZDerivatives(double calciumTroponin, double z, double Q, double& dCaTrop, double& dz);
00076 
00090     void CalculateBackwardEulerResidual(double calciumTroponin, double z, double Q,
00091                                         double& residualComponent1, double& residualComponent2);
00092 
00093 public :
00097     NhsModelWithBackwardSolver();
00098 
00099 
00117     void RunDoNotUpdate(double startTime, double endTime, double timestep);
00118 
00119 
00120 
00128     double GetNextActiveTension();
00129 
00137     void RunAndUpdate(double startTime, double endTime, double timestep);
00138 };
00139 
00140 #endif /*NHSMODELWITHBACKWARDSOLVER_HPP_*/

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