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 1, 2023 at 8:36 pm #7100 mathiasKeymaster Did you set the values in lattice units? The unitConverter can help you here.