# Power law viscosity

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

 February 25, 2017, 05:26 Power law viscosity #1 New Member   Jalil ul rehman Join Date: Feb 2017 Posts: 5 Rep Power: 2 how can one enter a power law viscosity relation in Ansys Fluent

February 27, 2017, 09:11
#2
Member

ramin
Join Date: Jul 2016
Posts: 32
Rep Power: 2
Quote:
 Originally Posted by Jalil Khan how can one enter a power law viscosity relation in Ansys Fluent
Hi. Fluent has non newtonian power law viscosity model and you don't need to write a udf for it.just go to material and choose non newtonian powerlaw viscosity from viscosity tab and inter power law index (n) and K and 2 other parameters. This parameters depend on material properties. Also you can write a udf for it. Do you want write udf for it?

 February 28, 2017, 02:35 Fluent non newtonian #3 New Member   Jalil ul rehman Join Date: Feb 2017 Posts: 5 Rep Power: 2 Ok, Thanks! What is the refrence value the programme is taking to calculate drag,or lift and other values ,say for K=1,n=1.8 and some limit of viscosity. Can u help me write a progamme?

 February 28, 2017, 07:48 #4 Member   ramin Join Date: Jul 2016 Posts: 32 Rep Power: 2 Unfurtunetly, I don't know the relation between powerlaw viscosity and calculating drag or lift.

February 28, 2017, 08:38
#5
Senior Member

Kevin
Join Date: Dec 2016
Posts: 138
Rep Power: 2
Quote:
 Originally Posted by Jalil Khan Ok, Thanks! What is the refrence value the programme is taking to calculate drag,or lift and other values ,say for K=1,n=1.8 and some limit of viscosity. Can u help me write a progamme?
For post-processing, such as calculating force and moment coefficients, Fluent will use the reference values you specified in the Reference Values panel.

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Gespenster FLUENT 1 August 25, 2016 02:32 TDK FLUENT 11 July 31, 2016 06:03 John FLUENT 16 September 12, 2015 06:18 NickolasPl OpenFOAM 2 August 12, 2011 08:26 HOC Main CFD Forum 1 January 15, 2003 16:17

All times are GMT -4. The time now is 17:27.