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Old   February 25, 2017, 05:26
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Jalil ul rehman
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how can one enter a power law viscosity relation in Ansys Fluent
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Old   February 27, 2017, 09:11
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Quote:
Originally Posted by Jalil Khan View Post
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?
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Old   February 28, 2017, 02:35
Thumbs up Fluent non newtonian
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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?
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Old   February 28, 2017, 07:48
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Unfurtunetly, I don't know the relation between powerlaw viscosity and calculating drag or lift.
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Old   February 28, 2017, 08:38
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Originally Posted by Jalil Khan View Post
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.
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