CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

normal body motion but weird lift coefficient

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 29, 2020, 03:04
Default normal body motion but weird lift coefficient
  #1
New Member
 
Fonzzao
Join Date: Jul 2019
Posts: 13
Rep Power: 7
Panda School is on a distinguished road
Dear Foamers,

I try to use interFoam to simulate vortex-induced vibration of a circular cylinder with/without free surface.

The result for VIV without free surface and for flow arround the stationary cylinder with free surface looked good.

But the result for VIV with free surface was quite weird. The cylinder did a periodic oscillation and the drag coefficient looked ok while the lift coefficient went with weird fluctuations.

I attached the body motion and force coefficient.

Could somebody help? What could be the problem?

Best regards,
Z.F.
Attached Images
File Type: jpg data.jpg (60.3 KB, 9 views)
Panda School is offline   Reply With Quote

Reply

Tags
lift coefficient, vortex-induced vibration

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Error in Coefficient of Lift value for Porous Media with Buoyancy Tempest OpenFOAM Post-Processing 1 November 20, 2020 11:05
calculate drag coefficient for body moving in waves mo_na OpenFOAM Post-Processing 1 May 20, 2017 03:56
trying to write a UDF for rigid body motion niteshrajput Fluent UDF and Scheme Programming 4 December 17, 2014 01:29
Rigid body motion on transient fluent mrf ghost82 EnSight 4 September 6, 2014 12:24
Question about heat transfer coefficient setting for CFX Anna Tian CFX 1 June 16, 2013 07:28


All times are GMT -4. The time now is 15:20.