} else {
turnGridForceOff();
}
poisolver = settings.getPoissonSolver();
interpolation = new LocalInterpolation(
settings.getInterpolator(), settings.getParticleIterator());
particleGridInitializer.initialize(interpolation, poisolver, particles, grid);
detector = settings.getCollisionDetector();
collisionalgorithm = settings.getCollisionAlgorithm();