Changing Pressure-inlet to Wall for Inlet valve (from UDF and Scheme)

esco_rep · March 28, 2017, 19:42

Hi All,

I'm simulating a simple 'valve bc' to allow a tube to purge after exhausting its high pressure gas. I have used a execute on demand UDF and scheme file which allows the switch between a wall and a pressure inlet once the pressure inside the tube gets below a desired pressure.

When i run the simulation I get a segmentation fault the iteration after the wall switches to pressure inlet. When i call the files/macros manually I have npo issue and it runs fine. Likewise if i continue to run the case after the fault it works as desired.

I am a little stumped as to why, so if someone can shed some light i would appreciate it!

peace

esco_rep · March 28, 2017, 21:21

Solving my own question...make sure the updates are set to the same interval as you call the udf/scheme. Always love a simple answer.lol

March 28, 2017, 19:42	Changing Pressure-inlet to Wall for Inlet valve (from UDF and Scheme)	#1
esco_rep New Member steve Join Date: Feb 2015 Posts: 4 Rep Power: 11	Hi All, I'm simulating a simple 'valve bc' to allow a tube to purge after exhausting its high pressure gas. I have used a execute on demand UDF and scheme file which allows the switch between a wall and a pressure inlet once the pressure inside the tube gets below a desired pressure. When i run the simulation I get a segmentation fault the iteration after the wall switches to pressure inlet. When i call the files/macros manually I have npo issue and it runs fine. Likewise if i continue to run the case after the fault it works as desired. I am a little stumped as to why, so if someone can shed some light i would appreciate it! peace

March 28, 2017, 21:21		#2
esco_rep New Member steve Join Date: Feb 2015 Posts: 4 Rep Power: 11	Solving my own question...make sure the updates are set to the same interval as you call the udf/scheme. Always love a simple answer.lol chaitanyaarige likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Is it possible? Changing BC from wall to pressure-outlet with an UDF trigger	jayemes	Fluent UDF and Scheme Programming	12	October 5, 2018 12:40
Accessing wall clock time from Scheme or UDF	Angelo Sozzi	FLUENT	2	February 23, 2018 05:03
changing scheme variable with UDF?	Wagemakers	FLUENT	17	September 30, 2015 14:34
Calling zone name, zone id and total pressure from Fluent scheme to UDF	kuldip	Fluent UDF and Scheme Programming	2	October 6, 2014 00:23
How to combine UDF and Scheme?	ali hemmati	Fluent UDF and Scheme Programming	3	March 19, 2011 14:45