|August 18, 2012, 07:56||
Simulating a separation bubble on a blade
Join Date: Aug 2011
Posts: 10Rep Power: 7
I am simulating a blade with Re=210,000 and a turbulence about 2%. According to experimental data, a separation bubble should occur at about half of the blade chord but in my simulation I only get a big separation.
I am using SST for turbulence and my y+ is less than 1 (except for the leading edge).
I already run a many simulation on that case, but I don't even come close to a separation bubble.
Do you have any suggestions what could influence the bubble?
Thanks a lot.
PS: I'm not very experienced in CFD yet.
|August 19, 2012, 19:17||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 12,534Rep Power: 97
Is the separation you are looking for a laminar separation bubble? You will need the turbulence transition model to capture this.
In the Re range you quote it is quite possible it is a laminar separation bubble.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Laminar bubble separation||Gilles||CFX||1||July 24, 2008 21:57|
|Separation bubble, hypersonic compression corner||ben akih||CFX||3||December 10, 2006 17:33|
|separation bubble .....||zqnwpu||Main CFD Forum||1||November 23, 2004 14:45|
|separation bubble||Celia||Main CFD Forum||0||July 10, 2004 23:17|
|separation bubble||Celia||CD-adapco||0||July 9, 2004 23:16|