tug/examples/FTCS_1D_proto_example.cpp

#include "tug/Boundary.hpp"
#include <Eigen/Eigen>
#include <tug/Simulation.hpp>

using namespace Eigen;

int main(int argc, char *argv[]) {
  // **************
  // **** GRID ****
  // **************

  // create a linear grid with 20 cells
  int cells = 20;
  Grid grid = Grid(cells);

  MatrixXd concentrations = MatrixXd::Constant(1, 20, 20);
  grid.setConcentrations(concentrations);

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

  // create a boundary with constant values
  Boundary bc = Boundary(grid);
  bc.setBoundarySideConstant(BC_SIDE_LEFT, 1);
  bc.setBoundarySideConstant(BC_SIDE_RIGHT, 1);

  // ************************
  // **** 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(100);

  // (optional) set kind of output [CSV_OUTPUT_OFF (default), CSV_OUTPUT_ON,
  // CSV_OUTPUT_VERBOSE]
  simulation.setOutputCSV(CSV_OUTPUT_OFF);

  // **** RUN SIMULATION ****

  // run the simulation
  simulation.run();
}