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

CFX v12 adding reattachment modification to sst model

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 8, 2016, 15:30
Default
  #21
Senior Member
 
ali
Join Date: Oct 2009
Posts: 318
Rep Power: 17
alinik is on a distinguished road
Folks,

I compared v17.1 and v15.0 that I am using and saw that this option is available in the newer version.
both versions are using the same license file and thus I do not think it is a license issue. Also in both versions beta features are enabled.
Judging by the date that this conversation has started I assume there has to be a way to get around this problem in earlier versions.
I hope those people that have solved this issue in earlier versions respond and let me know how they overcame this issue. I really do not want to upgrade to v17.1 for some reasons and would like to find a solution in my own v15.0

Thanks,
Ali
alinik is offline   Reply With Quote

Old   June 9, 2016, 06:30
Default
  #22
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,731
Rep Power: 143
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
If Far is correct and Menter does not think the model is physically correct then ANSYS may well have removed it entirely from the software.
ghorrocks is offline   Reply With Quote

Old   June 9, 2016, 12:17
Default
  #23
Senior Member
 
ali
Join Date: Oct 2009
Posts: 318
Rep Power: 17
alinik is on a distinguished road
It is there in GUI in v17 but not in v15. I read in some other thread that this option is only available using command editor in earlier versions. The question is why I am getting that error when I try to activate it through command editor in v15.
Also if you look at the transport equation for intermittency in SST model you will see that it is not based on physics and it is something that ansys has been saying for long. It is just designed in such a way to produce acceptable results for a wide range of inputs. As long as it is working just fine then there is no problem in using it.
The question is how I can activate it?
Also if anyone has any documentation in this regard I would really appreciate it if they can share it with me. I dug in ansys documentation and theory guides but I could not find any good solid material.

Thanks,
Ali
alinik is offline   Reply With Quote

Old   June 17, 2016, 05:33
Default
  #24
Far
Super Moderator
 
Sijal
Join Date: Mar 2009
Location: Islamabad
Posts: 4,553
Blog Entries: 6
Rep Power: 54
Far has a spectacular aura aboutFar has a spectacular aura about
Send a message via Skype™ to Far
he is nice guy and usually reply

This paper discuss same model in detail, and they also quote their discussion with menter.

http://turbomachinery.asmedigitalcol...icleID=1468333

Last edited by Far; June 17, 2016 at 09:42.
Far is offline   Reply With Quote

Old   June 20, 2016, 03:56
Default
  #25
New Member
 
Join Date: Feb 2016
Posts: 22
Rep Power: 10
leasken is on a distinguished road
Quote:
Originally Posted by alinik View Post
It is there in GUI in v17 but not in v15. I read in some other thread that this option is only available using command editor in earlier versions. The question is why I am getting that error when I try to activate it through command editor in v15.
Also if you look at the transport equation for intermittency in SST model you will see that it is not based on physics and it is something that ansys has been saying for long. It is just designed in such a way to produce acceptable results for a wide range of inputs. As long as it is working just fine then there is no problem in using it.
The question is how I can activate it?
Also if anyone has any documentation in this regard I would really appreciate it if they can share it with me. I dug in ansys documentation and theory guides but I could not find any good solid material.

Thanks,
Ali
Not sure if I'm helping, but I'm using SST Re in 16.2 and my .def-file have the following lines under fluid models:

TURBULENCE MODEL:
Option = SST
REATTACHMENT MODIFICATION:
Option = Reattachment Production
END
END
leasken is offline   Reply With Quote

Old   August 31, 2016, 04:11
Default
  #26
New Member
 
Tomas
Join Date: Jun 2015
Posts: 3
Rep Power: 10
Jepice is on a distinguished road
Quote:
Originally Posted by alinik View Post
It is there in GUI in v17 but not in v15. I read in some other thread that this option is only available using command editor in earlier versions. The question is why I am getting that error when I try to activate it through command editor in v15......

Thanks,
Ali
Hi, Ali,

in my case the solution was well.... stupid Try to switch off and again switch on beta features. This helped me. I spent a lot of time finding out where the problem is like you.

Jepice
Jepice 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
Low Reynolds Number SST Model Josh CFX 41 June 4, 2023 19:00
[ICEM] Proper way to name boundaries on 2D model for use in CFX? RossFS ANSYS Meshing & Geometry 4 November 10, 2011 02:38
Low Reynolds k-epsilon model YJZ ANSYS 1 August 20, 2010 13:57
Turbulence model for CFX moving mesh songxguan CFX 7 June 28, 2009 21:05
Help: 2D model in CFX 5.5 Dejun Jing CFX 1 July 24, 2002 00:25


All times are GMT -4. The time now is 21:13.