Time average pressure in CFX Pre

Tybur · March 10, 2023, 08:22

In transient simulation I have in the midle of the domaim mass flow outlet. The mass flow is definied by simple proportional equation based on the pressure at this outlet. I defined this function using expression and areaAve(Pressure). However to improve the convergence I would like to use the time average pressure at this outlet. I am not sure how to defined it or if it is even possible. I would a appreciate any suggestions.

Thank you

ghorrocks · March 10, 2023, 20:45

Not sure if you can do this, but have a look in the documentation about time averaged results (in the output tab of CFX-Pre) and the CFX Reference guide CEL variables - you have a .trnavg modifier which might do what you want.

March 10, 2023, 08:22	Time average pressure in CFX Pre	#1
Tybur New Member Join Date: Mar 2023 Posts: 1 Rep Power: 0	In transient simulation I have in the midle of the domaim mass flow outlet. The mass flow is definied by simple proportional equation based on the pressure at this outlet. I defined this function using expression and areaAve(Pressure). However to improve the convergence I would like to use the time average pressure at this outlet. I am not sure how to defined it or if it is even possible. I would a appreciate any suggestions. Thank you

March 10, 2023, 20:45		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Not sure if you can do this, but have a look in the documentation about time averaged results (in the output tab of CFX-Pre) and the CFX Reference guide CEL variables - you have a .trnavg modifier which might do what you want. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
y+ and u+ values with low-Re RANS turbulence models: utility + testcase	florian_krause	OpenFOAM	114	August 23, 2023 05:37
[solidMechanics] Support thread for "Solid Mechanics Solvers added to OpenFOAM Extend"	bigphil	OpenFOAM CC Toolkits for Fluid-Structure Interaction	686	December 22, 2022 09:10
Fail to converge when solving with a fabricated solution	zizhou	FLUENT	0	March 22, 2021 06:33
Inconsistencies in reading .dat file during run time in new injection model	Scram_1	OpenFOAM	0	March 23, 2018 22:29
Micro Scale Pore, icoFoam	gooya_kabir	OpenFOAM Running, Solving & CFD	2	November 2, 2013 13:58