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

Sutherland viscosity CFX

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

Like Tree1Likes
  • 1 Post By Opaque

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 7, 2022, 05:00
Default Sutherland viscosity CFX
  #1
New Member
 
Join Date: Nov 2017
Posts: 22
Rep Power: 8
icem_god is on a distinguished road
I`m running axial multi-stage compressor performance curve simulation and seems like I need to use Sutherland law to get closer results to experimental data in stall and surge regions.



Since I have no experience in changing the Material Data for Ideal Gas I`m afraid to make some mistakes. So I would be glad if someone has enough experience to share it with me.


I`ve checked ANSYS Help and have found next values for Sutherland Law:


Ref. Temperature 273 K
Ref. Viscosity 1.716e-05 kg/ms
Sutherlands Constant 110.4 K
Temperature Exponent 1.5



Can anyone confirm these values?
Thanks
icem_god is offline   Reply With Quote

Old   July 7, 2022, 06:53
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,641
Rep Power: 142
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
You have not said what the fluid is!
__________________
Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.
ghorrocks is offline   Reply With Quote

Old   July 7, 2022, 07:17
Default
  #3
New Member
 
Join Date: Nov 2017
Posts: 22
Rep Power: 8
icem_god is on a distinguished road
Quote:
Originally Posted by ghorrocks View Post
You have not said what the fluid is!

sorry, of course the fluid is Air Ideal Gas
icem_god is offline   Reply With Quote

Old   July 7, 2022, 14:11
Default
  #4
Senior Member
 
Join Date: Jun 2009
Posts: 1,775
Rep Power: 31
Opaque will become famous soon enough
Quote:
Originally Posted by icem_god View Post
I`m running axial multi-stage compressor performance curve simulation and seems like I need to use Sutherland law to get closer results to experimental data in stall and surge regions.



Since I have no experience in changing the Material Data for Ideal Gas I`m afraid to make some mistakes. So I would be glad if someone has enough experience to share it with me.


I`ve checked ANSYS Help and have found next values for Sutherland Law:


Ref. Temperature 273 K
Ref. Viscosity 1.716e-05 kg/ms
Sutherlands Constant 110.4 K
Temperature Exponent 1.5



Can anyone confirm these values?
Thanks
The values are similar to the ones quoted here

http://excelcalculations.blogspot.co...lands-Law.html
icem_god likes this.
__________________
Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.
Opaque 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fluent Meshing for CFX opinions siw CFX 1 April 25, 2022 07:55
Ask for help: CFX solution error novice_han CFX 3 December 6, 2021 08:10
CFX pressure in Simulations problem nasdak CFX 1 April 14, 2010 14:22
PhD using CFX Rui CFX 9 May 28, 2007 06:59
FSI using CFX and ANSYS Bi Chang CFX 2 May 10, 2005 05:47


All times are GMT -4. The time now is 00:32.