Quick help on the Hoyas and Jimenez Channel (Re_tau = 2000)!
Hi Guys,
I have to ask this any help would be great! I am looking to calculate the invariant map III-II for a RANS against the DNS data here: http://torroja.dmt.upm.es/channels/d...es/Re2000.prof however I need the Reynold's stress. Unfortunately I am unsure as to how to calculate this from the available data (the headers have confused me! <- annoyed in myself!) Best wishes, Jack |
The Reynolds stresses in the file are:
u'+, v'+, w'+, uv'+, uw'+ and vw'+. A simple plot of these quantities will certify this. |
Hi, just incase anyone else has this question they are the RMS (root mean square) values of u_i u_j, called the turbulence intensities by the authors (but intensity is typically divided by U) - so to get the Reynold's stresses simply square the values
ps. sbaffini - I thought they were Reynold's stresses at first too! :cool: |
That's how you will more probably find them in any DNS database (all the ones i know). I tought you were unsure about the colums to pick up
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