APPLICATION OF LUMLEY DRAG REDUCTION MODEL TO 2-PHASE GAS-PARTICLE FLOW IN A PIPE

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A "two-fluid model" has been incorporated with Lumley's drag reduction model to analyze the mechanism of momentum transfer in the turbulent dilute gas-particle flow in a vertical pipe. The change of the effective viscous sublayer thickness by the presence of particles is modeled by Lumley's theoretical model. The numerical computations of the friction factor and the pressure drop in a fully developed pipe flow are in good agreement with the corresponding experimental data for an average particle size of 15-mu-m. It is proved that Lumley's model is successful in predicting the correct reduction behavior of the drag in the gas-particle flows. It has been confirmed that the effective viscous sublayer thickness for two-phase gas-particle flow is dependent on the particle relaxation time, Kolmogoroff time scale and the solids-gas loading ratio.
Publisher
ASME-AMER SOC MECHANICAL ENG
Issue Date
1991-03
Language
English
Article Type
Article
Keywords

SOLID SUSPENSION FLOW; TURBULENT; LENGTH; MOTION

Citation

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, v.113, no.1, pp.130 - 136

ISSN
0098-2202
URI
http://hdl.handle.net/10203/13521
Appears in Collection
ME-Journal Papers(저널논문)
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