Can I use UDF to input a parameter which is related to the result of last step? -- CFD Online Discussion Forums

January 31, 2016, 21:17	Can I use UDF to input a parameter which is related to the result of last step?	#1
bagecy New Member Yi Chen Join Date: Dec 2012 Posts: 1 Rep Power: 0	Hello, I am calculating the hydraulic characteristics of a pump, which gives the inlet pressure and mass flow rate( of gas and water). However, I can only set mass flow inlet and pressure outlet in FLUENT. So I assumed the pressure at its outlet, and calculated its inlet pressure. But in this way, it take too long adjusting the pressure outlet in FLUENT to make the inlet pressure close to the given value. Since I have never used UDF before, I am wondering if I can use UDF to to automatically adjust the outlet pressure by referring to the inlet pressure calculated in last step, like outer iteration. Any suggestion is appreciated. Thanks a lot! Paul

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