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 › Running the Cylinder3D Case for Higher Reynolds Numbers › Reply To: Running the Cylinder3D Case for Higher Reynolds Numbers December 1, 2021 at 3:48 pm #6208 AdrianKeymaster You should also increase the resolution in this case.