Hi, I am going back over very old emails now so sorry if there was no answer to this one. It is possible to take external data and then interpolate it to a boundary field file and then run with that data. The steps are to use FieldConvert to interpolate data from pts to a field. (perhaps look at interpptsdatatofld). To do this you will likely have to extract the boundary from your mesh file using the extract module in NekMesh to get the boundary mesh file. Cheers, Spencer. On 1 Feb 2019, at 02:52, Amitvikram Dutta <amitvdutta23@gmail.com<mailto:amitvdutta23@gmail.com>> wrote: Hi all, Would it be possible to specify the inlet velocity boundary conditions of a 2D problem using a .pts file? I have a profile from my experiments that I wish to use as an inlet BC to my simulation. The user guide has an example where a file is used in combination with TIMEDEPENDENT BCs. My condition is not time varying and is essentially a 1D profile at the inflow of the domain. What would be the format of the file that I would specify? 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/