void RHSStencil::apply(FlowField& flowField, int i, int j) { flowField.getRHS().getScalar(i, j) = 1.0 / _parameters.timestep.dt * ((flowField.getFGH().getVector(i, j)[0] - flowField.getFGH().getVector(i - 1, j)[0]) / _parameters.meshsize->getDx(i, j) + (flowField.getFGH().getVector(i, j)[1] - flowField.getFGH().getVector(i, j - 1)[1]) / _parameters.meshsize->getDy(i, j)); }