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power law code

Posted June 12, 2012 at 01:26 by alven299

This is a very useful UDF for beginners...

Quote:
Originally Posted by Antoine
;139313
I've finally found the causes of the problem. To initialize correctly the apparent viscosity, I used the current iteration number macro N_ITER, so when it is < 1 (computation is not launched) apparent viscosity is set to a fixed value. Also, in my previous udf, I defined -k because I'm used to see a minus sign before k in the definition of the shear stress. But the apparent viscosity is positive so the minus sign is a source of error because
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