Problem with two meshes in cfx

-Maxim- · December 6, 2016, 02:12

Thank you for detailed explanation, Brian. Sounds like a valid reason to use the k-epsilon model in your case. That makes me want to re-do some old cases where I had convergence problems. But those were steady-state cases where I had to do a transient simulation anyway afterwards, so I did not look into the different turbulence models any further.

Maybe if you have the time, you could write to Ansys about your case and your observations. It might help to improve their software. F. Menter is working on the SBES (Stress Blended Eddy Simulation) model these days as far as I know but he might be interested in cases where the SST model comes to its limits.
Sorry for all the off-topic talk.

Red Ember · January 17, 2017, 11:27

Well, I think it's a good idea to use ke before SST, although it requires remeshing

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Convergence problem of CFX when comparing with FLUENT with same mesh	guxin7005	CFX	8	May 22, 2014 15:13
CFX pressure in Simulations problem	nasdak	CFX	1	April 14, 2010 13:22
Problems with adding two meshes together in CFX Pre	peterputer1	CFX	2	September 23, 2009 08:08
Ansys Workbench (CFX) bucket problem	njsavage	CFX	1	April 30, 2009 09:51
Urgent Problem with Hypermesh and CFX	Luk	CFX	5	March 14, 2008 04:59

December 6, 2016, 02:12		#21
-Maxim- Senior Member Maxim Join Date: Aug 2015 Location: Germany Posts: 415 Rep Power: 13	Thank you for detailed explanation, Brian. Sounds like a valid reason to use the k-epsilon model in your case. That makes me want to re-do some old cases where I had convergence problems. But those were steady-state cases where I had to do a transient simulation anyway afterwards, so I did not look into the different turbulence models any further. Maybe if you have the time, you could write to Ansys about your case and your observations. It might help to improve their software. F. Menter is working on the SBES (Stress Blended Eddy Simulation) model these days as far as I know but he might be interested in cases where the SST model comes to its limits. Sorry for all the off-topic talk.

January 17, 2017, 11:27		#22
Red Ember Member Alex Join Date: Feb 2016 Posts: 81 Rep Power: 10	Well, I think it's a good idea to use ke before SST, although it requires remeshing