Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › OpenLB › General Topics › Problem with defining linear temprature in RayleighBernard2D example › Reply To: Problem with defining linear temprature in RayleighBernard2D example January 3, 2023 at 7:42 pm #7115 mathiasKeymaster What if you half dx and quarter dt? Does it get smaller?