|
[Sponsors] |
January 1, 2015, 03:05 |
Viscous Sublayer thickness
|
#1 |
Senior Member
starter
Join Date: Sep 2012
Posts: 125
Rep Power: 16 |
Hi
Can anyone advise me how to determine viscous sublayer region thickness in my geometry. I am doing Fluid structure interaction for air flowing in pipes. Normally it is assumed if structural displacements are less than viscous sublayer region thickness, one way FSI is alright. I have used OpenFOAM to model LES with PISOFOAM. Kindly advise if there is any method in OpenFOAM or manual calculation that I can use. Also, please advise if it is possible to determine viscous sublayer region thickness along the whole length of the geometry i.e., if my pipe is 5m long, I would like to have displacements at each meter. Regards Imad Haqqi Last edited by sihaqqi; January 1, 2015 at 03:08. Reason: better structure |
|
January 1, 2015, 15:34 |
|
#2 |
Senior Member
anonymous
Join Date: Aug 2014
Posts: 205
Rep Power: 13 |
Get your y+ using yPlus, go to paraview and see how far is your first cell from the boundary, with that you can obtain the relationship between the yPlus and y, so you only need to multiply the y * 5 to get your viscous sublayer if I remember correctly
|
|
January 1, 2015, 18:16 |
|
#3 |
Senior Member
starter
Join Date: Sep 2012
Posts: 125
Rep Power: 16 |
Many thanks for sparing time to answer this question. I used yplus calculator to calculate first cell distance from the wall. So this means I only need to multiply that cell distance with 5. Correct?
Regards |
|
Tags |
openfoam 2.1, viscous sublayer |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Viscous sublayer thickness | Bo Busk Jensen | Main CFD Forum | 4 | April 13, 2011 02:25 |
Boundary layer/ Sublayer thickness | dave0198 | Main CFD Forum | 0 | August 7, 2010 18:29 |
viscous sublayer region (turbulent flows) | student | Main CFD Forum | 0 | June 19, 2007 10:58 |
High aspect ratio in viscous sublayer? | Marius | Main CFD Forum | 0 | December 22, 2005 09:15 |