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

VIV; Relation between CL and stiffness of the cylinder.

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 5, 2015, 08:22
Default VIV; Relation between CL and stiffness of the cylinder.
  #1
New Member
 
Join Date: Sep 2015
Posts: 2
Rep Power: 0
lazze12 is on a distinguished road
Hello!

I am doing a VIV investigation on a square cylinder in ANSYS Fluent and Im trying to replicate the results from this article;

http://scitation.aip.org/content/aip...1063/1.4792351

But so far without any luck. A recent test showed that the lift coefficient changed with changed stiffness of the cylinder which feels strange?

My UDF looks like follows:

#include "udf.h"


DEFINE_SDOF_PROPERTIES(sdof_props,prop,dt,time,dti me)
{
real cg;
real k = 118.435;
cg = DT_CG(dt)[1];
prop[SDOF_MASS] = 3;
prop[SDOF_LOAD_F_Y] = -k*cg;
prop[SDOF_ZERO_TRANS_X] = TRUE;
prop[SDOF_ZERO_ROT_X] = TRUE;
prop[SDOF_ZERO_ROT_Y] = TRUE;
}

The lift coefficient should be indepedent of the stiffness, k, right?

Thanks in advance
lazze12 is offline   Reply With Quote

Reply

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



All times are GMT -4. The time now is 06:37.