CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Please Help me out.

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

LinkBack Thread Tools Display Modes
Old   December 14, 2006, 13:00
Default Please Help me out.
Posts: n/a
The real geometry of the fluidized bed is cylindrical 3D riser. The gas phase enters fromthe bottom, and the solid phase enters from one side-inlet near the bottom.

Now I want to approximate it as 2-D riser. How should I do it? Please give me some ideas.

  Reply With Quote

Old   December 14, 2006, 23:37
Default Re: Please Help me out.
Posts: n/a
Since the solid phase inlet cannot be compressed to a 2d axisymmetric inlet, the approximation you will need to make is to think of it as an annular inlet. Then you need to try to match the area of the annular inlet to the original area of the inlet. However keep in minda that you are no longer modeling the inlet as coming from a particular side any more. So my advice is stick to 3d

  Reply With Quote

Old   December 15, 2006, 10:49
Default Re: Please Help me out.
Posts: n/a
I knew that 3d is better. However, I would like to know how to simply it into 2D given solid mass flux (kg/m2 s). I mean the stratgy.

For the case of writing own CFD source, the 2D simplication will be very helpful in the intial test. Therefore, what are the basic principles for implementing this kind of conversion or simplification (3D into 2D?

One literature example of converting 3D to 2D is (Benyahia et al. Powder Technology 2000,112:24"33). But they did not mention clearly the simplication prinples and the consequence of violating the nonsymmetric nature?

Please make comment on this paper. Thanks.

  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

All times are GMT -4. The time now is 11:52.