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

jackzhan · October 4, 2011, 22:16

i've made a mistake,sorry

bageshwar · October 5, 2011, 06:56

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

jackzhan · October 6, 2011, 03:38

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.

Quote:

Originally Posted by bageshwar

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

mohsen0488 · October 7, 2013, 11:12

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

October 4, 2011, 22:16	how to set inlet velocity of a 2d spouted bed?	#1
jackzhan New Member zhang Join Date: Oct 2010 Posts: 4 Rep Power: 16	i've made a mistake,sorry Last edited by jackzhan; October 5, 2011 at 03:51.

October 5, 2011, 06:56	description	#2
bageshwar New Member Bhageshvar Join Date: Oct 2011 Posts: 12 Rep Power: 15	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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October 7, 2013, 11:12		#4
mohsen0488 Member mohsen Join Date: Sep 2013 Posts: 42 Rep Power: 13	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