udf for flow behaviour of dissimilar materials in friction stir welding process

rohan@123 · March 12, 2020, 07:45

Hello,
I am using ANSYS Fluent and facing difficulty on how to write udf for visualizing the material flow behaviour in dissimilar materials in fsw process.

N.B. The udf should be dependent on temperature, strain rate and follows Zener hollowman equation.

vinerm · March 12, 2020, 08:45

The objective of CFD is to predict the flow of fluids, dissimilar or not, based on the first principles. Zener-Holloman is just a parameter defining a constitutive relation between temperature and strain rate. Though this constitutive relation can be used in a CFD simulation, it does not really make much sense to use it.

March 12, 2020, 07:45	udf for flow behaviour of dissimilar materials in friction stir welding process	#1
rohan@123 New Member Rohan Join Date: Mar 2020 Posts: 24 Rep Power: 6	Hello, I am using ANSYS Fluent and facing difficulty on how to write udf for visualizing the material flow behaviour in dissimilar materials in fsw process. N.B. The udf should be dependent on temperature, strain rate and follows Zener hollowman equation.

March 12, 2020, 08:45	Fluid Flow	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	The objective of CFD is to predict the flow of fluids, dissimilar or not, based on the first principles. Zener-Holloman is just a parameter defining a constitutive relation between temperature and strain rate. Though this constitutive relation can be used in a CFD simulation, it does not really make much sense to use it. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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