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 › Smooth start curve in aorta3d › Re: Smooth start curve in aorta3d April 12, 2017 at 9:46 am #2580 mathiasKeymaster In the simulation you need to set the e.g. the velocity in lattice units. Best Mathias