CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

Drag levels double after switching to transient

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 17, 2013, 14:56
Unhappy Drag levels double after switching to transient
  #1
Member
 
Join Date: Aug 2011
Posts: 54
Rep Power: 6
MachZero is on a distinguished road
I am encountering a problem where I am calculating drag over a somewhat bluff body. There is separated flow in the region behind the object and vortex shedding ensues. When I simulate this in steady state mode, the drag oscillated due to the shedding but I get an average close to experiment. When I switch to transient after I start calculated drag still oscillates but the magnitude of average deaf roughly doubles. Anyone seen this before? We can't figure this out on my end
MachZero is offline   Reply With Quote

Reply

Tags
drag coefficient, steady and unsteady state, transient analysis

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
Parallel User Defined Real Gas Model aeroman FLUENT 4 July 1, 2015 06:09
Continuing User Defined Real Gas Model issues aeroman FLUENT 5 May 1, 2015 02:57
New densitybased solver AeroFoam giulio_romanelli OpenFOAM Running, Solving & CFD 39 October 8, 2013 02:37
Missing math.h header Travis FLUENT 4 January 15, 2009 12:48
REAL GAS UDF brian FLUENT 6 September 11, 2006 08:23


All times are GMT -4. The time now is 11:19.