settings = ClassCopier.copy(defaultSettings);
settings.setInterpolator(new CloudInCell());
variousTestSettings.put("CloudInCell", settings);
settings = ClassCopier.copy(defaultSettings);
settings.setGridSolver(new SimpleSolver());
variousTestSettings.put("SimpleSolver", settings);
// Fails because SpringForce uses particle's absolute y position to calculate the force.
// Since the y position in local and distributed simulation differs,
// it also has a different effect.