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

dynamic viscosity=f(pressure)

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 15, 2009, 10:21
Default dynamic viscosity=f(pressure)
  #1
New Member
 
Eric
Join Date: May 2009
Posts: 9
Rep Power: 7
hubidoo is on a distinguished road
Hey,

there is a relationship between the dynamic viscosity and the pressure (see pic). Does anyone know, how to set up in CFX 11.0?
Attached Images
File Type: jpg Unbenannt.JPG (2.2 KB, 10 views)
hubidoo is offline   Reply With Quote

Old   June 15, 2009, 11:10
Default
  #2
Senior Member
 
ckleanth's Avatar
 
George
Join Date: Mar 2009
Location: Birmingham, UK
Posts: 257
Rep Power: 8
ckleanth is on a distinguished road
what do you want to do?
__________________
Top 4 tips
1. Knowledge is everything and Ignorance is dangerous.
2. Understand your limitations and try to eliminate them.
3. Get yerself a bike and hoon the chuffer. You will soon learn why dogs like to hang their heads out the car window.
4. Please before asking any questions on how to run simulations in CFX, go though all the tutorials
ckleanth is offline   Reply With Quote

Old   June 15, 2009, 12:12
Default
  #3
New Member
 
Eric
Join Date: May 2009
Posts: 9
Rep Power: 7
hubidoo is on a distinguished road
Quote:
Originally Posted by ckleanth View Post
what do you want to do?
Calculate with a variable dynamic viscosity. Like Sutherlands Formula, just with dynamic viscosity=f(pressure)
hubidoo is offline   Reply With Quote

Old   June 15, 2009, 12:51
Default
  #4
Senior Member
 
ckleanth's Avatar
 
George
Join Date: Mar 2009
Location: Birmingham, UK
Posts: 257
Rep Power: 8
ckleanth is on a distinguished road
you can define a cel function for dynamic viscosity but CFX doesent like that very much.

you have a number models to chose for non newtonian fluids like the
Sutherlands Formula, Bingham, Bird Carreau, Herschel Bulkley, etc

ask your ANSYS representative for examples
__________________
Top 4 tips
1. Knowledge is everything and Ignorance is dangerous.
2. Understand your limitations and try to eliminate them.
3. Get yerself a bike and hoon the chuffer. You will soon learn why dogs like to hang their heads out the car window.
4. Please before asking any questions on how to run simulations in CFX, go though all the tutorials
ckleanth is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Regarding Negative volume detected in Dynamic mesh Vinay Morabad FLUENT 8 November 27, 2011 08:01
Dynamic Mesh Problem. Tom Clark FLUENT 9 July 7, 2010 07:56
Dynamic mesh + grid adapt = Crash! (Files included BillH FLUENT 4 July 24, 2007 15:31
Dynamic Meshes Cfdtoy FLUENT 2 February 6, 2004 12:14
Dynamic mesh & Multiphase Alexandre FLUENT 3 September 13, 2002 11:35


All times are GMT -4. The time now is 19:54.