OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Smooth start curve in aorta3d › Re: Smooth start curve in aorta3d April 12, 2017 at 8:53 am #2577 mathiasKeymaster This is avoid pressure waves, i.e. to obtain a consistant initial condition. There are also other ways of doing it and some papers, too. Best Mathias