# Considering time value in the boundary profile?

 Register Blogs Members List Search Today's Posts Mark Forums Read

 April 12, 2006, 01:43 Considering time value in the boundary profile? #1 Aibo Guest   Posts: n/a Sponsored Links I am trying to simulate fluctated wind pressure of building using cfx10.First, I have used Matlab software to generate the time history of wind velocity;then, I want to add the time history of wind velocity to the inlet boundary condition by using the boundary profile of cfx10 .To this step, the question is how can I reach this target. List the format what I have tried and failed: [Name] My Boundary [Spatial Fields] x, y , z... [Data] x[m],y[m],z[m],t[s],Velocity u[ms^-1] 1,2,1,0,1 1,2,1,0.5,2 1,2,1,1.5,0.9 ...... Need your help,thank you!

 April 13, 2006, 04:43 Re: Considering time value in the boundary profile #2 TobiasZ Guest   Posts: n/a Hi, I guess you need to setup a CEL Expression with something like Function(x,y,z,t,u)in CFX, where x,y,z,t are input and u output data. Create a User Function where to read the data of your txt file and send the data via Function(x,y,z,t,u) back to the boundary condition. I think there are some examples in the CFX manual for CEL or User Junction Box which can you help further. TobiasZ

 April 13, 2006, 07:18 Re: Considering time value in the boundary profile #3 Aibo Guest   Posts: n/a Thank you!! I will try it now!!

 April 19, 2006, 22:28 Re: Considering time value in the boundary profile #4 AIBO Guest   Posts: n/a TobiasZ,thank you for your help! I has obtained the real results with using the user cel function.

January 31, 2013, 11:46
#5
New Member

Join Date: Jan 2013
Posts: 5
Rep Power: 6
Quote:
 Originally Posted by Aibo ;75937 I am trying to simulate fluctated wind pressure of building using cfx10.First, I have used Matlab software to generate the time history of wind velocity;then, I want to add the time history of wind velocity to the inlet boundary condition by using the boundary profile of cfx10 .To this step, the question is how can I reach this target. List the format what I have tried and failed: [Name] My Boundary [Spatial Fields] x, y , z... [Data] x[m],y[m],z[m],t[s],Velocity u[ms^-1] 1,2,1,0,1 1,2,1,0.5,2 1,2,1,1.5,0.9 ...... Need your help,thank you!
Hi,Aibo.
Now,I meet the same problem with you.Can you tell me how you to solve it?
Thank you! my email : kjrzyh@126.com

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Ozgur_ FLUENT 5 August 25, 2015 04:58 Hitch8 CFX 2 April 22, 2010 13:09 Pankaj CFX 9 November 23, 2009 05:05 m9819348 OpenFOAM Running, Solving & CFD 7 October 27, 2007 00:36 Tudor Miron CFX 17 March 19, 2004 20:23