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 yee wan November 28, 2002 02:49

simulating a fluidized bed

Hi every one. Can FLUENT v.6 simulate a 2d gas-solid fluidized bed system??

Now my problem is that cannot define the bottom plate, gas inlet boundary condition. Which boundary type should i choose??

thank you

 MIssNancy November 28, 2002 06:27

Re: simulating a fluidized bed

Yes it can. In the manual there is an example. Start with that one.

Nancy

 yee wan November 28, 2002 22:12

Re: simulating a fluidized bed

i think my question is not very clear.

now the problem i donnt my domain is correct or not. i use gambit to bluid the 2d model, which has 2faces, top and bottom. for the bottom edge, i mean the edge which will represent the plate for flow inlet, what boundary condition should i use, wall? pressure inlet??

thank you

 MissNancy November 29, 2002 03:07

Re: simulating a fluidized bed

Hope I understand your prob correctly. You want to model a fluidised bed where the gas/air is injected from the bottom? In that case, you can use inlet BC (you should consider multiple inlet, I mean several injection points)

Nancy

 ravi varma November 30, 2002 15:49

Re: simulating a fluidized bed

i don not believe you have to define several injection points. if you have one boundary you define just one boundary condition. defining several injection point for the same boundary might confuse the solver and you may not see convergence. alternatively, you could define a velocity profile with UDFs.

 joy123 December 2, 2002 08:51

Re: simulating a fluidized bed

You can use porous jump b.C. or try with "source term" option. Hope it works.

 yee wan December 2, 2002 23:16

Re: simulating a fluidized bed

But I am modeling a 2D bed.... I dont think I can choose porous jump as the B.C.....

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