CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Seperated Flow past a Spheroid

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   August 18, 2001, 10:50
Default Seperated Flow past a Spheroid
Posts: n/a
I am trying to model (using Fluent)flow past a prolate spheroid (3d Ellipse) to locate seperation lines at the aft end (masters dissertaion). I have tried both 2D and 3D models. The problem is I cannot seem to get results which show any seperation at all. I have tried all the turbulense models (RNG, Realizable, k-e), wall functions (2 zone, non-equilibrium)etc. I have put a boundary layer in too, but to no avail. I have seen results proving it can be done using CFD but it will not work for me. I have tried all types of mesh on the spheroid surface (tri-pave, quad tri-prim), but I am restricted to unstructured mesh (TGrid) in the flow domain. Has anyone any idea how to solve this problem? All suggestions greatly appreciated. Thanks.
  Reply With Quote

Old   August 19, 2001, 02:00
Default Re: Seperated Flow past a Spheroid
Chetan Kadakia
Posts: n/a
Go back to the 2d solution. Start with a simple flow past an ellipse. I'm sure there has to be seperation unless the aspect ratio is too high. Plot y+ on the surface. Try to capture the boundary layer to the log layer or the sublayer (depending on your near wall method). If this doesn't work, then write back with details of your full solution and set up.
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
flow over a cylinder urgent! kevin FLUENT 8 August 11, 2015 13:00
flow past a sphere CHEN Main CFD Forum 1 January 30, 2010 03:12
Unsteady simulation of flow past wheel Tom FLUENT 8 January 18, 2006 11:54
meshing for flow past a cylinder karthik FLUENT 1 July 15, 2005 06:17
incompressible free surface flow past cylinder vineet FLUENT 2 April 1, 2002 05:56

All times are GMT -4. The time now is 04:27.