Can CFX user function be used to extract wall pressure and face element area?

dhxlxz · July 19, 2009, 09:35

Hi all:
I am now doing some work about FSI. I want to extract the wall element area and its cooresponding static pressure. Can user fuction
be used to do this work ?
Thank you for your attention!!

ghorrocks · July 20, 2009, 03:16

Forget fortran. You can easily do this in CEL. Read the CFX documentation on CEL Expression language.

Glenn Horrocks

dhxlxz · July 20, 2009, 04:42

Hi , thank you very much for replying this topic. I want to extract the coordinate, area and pressure of all the vertices of a wall boundary. Is the CEL capable to do this work ?
Thank you !

ghorrocks · July 20, 2009, 19:44

Hi,

Why do you want the coordinates, area and pressure of all vertices?

Glenn Horrocks

dhxlxz · July 20, 2009, 23:32

Hi,
In case that all the coordinates, areas and pressure of a wall boundary are exported, they can be used to calculate loads. Then the loads will be assert on a structure to calculate its deformation.
Thank you for your attention

ghorrocks · July 20, 2009, 23:36

Hi,

Sounds like a standard FSI model. No need to do anything like fortran to export nodes. Just look in the tutorials for example FSI simulations.

Glenn

July 19, 2009, 09:35	Can CFX user function be used to extract wall pressure and face element area?	#1
dhxlxz New Member Join Date: Jul 2009 Posts: 18 Rep Power: 17	Hi all: I am now doing some work about FSI. I want to extract the wall element area and its cooresponding static pressure. Can user fuction be used to do this work ? Thank you for your attention!!

July 20, 2009, 04:42	what about the area and pressure of vertices "	#3
dhxlxz New Member Join Date: Jul 2009 Posts: 18 Rep Power: 17	Hi , thank you very much for replying this topic. I want to extract the coordinate, area and pressure of all the vertices of a wall boundary. Is the CEL capable to do this work ? Thank you !

July 20, 2009, 23:32	The coordinates and force act as loads	#5
dhxlxz New Member Join Date: Jul 2009 Posts: 18 Rep Power: 17	Hi, In case that all the coordinates, areas and pressure of a wall boundary are exported, they can be used to calculate loads. Then the loads will be assert on a structure to calculate its deformation. Thank you for your attention

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to read pressure at discrete points	paka	OpenFOAM	16	April 28, 2020 08:26
boundary pressure value at the face open to atmosp	Gaurav Mehra	FLUENT	0	April 21, 2008 10:50
UDF to monitor minimum pressure on the wall	Arvind Jayaprakash	FLUENT	0	September 20, 2007 12:53
Neumann pressure BC and velocity field	Antech	Main CFD Forum	0	April 25, 2006 03:15
what the result is negatif pressure at inlet	chong chee nan	FLUENT	0	December 29, 2001 06:13

July 20, 2009, 03:16		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,850 Rep Power: 144	Forget fortran. You can easily do this in CEL. Read the CFX documentation on CEL Expression language. Glenn Horrocks

July 20, 2009, 19:44		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,850 Rep Power: 144	Hi, Why do you want the coordinates, area and pressure of all vertices? Glenn Horrocks

July 20, 2009, 23:36		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,850 Rep Power: 144	Hi, Sounds like a standard FSI model. No need to do anything like fortran to export nodes. Just look in the tutorials for example FSI simulations. Glenn