KomPlasTechSolver

Usage

Binaries can be downloaded from here. Extract and run proper executable file from the bin directory. Make sure JRE (1.8+) is installed on the system and available on the PATH.

Command line arguments are:

--log / -l => logging detailed results (off by default)
--plot / -p => plotting results (on by default)
--problem-size / -s => specifying problem size (12 by default)
--max-threads / -t => enforcing maximum number of threads used (12 by default)
--delta / -d => time step (0.001 by default)
--steps / -o => number of time steps to run simulation for (100 by default)

Solving different problem

Code can be easily modified to solve a different problem. Only the following piece of code from SolverLauncher class should be replaced with values specific to the new problem:

SolutionsInTime solutionsInTime = nonStationarySolver.solveInTime(new NonStationaryProblem(delta) {

      @Override
      protected double getInitialValue(double x, double y) {
          double dist = (x - mesh.getCenterX()) * (x - mesh.getCenterX())
                  + (y - mesh.getCenterY()) * (y - mesh.getCenterY());

          return dist < finalProblemSize ? finalProblemSize - dist : 0;
      }

      @Override
      protected double getValueAtTime(double x, double y, Solution currentSolution, double delta) {
          double value = currentSolution.getValue(x, y);
          return value + delta * currentSolution.getLaplacian(x, y);
      }

})

Examples

Heat transfer simulation

In this example an exemplary problem of heat transfer is being solved. A ball of heat is put into the center of the plane gradually heating the surface. The grid size is 24x24 though it can be any value.

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