Hi Both, If we could document what we would like to have for the pressure BC related to the RCR condition I could help you get this implementation sorted. Cheers, Spencer. On 26 Apr 2019, at 00:35, Kurt Sansom <kayarre@gmail.com<mailto:kayarre@gmail.com>> wrote: There isn't an RCR boundary condition implemented in the N-S solver. I attempted this a year or so ago, but got bogged down. There is a Womersley velocity boundary condition implemented. If you would like to work on contributing this feature. I would be willing to help. Regards, ~Kurt On Thu, Apr 25, 2019 at 3:41 PM zxiong@sas.upenn.edu<mailto:zxiong@sas.upenn.edu> <zxiong@sas.upenn.edu<mailto:zxiong@sas.upenn.edu>> wrote: Dear all, I am trying to do a cardiovascular simulation by using Incompressible N-S solver in Nektar++. Here I have two questions about setting boundary conditions. First, how can I set RCR(windkessel model) boundary condition if I use Incompressible N-S solver? Is there any similar input file I can find? Second, do I need to make all the variable dimensionless when I set boundary conditions? Thank you very much! Best, Zhen _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk<mailto:Nektar-users@imperial.ac.uk> https://mailman.ic.ac.uk/mailman/listinfo/nektar-users -- Kurt Sansom _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk<mailto:Nektar-users@imperial.ac.uk> https://mailman.ic.ac.uk/mailman/listinfo/nektar-users Spencer Sherwin FREng, FRAeS Head, Aerodynamics, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, s.sherwin@imperial.ac.uk<mailto:s.sherwin@imperial.ac.uk> South Kensington Campus, Phone: +44 (0)20 7594 5052 Imperial College London, Fax: +44 (0)20 7594 1974 London, SW7 2AZ, UK http://www.imperial.ac.uk/people/s.sherwin/