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-   -   dynamic viscosity=f(pressure) (https://www.cfd-online.com/Forums/cfx/65446-dynamic-viscosity-f-pressure.html)

hubidoo June 15, 2009 10:21

dynamic viscosity=f(pressure)
 
1 Attachment(s)
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?

ckleanth June 15, 2009 11:10

what do you want to do?

hubidoo June 15, 2009 12:12

Quote:

Originally Posted by ckleanth (Post 219350)
what do you want to do?

Calculate with a variable dynamic viscosity. Like Sutherlands Formula, just with dynamic viscosity=f(pressure)

ckleanth June 15, 2009 12:51

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


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