CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

How to give varying inlet mass flow with respect to time

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 29, 2014, 11:55
Default How to give varying inlet mass flow with respect to time
  #1
New Member
 
ok
Join Date: Dec 2013
Posts: 9
Rep Power: 12
vallarasu is on a distinguished road
Hi guys I'm simulating exhaust manifold.. My interest is to find temperature on the manifold surface.. I have inlet mass flow from the engine with respect to time.. How can I give varrying mass flow with respect to time in Cfx Pre? Thanks in advance
vallarasu is offline   Reply With Quote

Old   May 2, 2014, 20:43
Default
  #2
Senior Member
 
Erik
Join Date: Feb 2011
Location: Earth (Land portion)
Posts: 1,166
Rep Power: 23
evcelica is on a distinguished road
There are many ways to do this. "User function" is one (you can import a .txt file of two columns.
evcelica is offline   Reply With Quote

Old   May 3, 2014, 13:17
Default
  #3
New Member
 
ok
Join Date: Dec 2013
Posts: 9
Rep Power: 12
vallarasu is on a distinguished road
Actually right now im use that. txt method only.. I want to make that periodic.. How can I do that
vallarasu is offline   Reply With Quote

Old   May 4, 2014, 09:32
Default
  #4
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,665
Rep Power: 143
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
Use the CEL function "mod" to find where you are in the current cycle. Then use that variable as a look-up function. This will make the function periodic in time.
ghorrocks is offline   Reply With Quote

Old   May 6, 2014, 01:13
Default
  #5
New Member
 
ok
Join Date: Dec 2013
Posts: 9
Rep Power: 12
vallarasu is on a distinguished road
Thanks it works
vallarasu is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Multiple floating objects CKH OpenFOAM Running, Solving & CFD 14 February 20, 2019 10:08
mixerVesselAMI2D's mass is not balancing sharonyue OpenFOAM Running, Solving & CFD 6 June 10, 2013 10:34
Species mass flow inlet lorenz FLUENT 3 March 15, 2012 08:26
Orifice Plate with a fully developed flow - Problems with convergence jonmec OpenFOAM Running, Solving & CFD 3 July 28, 2011 06:24
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 10:11


All times are GMT -4. The time now is 05:17.