Kamil, This is not really a Nektar++ issue but one which is much broader. Attached are some early notes about deriving the Womersley solution which might help and more should be available in the open literature. Regards, Spencer. On 12 May 2015, at 08:49, Kamil ÖZDEN <kamil.ozden.me@gmail.com<mailto:kamil.ozden.me@gmail.com>> wrote: Dear All, I want to learn how to generate the necessary Fourier coefficients to use in Womersley Equation for generating pulsatile inlet flow boundary condition. However, I couldn't see any detail about this issue in the user-guide I downloaded from www.nektar.info<http://www.nektar.info/>. As far as I learned these issues are detailed in the user-guide of latest version of Nektar++ downladed from git-repository. This user guide seems in the nektar/docs/user - guide folder as *.tex file. I tried to compile this file but I always get the following error. user-guide.tex error line 377: File `../../VERSION.tex' not found. \titlepage How can I reach the user-guide including information about the issues above. Regards, Kamil _______________________________________________ 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 McLaren Racing/Royal Academy of Engineering Research Chair, Professor of Computational Fluid Mechanics, Department of Aeronautics, Imperial College London South Kensington Campus London SW7 2AZ s.sherwin@imperial.ac.uk<mailto:s.sherwin@imperial.ac.uk> +44 (0) 20 759 45052