|July 2, 2012, 06:45||
Abrupt Contraction: Meshing and Boundaries
Join Date: Jun 2012
Posts: 19Rep Power: 5
I am trying to mesh an abrtupt contraction in a pipe (3D) with solely hexahedral elements whilst still maintaining good orthogonal quality. Due to the automatic meshing system of Ansys Meshing the mesh does not behave the way I would want it to and I would need help in optimising it. I added a picture of the current mesh as a thumbnail.
Furthermore I would need assistance with the boundary conditions of the system as I do not know how to treat the contraction walls as impervious. I chose all the outer faces (except inlet and outlet) as a named selection and set the velocity in Fluent to be 0 m/s on the boundary but still after calculation the plots showed fluid gushing out of the annular face at the contraction.
Thank you for your help!
|July 3, 2012, 01:38||
Join Date: Mar 2011
Posts: 118Rep Power: 9
If you want to have more control with AM then one option is to slice your geometry into sub-parts so that the meshing tool could handle it like you expect your mesh.
You can either slice by plane of with sketches depending on the complexity of your model.
If you can attach your .agdb file so that I can have a look.
|boundary conditions, contraction|
|Thread||Thread Starter||Forum||Replies||Last Post|
|[ANSYS Meshing] Meshing cuboidal room with openings||nickdaish||ANSYS Meshing & Geometry||6||February 21, 2015 12:17|
|Wind Tunnel Contraction Modelling||josh_k||CD-adapco||1||April 18, 2011 16:21|
|Tet Meshing Vs Hex Meshing||jbritton||Main CFD Forum||3||August 6, 2010 13:15|
|meshing axisymmetric problems with irregular boundaries||mirko||OpenFOAM||6||July 20, 2010 09:17|
|Periodic Boundaries in GAMBIT!!||swetha||FLUENT||1||November 26, 2006 23:02|