CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Deflection observed, Why?

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

LinkBack Thread Tools Display Modes
Old   March 29, 2001, 06:51
Default Deflection observed, Why?
Posts: n/a

I'm currently trying to model the dispersion pattern of a buoyant plume rising vertically from the sea floor under the effect of currents.

I noticed that the dispersion pattern at the surface is not symmetrical about the centreline, tending to deflect to one of the symmetry plane. (my comp domain is rectangular with upstream and downstream defined as vel-inlet and p-outlet resp. The sides and top surface were defined as sym boundaries. Bottom is wall.)

Anybody knows what is the cause of the deflection, and any way of removing/improving the results? Does changing the grids help? Please help, Thanx!

Cheers JJ
  Reply With Quote

Old   March 30, 2001, 12:30
Default Re: Deflection observed, Why?
Scott W
Posts: n/a
I've seen that problem before, and I corrected it with a finer grid at the symmetry boundary.
  Reply With Quote

Old   March 31, 2001, 02:55
Default Re: Deflection observed, Why?
Posts: n/a
Hi Scott,

Thanx for the reply...really appreciate it. When u mention a finer frid at the symmetry boundary, do u mean at the symmetry face itself or the region near the symmetry plane? Should be the latter rite? May I ask also, how fine was the grid u adopted? Thanx again.

Cheers JJ
  Reply With Quote


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
help debugging Beam deflection UDF josik_1982 Fluent UDF and Scheme Programming 0 December 19, 2010 18:36
In what range should the observed order of grid convergence be? jack1980 FLUENT 0 March 9, 2010 10:59
Turbomach. Estimated and observed data discrepancy Georg CFX 1 March 13, 2009 10:47
ansys to investigate deflection of wing xuefeng Main CFD Forum 3 December 2, 2008 17:13
Source file to compute wing deflection Jerry Main CFD Forum 0 January 7, 2004 01:55

All times are GMT -4. The time now is 19:03.