Hi Syavash, At this stage we can’t handle octree or any non-conformal meshes. There has been some work at looking at non-conformal interfaces in rotating domains – but this isn’t generalised. Meshes must be conformal and must contain only elements of type: tris, quads (2D) or tet,hex,prism (3D). Thanks, James. From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> On Behalf Of Ehsan Asgari Sent: Saturday, March 18, 2023 2:07 PM To: nektar-users <nektar-users@imperial.ac.uk> Subject: [Nektar-users] snappyHexMesh This email from eh.asgari@gmail.com<mailto:eh.asgari@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. Dear All, I was wondering if Nektar++ accepts mesh from snappyHexMesh (an OpenFOAM module) ? Kind regards syavash