Is it possible to simulate liquid-solid fluidized bed using MFiX?

MFiX
#1

Dear Seniors,

I am trying to compare the influence of fluid properties on fluidized bed (DEM method).

So, I ran the simulations using air and water as the fluid, respectively.

Properties of air and water were imported from the fluid database.
Viscosity was calculated using Sutherland’s law.
The fluid velocity (m/s) was the same for air and water at the inlet.

However, the statistical results are exactly the same for the two cases.

Any suggestions on the simulations for liquid-solid fluidized bed?

Thanks.

#2
  1. Could you upload your cases? 2. What meaning about your “statistical results”? It is statisticed particles or flow field?
#3

Did you actually change the fluid density? It must be set to a constant value for water (this is not imported from the species database).

Unfortunately, the Sutherland’s law coefficients are hard coded and use values for air at 273K. I would suggest you try first with a constant value for the viscosity. I am guessing this is a cold flow so this will be fine if the temperature is constant. You cal also use your own UDF if you ever need to use Sutherland’s law for a fluid other than air.

#4

Thanks for your suggestions.

#5

I mean “time-average flow field”

#6

You can check out this recent paper https://www.sciencedirect.com/science/article/pii/S0032591020300632 which used MFIX-DEM for simulating a liquid-solid CFB.

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