<vv> problem

I niticed a bit problem that comes out in most of the simulation I performed (SEM and DF-SEM), and that highly affect the results. The <vv> component of the Reynods tensor is suddenly almost all dissipated (as the following pictures show!)

A similar dissipation appears in <uu> and <vv> as well, but not with such impact! I though it might be due to the turbulence clipping (which, decreasing <uu>, overestimates <vv>) but it is not totally true!

Length scale limited to the wall distance


Left: DFSEM - Right: DFSEM limited to the eddy wall distance

Hybrid SEM / DFSEM

I chose a arbitrary boundary between the two methods at $ y^+=75 $. Here you are the results:

Length scale k^3/2 / eps

Without clipping to the length scale [interesting results!!]

Davidson Method

Current Tags:
create new tag
, view all tags
Topic revision: r3 - 2011-07-12 - 11:21:53 - RuggeroPoletto
Main Web
22 Jul 2018


Manchester CfdTm

Ongoing Projects


Previous Projects


Useful Links:

User Directory
Photo Wall
Upcoming Events
Add Event

Computational Fluid Dynamics and Turbulence Mechanics
@ the University of Manchester
Copyright © by the contributing authors. Unless noted otherwise, all material on this web site is the property of the contributing authors.