Hi YiLin, I am not aware of any document. There is an AIAA paper by Mengaldo et al although this focusses on the Euler and Navier-Stokes equations. You might also have a look to see if you can get hold of the thesis of Kilian Lackhove from U Damdstadt since there may be additional information in there. Cheers, Spencer Sent from my iPhone On 6 Feb 2022, at 21:37, Paul Liu <liuyilin.liu@gmail.com> wrote: This email from liuyilin.liu@gmail.com originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address. Hi Everyone, I was just wondering if there is a paper or documentation outlining how the characteristic non-reflecting boundary condition is formulated for the LEE. I saw a glimpse of it at in the code but was wondering if there are any extra details as I am trying to understand nektar++ better. Thank you everyone YiLin Liu 403-397-3457 liuyilin.liu@gmail.com<mailto:liuyilin.liu@gmail.com> MASc Student at CML<https://cml.mech.ubc.ca/> UBC _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk https://mailman.ic.ac.uk/mailman/listinfo/nektar-users