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Spouted bed - Jet penetration / bubbling

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Old   February 12, 2013, 13:19
Exclamation Spouted bed - Jet penetration / bubbling
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Bayard Morales
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Hello there.

I am modelling a (spouted bed using a euler-euler granular model in Fluent 14.

Even though I am following the model choice of some paper which can reproduce quite well the experimental data, I cannot obtain a correct jet regime.

The authors of the experimental work state that the spouting regime starts around gas inlet velocity of 38 m/s, but in my simulation I cannot get any spouting.
Using around 41 m/s, the gas barely penetrates the solid bed. Using 55 m/s, a bubbling regime happens.

Any thoughts on it??

Thanks!!
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Old   October 7, 2013, 10:06
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mohsen
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hi
i have a same problem,i want to modeling hydrodynamic of spouted bed my experimental reference is HE et al .
diameter of inlet=19mm
solid density=2500kg/m3
diameter of solid=1.41 mm
inlet velocity=41 m/s
H0=325mm
H=1000mm
initial volume fraction of solid=0.588
drag model= Gidaspow
other Authors reach spouting, in my simulation I cannot get any spouting.
did you solve your problem?
can you help me?

thank you in advance
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