NDLI: A model for the temperature effect on onset velocity of turbulent fluidization of Geldart type A particles

Content Provider	Springer Nature Link
Author	Choi, Jeong Hoo Ryu, Ho Jung Yi, Chang Keun
Copyright Year	2010
Abstract	This study proposes a model to predict the temperature effect on the onset velocity of turbulent fluidization (u$_{c}$) of Geldart type A particles. It was found that void splitting could occur in the whole bed when the initial bubble size at the distributor (d$_{bo}$) was greater than the maximum stable bubble size (d$_{bmax}$) or the equilibrium bubble size (d$_{beq}$). The proposed model was successful to fit the trend of temperature effect on the u$_{c}$. When the bubble growth was limited by the d$_{bmax}$, the u$_{c}$ increased with an increase of temperature. However, when the d$_{beq}$ was smaller than d$_{bmax}$, the u$_{c}$ decreased with an increase of temperature because the minimum fluidizing velocity and thus the d$_{beq}$ decreased. The u$_{c}$ increased initially and decreased later when the d$_{beq}$/d$_{bmax}$ starting with the ratio >1 decreased to the ratio <1 as temperature increased. The present model predicted the trend properly that any other existing correlations could not be able to reflect.
Starting Page	304
Ending Page	307
Page Count	4
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	28
Issue Number	1
e-ISSN	19757220
Language	English
Publisher	Springer US
Publisher Date	2010-12-21
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Model Temperature Effect Transition Velocity Onset Velocity Turbulent Fluidized Bed Materials Science Industrial Chemistry/Chemical Engineering Biotechnology Catalysis
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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