|
[Sponsors] |
January 4, 2010, 07:23 |
Angular momentum flux through faceZone
|
#1 |
New Member
Join Date: Apr 2009
Posts: 26
Rep Power: 17 |
I have a cylindrical geometry (see graphics) and I want to evaluate the angular momentum flux into the cylinder through the 30 ports (among other quantities) using a cylindrical coordinate system. The mesh is conforming between the two zones (red and blue).
My first attempt was to create a cyclic patch in each of the 30 ports and write a postprocessing tool based on patchIntegrate to find the angular momentum flux. This worked well formally, but it is very tedious to create the meshes in a commercial mesher in such a way that I can create the cyclic patches with createPatch (and we need a LOT of meshes). Other issues with this method is handling parallel postprocessing (see http://www.cfd-online.com/Forums/ope...-problems.html), and fundamentally I would prefer to get the angular momentum flux out during the simulation and not “postmortem”. I have now created a faceZone for each of the 30 ports (see pink on graphics) according to the advice given in http://www.cfd-online.com/Forums/ope...-problems.html. I can now use OpenFOAM-1.6.x/src/postProcessing/functionObjects/field to get information out on a faceZone. But as I understand my problem is slightly more complex than the functionality in fieldValues since I need to know the position of the individual face and multiply phi with U before integration etc. My question now is the following: What would you recommend? In some way extending the functionObjects? +Ask |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Wind turbine simulation | Saturn | CFX | 58 | July 3, 2020 01:13 |
RPM in Wind Turbine | Pankaj | CFX | 9 | November 23, 2009 04:05 |
Derivation of Momentum Equation in Integral Form | Demonwolf | Main CFD Forum | 2 | October 29, 2009 19:53 |
Replace periodic by inlet-outlet pair | lego | CFX | 3 | November 5, 2002 20:09 |
Angular momentum conservation? | Barry | Main CFD Forum | 19 | April 11, 2002 10:37 |