CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

flow through time

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 21, 2006, 06:53
Default flow through time
  #1
seeta
Guest
 
Posts: n/a
hi i would like to find out the flow through time for unsteady case in fluent. flow through time means" if u take fluid particle at inlet the time taken by that fluid particle to comet to out let" can any body help me out. thanx in advance

  Reply With Quote

Old   August 21, 2006, 18:57
Default Re: flow through time
  #2
Rajit
Guest
 
Posts: n/a
Hi Seeta,

If iam not mistaken you need to track the fluid particles over a period of time.

Lets imagine the velocity at the inlet is 5m/s and the length of your domain is 50m.

The flow should exit the outlet in 10 seconds typical.

so you can run your transient simulation for 10 seconds and track the fluid particels at various time intervals.

Hope these are helpful.

Regards Rajit
  Reply With Quote

Old   August 24, 2006, 05:18
Default Re: flow through time
  #3
seeta
Guest
 
Posts: n/a
hi rajit, in flow domain if we have any obstacles , suppose if we have a wall mounted cube in a channel, in this case we should not take this is as flwo through time. is nt it. becoz flow is affected by the cube. in this case how can we found out. what i want to ask about resedence time . whether flow through time and residence time are same or not. thanks a lot for helping me.
  Reply With Quote

Old   August 25, 2006, 00:47
Default Re: flow through time
  #4
Rajit
Guest
 
Posts: n/a
Hi seeta,

If you draw a pathline the particles might intercept its own trajectory because of the cube in the flow.

So certain fluid particles might take more time to leave the domain than the other.

Hope this answers your question.

Regards Rajit
  Reply With Quote

Old   August 25, 2006, 04:49
Default Re: flow through time
  #5
seeta
Guest
 
Posts: n/a
hi rajit, thnak u very much. k do u know how to find out residence time in fluent. i need clear idea of recidence time. and step by step procedure for that.
  Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
PostChannel maka OpenFOAM Post-Processing 5 July 22, 2009 09:15
air bubble is disappear increasing time using vof xujjun CFX 9 June 9, 2009 07:59
XY Plot vs Flow time HAR FLUENT 3 June 16, 2006 01:25
Physical Reason for stability of Implicit Schemes? radhakrishnan Main CFD Forum 25 December 7, 2000 16:25


All times are GMT -4. The time now is 02:11.