Dear Zhicheng, You are going to have to do a physical extrusion of the mesh. The compressible solver does not have that capability. All the best, Guglielmo ________________________________ From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> on behalf of Zhicheng Wang <zhicheng_wang@brown.edu> Sent: 25 January 2025 02:04 To: nektar-users <nektar-users@imperial.ac.uk> Subject: [Nektar-users] Compressible Navier-Stokes Homogenous 1D This email from zhicheng_wang@brown.edu 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. Dear Nektar++ Users and Developers, I’m running the compressible flow past a cylinder using the Nektar++ compressible flow solver. So far the implicit time stepping method works well both in 2D and 3D. However, when I try to run 3DHomogenous1D NavierStokesImplicitCFE solver, it gives me error says v_GetLocTraceToTraceMap not coded. I wonder if I have not set the session file correctly or this implicit 1D homogenous solver has not been implemented yet ? Below is solver information, in case I have used the wrong parameters. <SOLVERINFO> <I PROPERTY="EQType" VALUE="NavierStokesImplicitCFE" /> <I PROPERTY="Projection" VALUE="DisContinuous" /> <I PROPERTY="TimeIntegrationMethod" VALUE="DIRKOrder2" /> <I PROPERTY="HOMOGENEOUS" VALUE="1D" /> <I PROPERTY="AdvectionType" VALUE="WeakDG3DHomogeneous1D" /> <I PROPERTY="DiffusionType" VALUE="LDGNS3DHomogeneous1D" /> <I PROPERTY="UpwindType" VALUE="Roe" /> <I PROPERTY="ViscosityType" VALUE="Variable" /> <I PROPERTY="EquationOfState" VALUE="IdealGas" />. <I PROPERTY="USEFFT" VALUE="FFTW" /> </SOLVERINFO> Best Regards, Zhicheng Wang