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

how to set particles at bottom in a fluidized bed

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 9, 2013, 02:39
Default how to set particles at bottom in a fluidized bed
  #1
New Member
 
bw
Join Date: May 2013
Posts: 6
Rep Power: 3
bweicc is on a distinguished road
Hello

I am simulating a gas-solid flow in a fluidized bed with Eulerian-Eulerian mixture model. I hope the particles are set at the bottom of the verticle flow field in initiation, but do not know how to do that. I just know how to set the volume ratio of the 2 phases, then the solid partcles are distributed in the whole region evenly.

Thank you in advance!

B
bweicc is offline   Reply With Quote

Old   May 14, 2013, 03:13
Default Use Patch
  #2
Member
 
刘峰
Join Date: Mar 2013
Posts: 31
Rep Power: 3
Liufeng_ustb is on a distinguished road
Quote:
Originally Posted by bweicc View Post
Hello

I am simulating a gas-solid flow in a fluidized bed with Eulerian-Eulerian mixture model. I hope the particles are set at the bottom of the verticle flow field in initiation, but do not know how to do that. I just know how to set the volume ratio of the 2 phases, then the solid partcles are distributed in the whole region evenly.

Thank you in advance!

B
Hi, dude.
I am doing similar problem. I am not sure if you handle your problem.
You can use Adapt and Patch to initialize. The details you want are introduced in Tutorial, I think it's about Eulerian model and heat transfer.

Besides, I do fixed-bed simulation, but the results are of divergence, I still don't know why. And a friend of mine whose name is Chetan is giving me aome advice.

I do not know what is going on with your problem now.

Expect contact with you.
Liufeng_ustb is offline   Reply With Quote

Old   May 14, 2013, 03:31
Default
  #3
New Member
 
bw
Join Date: May 2013
Posts: 6
Rep Power: 3
bweicc is on a distinguished road
Hi Friend

I think Patch is the right way to solve it. And I tried Star ccm with User field function to define the initial distribution, with the language in Starccm called Syntax.
I am also new with simulation, You may tried to modify the parameters that are limited during iterations.
We can keep in touch.

Quote:
Originally Posted by Liufeng_ustb View Post
Hi, dude.
I am doing similar problem. I am not sure if you handle your problem.
You can use Adapt and Patch to initialize. The details you want are introduced in Tutorial, I think it's about Eulerian model and heat transfer.

Besides, I do fixed-bed simulation, but the results are of divergence, I still don't know why. And a friend of mine whose name is Chetan is giving me aome advice.

I do not know what is going on with your problem now.

Expect contact with you.
bweicc is offline   Reply With Quote

Old   May 14, 2013, 04:04
Default
  #4
Member
 
刘峰
Join Date: Mar 2013
Posts: 31
Rep Power: 3
Liufeng_ustb is on a distinguished road
Quote:
Originally Posted by bweicc View Post
Hi Friend

I think Patch is the right way to solve it. And I tried Star ccm with User field function to define the initial distribution, with the language in Starccm called Syntax.
I am also new with simulation, You may tried to modify the parameters that are limited during iterations.
We can keep in touch.
I am really happy to have the opportunity to communicate with you.

I have not involved in User Filed Function. I think when I finish undergraduate thesis, I can have plenty of time to study.

I frequently use the e-mail whose id is liufengustb@hotmail.com

You could send me to your e-mail into my e-mail.

Best regards
Liufeng_ustb is offline   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
Multiphase liquid-solid spouted bed: pressure problem ghost82 FLUENT 7 November 10, 2013 12:12
set BC for fluidized bed NAD FLUENT 9 September 28, 2012 03:24
fluidized bed urgent help mpo85 FLUENT 5 November 27, 2011 14:57
Fluidized bed simulation VS particle tracking windhair CFX 2 June 28, 2011 21:10
how to define static bed height for fluidized bed mohamad CFX 6 July 28, 2010 14:46


All times are GMT -4. The time now is 01:51.