|June 6, 2014, 12:19||
initial condition for k and epsilon for frozen rotor case.
Join Date: May 2013
Posts: 118Rep Power: 4
I'm trying to simulate a fan inside channel, using MRF source terms and simpleFoam.
I'm looking for help how to calculate values of k and epsilon for a wall bounded flow of such type of case.
I look into literature, but I was able to find correlation only for free-stream flows, or bounded flows with constant section.
One thing I have doubt is: in my case, I have many sections for each channel, and I don't have a free stream velocity as it changes according to section's change.
How can I set proper initial condition for k and epsilon?
I'm a bit confused and I would like to have a little help to clarify myself.
Thanks a lot.
|June 12, 2014, 05:38||
Join Date: May 2014
Posts: 12Rep Power: 3
Im not sure if my answer is what you are looking for. I think i would first calculate the values with the "ordinary" formula for k and epsilon:
You can try to change I_U (turbulence intensity). Im sure there is a description in the wiki here as well.
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