tug/examples/FTCS_2D_proto_example.cpp

/**
 * @file FTCS_2D_proto_example.cpp
 * @author Hannes Signer, Philipp Ungrund
 * @brief Creates a prototypical standard TUG simulation in 2D with FTCS approach
 * and constant boundary condition
 * 
 */

#include <tug/Simulation.hpp>
#include <easy/profiler.h>
#define EASY_PROFILER_ENABLE ::profiler::setEnabled(true);


int main(int argc, char *argv[]) {
    EASY_PROFILER_ENABLE;
    profiler::startListen();  
    // **************
    // **** GRID ****
    // **************
    profiler::startListen();
    // create a grid with a 20 x 20 field
    int row = 20;
    int col = 20;
    Grid grid = Grid(row,col);

    // (optional) set the domain, e.g.:
    // grid.setDomain(20, 20);

    // (optional) set the concentrations, e.g.:
    // MatrixXd concentrations = MatrixXd::Constant(20,20,1000); // #row,#col,value
    // grid.setConcentrations(concentrations);
    MatrixXd concentrations = MatrixXd::Constant(row, col,1);
    concentrations(0,0) = 2000;
    grid.setConcentrations(concentrations);

    // (optional) set alphas of the grid, e.g.:
    // MatrixXd alphax = MatrixXd::Constant(20,20,1); // row,col,value
    // MatrixXd alphay = MatrixXd::Constant(20,20,1); // row,col,value
    // grid.setAlpha(alphax, alphay);


    // ******************
    // **** BOUNDARY ****
    // ******************

    // create a boundary with constant values
    Boundary bc = Boundary(grid, BC_TYPE_CONSTANT);

    // (optional) set boundary condition values for one side, e.g.:
    // VectorXd bc_left_values = VectorXd::Constant(20,1); // length,value
    // bc.setBoundaryConditionValue(BC_SIDE_LEFT, bc_left_values); // side,values
    VectorXd bc_zero_values = VectorXd::Constant(20,0);
    bc.setBoundaryConditionValue(BC_SIDE_LEFT, bc_zero_values);
    bc.setBoundaryConditionValue(BC_SIDE_RIGHT, bc_zero_values);
    VectorXd bc_front_values = VectorXd::Constant(20,2000);
    bc.setBoundaryConditionValue(BC_SIDE_TOP, bc_front_values);
    bc.setBoundaryConditionValue(BC_SIDE_BOTTOM, bc_zero_values);


    // ************************
    // **** SIMULATION ENV ****
    // ************************

    // set up a simulation environment
    Simulation simulation = Simulation(grid, bc, FTCS_APPROACH); // grid,boundary,simulation-approach

    // (optional) set the timestep of the simulation
    simulation.setTimestep(0.1); // timestep

    // (optional) set the number of iterations
    simulation.setIterations(2);

    // (optional) set kind of output [CSV_OUTPUT_OFF (default), CSV_OUTPUT_ON, CSV_OUTPUT_VERBOSE]
    simulation.setOutputCSV(CSV_OUTPUT_VERBOSE);
    
    // **** RUN SIMULATION ****
    
    // run the simulation

    EASY_BLOCK("SIMULATION")
    simulation.run();
    EASY_END_BLOCK;
    profiler::dumpBlocksToFile("test_profile.prof");
    profiler::stopListen();
}