User CEL Function and CFD Post

chastain · November 21, 2011, 14:13

In CFX-Pre, I have defined an expression that calls a user cel function (FORTRAN). I am using this user cel function to quantify the spray angle in a continuous-continuous multiphase water nozzle analysis (water sprayed into air). I have monitored the output of this function during the steady state solution and the final calculated angle is reasonable. This is all great but when I go to CFD Post, my user cel function is not defined.

I need to have access to the output of the user cel function, the spray angle, as a Workbench Output Parameter.

How does one make CFD Post recognize user cel functions? Any work-arounds?

stumpy · November 21, 2011, 15:02

You need to create an algebraic Additional Variable in CFX-Pre and assign its value as the output from the User CEL Function. The Additional Variable will be available in CFD-Post.

chastain · November 21, 2011, 17:40

worked like a charm!!

chastain · November 21, 2011, 17:40

Many thanks, stumpy!!!

Sujan Dutta · September 24, 2013, 13:58

Hi John and Stumpy,

Right now I am playing with "Chapter 19: Air Conditioning Simulation" where user subroutine TStat_Control.F is used. Say, I want to see the TSET in CFD post which is defined in user subroutine as TSET = RET(1:NLOC,1) (i.e. an output from subroutine). I figured out that I need to declare algebraic additional variable and I need to define Add.var.value. Can you please let me know how to define Add.var.value? Note that I defined Add.var.value = Thermostat Function (T) but it gives error.

Your help is highly appreciated

November 21, 2011, 14:13	User CEL Function and CFD Post	#1
chastain New Member John Chastain Join Date: Nov 2011 Posts: 3 Rep Power: 14	In CFX-Pre, I have defined an expression that calls a user cel function (FORTRAN). I am using this user cel function to quantify the spray angle in a continuous-continuous multiphase water nozzle analysis (water sprayed into air). I have monitored the output of this function during the steady state solution and the final calculated angle is reasonable. This is all great but when I go to CFD Post, my user cel function is not defined. I need to have access to the output of the user cel function, the spray angle, as a Workbench Output Parameter. How does one make CFD Post recognize user cel functions? Any work-arounds? __________________ John Chastain Analytical Engineer Techtronic Industries NA, Inc.

November 21, 2011, 15:02		#2
stumpy Senior Member Join Date: Apr 2009 Posts: 531 Rep Power: 21	You need to create an algebraic Additional Variable in CFX-Pre and assign its value as the output from the User CEL Function. The Additional Variable will be available in CFD-Post. chastain likes this.

November 21, 2011, 17:40		#3
chastain New Member John Chastain Join Date: Nov 2011 Posts: 3 Rep Power: 14	worked like a charm!! __________________ John Chastain Analytical Engineer Techtronic Industries NA, Inc.

November 21, 2011, 17:40		#4
chastain New Member John Chastain Join Date: Nov 2011 Posts: 3 Rep Power: 14	Many thanks, stumpy!!! __________________ John Chastain Analytical Engineer Techtronic Industries NA, Inc.

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September 24, 2013, 13:58		#5
Sujan Dutta New Member Join Date: Jul 2013 Posts: 2 Rep Power: 0	Hi John and Stumpy, Right now I am playing with "Chapter 19: Air Conditioning Simulation" where user subroutine TStat_Control.F is used. Say, I want to see the TSET in CFD post which is defined in user subroutine as TSET = RET(1:NLOC,1) (i.e. an output from subroutine). I figured out that I need to declare algebraic additional variable and I need to define Add.var.value. Can you please let me know how to define Add.var.value? Note that I defined Add.var.value = Thermostat Function (T) but it gives error. Your help is highly appreciated