Hi, How implement to Fluent material property as a function pressure?? for example: viscosity? How write udf? The same in case when viscosity is a function a temperature??

Thanks for help

Tomik.

Use the macro DEFINE_PROPERTY, one example of temperature dependent viscosity is given in the udf manual.

get the macro for pressure; calculate the viscosity and return the value;

Hook the udf at correct position.

Sujith