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how could I write this -DEFINE_TURBULENT_VISCOSITY-udf

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Old   May 9, 2013, 07:26
Unhappy how could I write this -DEFINE_TURBULENT_VISCOSITY-udf
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as the picture shows, I divide the flow field into six part, now i want to use the udf "DEFINE_TURBULENT_VISCOSITY" to apply different Turbulent Viscosity to different part , but I don't know how to do it. if anybody could help me .

~~~~~sorry for my poor english .
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