Hello, I would like to change viscosity all the 1000 iterations by UDF but I do not know the variable of the number iteration. Can you show me the variable of the number iterations. Thank you!

you can define a global variable

int It_Number=0;

and in a define_adjust function to increase this variable. Thus you can verify the number of iterations and change the viscosity value.

[azores]

Hello,

I read this post and I would like to do the same. Update a mass source value each 100 iterations. I have an udf that call a fortran program that calculates the mass source value. So, to define the number of iterations, do I need a second udf? Or can I use DEFINE_ADJUST inside the DEFINE_SOURCE?

Thanks in advance!