CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

flow along a cylinder

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

LinkBack Thread Tools Display Modes
Old   July 14, 2003, 00:01
Default flow along a cylinder
Posts: n/a
Hi, I am trying to simulate the flow along the cylinder(flow is parallel to the axis), the ratio of radius to length is very small. Actually cylinder is moving in a free space and gas is rest. If I use radius as length scale, Re is very small (less than 100), but if cylinder length is used, Re is large (about 1e5). I first used laminar model, the heat transfer between cylinder and gas is smaller than experimental data; then I used Spalart Allmaras model, the agreement is better. But I am not fully convinced the length scale used for Re (or which model I should use). Does anyone have any insight on this?

Also, when I used turbulent model, I find the far boundary is farther than that in laminar flow. anyone have any idea about this too?

Thanks in advance for any help

  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
benchmark: flow over a circular cylinder goodegg Main CFD Forum 12 January 22, 2013 12:47
1 Was FSI for a flow over a cylinder vmlxb6 CFX 17 May 16, 2011 02:29
Moving a Cylinder in cross flow after solving Dynamics equations of motion maruthamuthu_venkatraman OpenFOAM 1 November 19, 2009 14:55
Flow over a flat plate & Flow over a cylinder cfdxue Main CFD Forum 0 November 27, 2007 00:26
Flow over a cylinder Anna Main CFD Forum 9 March 24, 2006 15:32

All times are GMT -4. The time now is 06:15.