Rotor 37 problem
Hello,
I am doing a rotor 37 simulation of a single blade passage with periodic BC using openfoam 2.2, i am not able to figure out which solver to use. Currently i m using rhoPorousMRFSimpleFoam. I am not able to get any results, negligible flow is going inside the main domain .Can anyone guide me how to do this. I read somewhere that you have to develop a compressor map by changing the back pressure. How to do that ?? rpm of rotor is = 12465 My boundary conditions are: ------------------------------------------------------------------------- p Code:
dimensions [ 1 -1 -2 0 0 0 0 ]; U Code:
dimensions [ 0 1 -1 0 0 0 0 ]; T Code:
dimensions [ 0 0 0 1 0 0 0 ]; Thanks a lot !! |
Greetings Paul and welcome to the forum!
I've gotten the private message you sent me. Quote:
Quote:
My advice: step back and take a simpler look into the problem you're trying to solve. In other words: use the strategy to divide and conquer. So, the basic questions are:
Bruno |
Hello Bruno,
Thanks for your reply The NASA rotor 37 is an isolated transonic axial compressor rotor with 36 blades. So instead of the whole rotor, i am simulating a single blade with periodic boundary conditions. So my domain consists of (inlet, outlet, hub shroud and a single blade) I have the results from some other software, i just want to validate them using openfoam using the same BC. So now any suggestions !! |
Hi Paul,
:eek: Transonic? That's a big jump, at least for me, given my level of experience on this. The best I can do is to suggest the following (and since you're using OpenFOAM 2.2):
Best regards, Bruno |
I think you might finally end up with "sonicFoam" because NASA rotor 37
is a transonic rotor and you need to consider compressibility and turbulence for that. "sonicFoam" provides these issues for you, however you need to make a decision whether you should have mesh motion or not. in this case "sonicDyMFoam" could be a try. |
Quote:
I am currently trying to solve the same problem but after a bit of research I found that the best solver is supposed to be steadyCompressibleMRFFoam from the extended edition of openfoam and using cyclicGgi boundaries |
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