HI Amitvikram, I am not sure if someone else has answered this but the convective like boundary conditions proposed by Steve Dong (see attached fig 16) is supposed to be able to handle this situation. We have implemented these conditions but I am unaware if anyone has attempted to run this in this case. Cheers, Spencer. On 13 Feb 2019, at 23:53, Amitvikram Dutta <amitvdutta23@gmail.com<mailto:amitvdutta23@gmail.com>> wrote: Hi all, Is it possible to have a pressure boundary condition that guarantees inflow? I'd like to explain in more detail. I have a jet simulation where I'm attempting to simulate entrainment of the jet air from behind the jet. Unfortunately, at the boundaries at the to and bottom of the domain, where the flow should be coming into the domain, the flow instead goes out of the domain. I have set the BCs at this domain to be the same as for outlets, i.e., Zero velocity gradients and zero pressure. It was my hope that the velocities would settle to their correct value over the course of the simulation. However instead I ran into the problem just described. I'd appreciate some insight if possible. Sincerely, -- Amitvikram Dutta Graduate Research Assistant Fluid Mechanics Research Lab Multi-Physics Interaction Lab University of Waterloo _______________________________________________ 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/