boundary conditions for p, U, omega, k and nut for an "internal wall" of a mesh
Hello, FOAM community,
I am running a simulation over a compressor blade to read laminar to turbulent transition phenomenon over its surface. I imported a case (.cas) file from Fluent using 'fluentMeshToFoam' because the case file is 2D and has an internal wall. I followed the instructions from here: http://openfoamwiki.net/index.php/Ho...internal_walls I hope I have followed the instruction with 100% accuracy because there is a possibility that I made some mistake as not every step is mentioned for my typical case. Anyhow, the <checkMesh -allTopology -allGeometry> command gives OK result. After I split the internal wall (part_3-surface_body) into two new surfaces (wall_for_internal_Purn_1 and wall_for_internal_Purn_2) and ran the simulation over the mesh, I have very weird result because I used slip boundary conditions for all the parameters on the two new walls (wall_for_internal_Purn_1 and wall_for_internal_Purn_2). Please check the velocity distribution in the attached photo: https://drive.google.com/open?id=1Vg...Egfl-M-6EWAmi9 Now, my question is what boundary conditions should I use for these two new walls for the parameters p, U, k, omega and nut in such a way that solver feels like these walls don't exist there and the fluid flows across these walls without any interference. For a quick reference of where the internal wall is, see this photo where the internal wall is broken into two parts and shown in yellow line: https://drive.google.com/open?id=1L0...w6pKIU4xjXpd8c https://drive.google.com/open?id=1L0...w6pKIU4xjXpd8c To avoid any confusion and misunderstanding, I am attaching my whole case directory at the current stage in zipped form. I am using KDmodel as a RASModel but you may use the standard k-Omega model. https://drive.google.com/open?id=14D...EcjX6gW5tj_sDH I appreciate the time you are putting to solve/read this problem. Thank you. Purn P. https://drive.google.com/open?id=1Vg...Egfl-M-6EWAmi9 |
Solution
Hello,
I solved the above problem by this command: Code:
stitchMesh -overwrite -perfect <master_patch> <slave_patch> Thank you for reading my question. :) |
All times are GMT -4. The time now is 12:43. |