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how to set inlet velocity of a 2d spouted bed?

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Old   October 4, 2011, 21:16
Question how to set inlet velocity of a 2d spouted bed?
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zhang
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i've made a mistake,sorry

Last edited by jackzhan; October 5, 2011 at 02:51.
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Old   October 5, 2011, 05:56
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Bhageshvar
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Can u pls explain ur problem in detail?

to the current question try to determine the minimum fluidisation velocity and then determine the velocity of spout using some flow regime maps available in paper

http://www.sciencedirect.com/science...09250905000953
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Old   October 6, 2011, 02:38
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zhang
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thank you bageshwar, i've solved my problem.
it was that a cylindrical/conical based cylindrical spouted bed should not be simulated by a 2d-plan model , it should be simulated by a 2-d axial asymmetric model , assuring that the inlet velocity and the superficial gas velocity are in accordance with the experiment results.



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Originally Posted by bageshwar View Post
Can u pls explain ur problem in detail?

to the current question try to determine the minimum fluidisation velocity and then determine the velocity of spout using some flow regime maps available in paper

http://www.sciencedirect.com/science...09250905000953

Last edited by jackzhan; October 6, 2011 at 11:21.
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Old   October 7, 2013, 10:12
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hi
i have a 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
geometry is 2-d axial asymmetric
other Authors reach spouting, in my simulation I cannot get any spouting.

can you help me?

thank you in advance
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