# Initial Values for Turbulence Coefficients **URL:** \ **Category:** Fluid Flow / CFD\ **Created:** [June 3, 2016, 9:19pm UTC](https://www.simscale.com/forum/t/initial-values-for-turbulence-coefficients/25950 "2016-06-03T21:19:17Z")\ **Posts on this page:** 1\ **Showing post:** 7
**Author:** ![fastwayjim](https://www.simscale.com/forum/user_avatar/www.simscale.com/fastwayjim/32/68251_2.png) [@fastwayjim](https://www.simscale.com/forum/u/fastwayjim)\ **Post date:** [August 5, 2016, 3:50am UTC](https://www.simscale.com/forum/t/initial-values-for-turbulence-coefficients/25950/7 "2016-08-05T03:50:17Z")
+1 on the mesh. How far along does the analysis get before it diverges? Since (I assume) it is a transient analysis, try to view the results just prior to divergence. Look for signs of oscillation, unnaturally high gradients near BC’s/walls, mesh dependence. Also, perhaps try a K-e model first, as it is generally more stable than the K-W. According to [SST k-omega model -- CFD-Wiki, the free CFD reference](http://www.cfd-online.com/Wiki/SST_k-omega_model), K-e is used in the free stream, and K-w is used in the boundary layer. So if you can get it to converge with the K-e turb model, then you know your issue is in the boundary layer. At that point, investigate the mesh near the walls… --- _[View the full topic](https://www.simscale.com/forum/t/initial-values-for-turbulence-coefficients/25950)._