UDF VELOCITY INLET PROFILE WITH MULTIPHASE MIXTURE (ANSYS FLUENT)

md_lidiamd_lidia Member Posts: 2


We are two undergraduate students seeking for help!!!

We are trying to simulate a laminar flux through a 3D pipe (25 cm long, 2 cm of diameter) consisting of a multiphase flux (air and water). We want to implement a UDF for the velocity inlet consisting of several time-dependent square pulses. 

In our ideal scenario, the pipe is initially full of air and water is injected from the inlet periodically (every injection is a square pulse) and the amount of water decreases with each interval.  To do so, we have written the following code, but it does not seem to work:

COULD ANYONE HELP PELASE?? HOW CAN WE SOLVE IT?

THANK YOU VERY MUCH IN ADVANCE!

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