CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > SU2

Turbulent flow around a square cylinder

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 1, 2017, 07:44
Default Turbulent flow around a square cylinder
  #1
Member
 
Paul Zhang
Join Date: Feb 2011
Posts: 44
Rep Power: 15
paulzhang is on a distinguished road
Hello,

I am running the square cylinder testing case using the mesh given in the built-in folder of SU2 and try to reproduce the solution of the square cylinder case in the AIAA paper "Stanford University Unstructured (SU2): Open-source Analysis and Design Technology for Turbulent Flows". In order to do that, the free-stream conditions are modified to be as following:

MACH_NUMBER= 0.2
FREESTREAM_TEMPERATURE= 273.15

However, I got a St number value quite different from the one given in the paper.

St=fL/U=0.083839346
where f = 1/T
T = 120 * 0.0015 = 0.18
U = 66.2643
L = 1

Quite confused. Any help is appreciated.

Thanks,
Paul

Attached are the figures where I found that a period has 120 time steps.
Attached Images
File Type: png Period1.png (40.7 KB, 22 views)
File Type: png Period.png (27.8 KB, 20 views)
paulzhang is offline   Reply With Quote

Old   August 11, 2017, 10:07
Default
  #2
Super Moderator
 
Francisco Palacios
Join Date: Jan 2013
Location: Long Beach, CA
Posts: 404
Rep Power: 15
fpalacios is on a distinguished road
Hi,
My recommendation is to take a look at this paper:

https://arc.aiaa.org/doi/abs/10.2514/6.2014-2404

were you can maybe find some extra information. Another thing that you can do is to compare your results with the figure 7 in the article that you cite in case something has changed in the latest releases of SU2.

Best,
Francisco
fpalacios is offline   Reply With Quote

Old   August 14, 2017, 00:55
Default
  #3
Member
 
Paul Zhang
Join Date: Feb 2011
Posts: 44
Rep Power: 15
paulzhang is on a distinguished road
Quote:
Originally Posted by fpalacios View Post
Hi,
My recommendation is to take a look at this paper:

https://arc.aiaa.org/doi/abs/10.2514/6.2014-2404

were you can maybe find some extra information. Another thing that you can do is to compare your results with the figure 7 in the article that you cite in case something has changed in the latest releases of SU2.

Best,
Francisco
Dear Prof. Palacios,

Your reply is just in time. I realized that the SU2 code has been updated which yields a better solution.

Thank you so much for your guidance.

Best,
Paul
paulzhang is offline   Reply With Quote

Reply


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
Issues on the simulation of high-speed compressible flow within turbomachinery dowlee OpenFOAM Running, Solving & CFD 11 August 6, 2021 07:40
2D cylinder Turbulent Flow fredicenci OpenFOAM Running, Solving & CFD 13 December 5, 2017 19:10
Drag force coefficient too high for a flow past a cylinder using komega sst Scabbard OpenFOAM Running, Solving & CFD 37 March 21, 2016 17:16
flow over a cylinder urgent! kevin FLUENT 8 August 11, 2015 14:00
Laminar flow passing a square cylinder Jesper Jespersen Main CFD Forum 1 October 7, 2002 05:41


All times are GMT -4. The time now is 23:05.