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

Rev: Can Fluent 6.0.20 predict this problem right?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 5, 2003, 09:09
Default Rev: Can Fluent 6.0.20 predict this problem right?
  #1
Yazid Bindar
Guest
 
Posts: n/a
Dear All Fluent Users?

I would like to invite the Fluent Users to run the following 2D problem on FLUENT 6.0.20 (6's). After you get the result, you post it your comment in this user discussion group or you and me can discuss it personally. Here is the problem?

|--------------------------------| | f | d| | g |--------------------------------|--------------| b| | | |--------------------------------|--------------| a| | | |--------------------------------|--------------| c| | | |--------------------------------|--------------| e| | | | |--------------------------------|

Lengths of edges

a = 0.1 m (Inlet 1): Velocity Inlet

b = 0.15 m (Inlet 2): Velocity Inlet

c = 0.15 m (Inlet 3) : Velocity Inlet

f = 12 m (wall edges)

g = 3 m (wall edges)

d = 0.96 m (wall edges)

e = 0.96 m (wall edges) Boundry conditions

U (Inlet 1) = 17 m/s (normal to the edge)

U (Inlet 2) = 2 m/s (normal to the edge)

U (Inlet 3) = 2 m/s (normal to the edge)

Models: Flows only with Standard k & epsilon

I used turbulent kinetic energi intensity 6 % and hydrodimanic diameter (0.1 m, 0.15 m and 0.15 m)

I run it and I got the solution. I would like you to try it and we discuss the result. PLEASE DO IT with FLUENT 6. I did it with Fluent 6.0.20.

Good Luck

Yazid Bindar Chemical Engineering Dept., ITB, Bandung, Indonesia

  Reply With Quote

Old   March 5, 2003, 09:16
Default Re: Rev: Can Fluent 6.0.20 predict this problem ri
  #2
Yazid Bindar
Guest
 
Posts: n/a
Dear All

I am very sorry, the geometry description does not appear right as I type it using the post message window. I do not know how to make it right.

Yazid Bindar
  Reply With Quote

Old   March 5, 2003, 10:47
Default Re: Rev: Can Fluent 6.0.20 predict this problem ri
  #3
ff
Guest
 
Posts: n/a
Why don't you try solve problem with your fluent support.

Regards, ff
  Reply With Quote

Old   March 5, 2003, 13:57
Default To paste a text figure
  #4
Murali
Guest
 
Posts: n/a
<font face = "courier new">Yazid:

the way to produce the text here as you have it in the diagram is to add the html tag "pre". DO this:

(1) Type <*pre> (without the star)
(2) Copy paste your figure in this text box
(3) Type <*/pre> (wihtout the star) followed by the figure.

The figure would appear as you wanted. Eg:



* *
* *
**



Murali </font>
  Reply With Quote

Old   March 5, 2003, 22:06
Default Re: Rev: Can Fluent 6.0.20 predict this problem ri
  #5
Yazid Bindar
Guest
 
Posts: n/a
Dear Mr. FF

I got the results already. The results can be questioned and said to be "wrong'?

Regard Yazid Bindar
  Reply With Quote

Old   March 6, 2003, 04:09
Default Re: Rev: Can Fluent 6.0.20 predict this problem ri
  #6
ff
Guest
 
Posts: n/a
Hi,

Did you try double precison 2D software.

Is your mesh fine enough in high gradients regions.

Check Report->Reference Values... for Depth and then corect your hydraulic diameter in velocity inlet panel.

From your post I cant't see model geometry but for mixing two fluid streams of diferent velocities maybe mixing length turbulece model will give beter results.

Hope this will corect results.

Regards, ff
  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
fluent parallel problem in win7 x64 system dunga82 FLUENT 8 April 19, 2012 20:23
fluent convergence problem josip76 FLUENT 0 May 26, 2011 20:08
[ICEM] [FLUENT] 2D Geometry problem when exporting to Fluent - Unwanted walls MikeTichondrius ANSYS Meshing & Geometry 1 February 9, 2011 14:31
Fluent boundary conditions problem bobo FLUENT 2 July 3, 2009 06:28
Problem about Fluent on Linux hbinma FLUENT 3 July 6, 2008 10:49


All times are GMT -4. The time now is 16:05.