Gas-solid flow in vertical tubes
- Mobil Research and Development Corp., Paulsboro, NJ (United States)
This paper reports on a computational study of fully-developed flow of gas-particle suspensions in vertical pipes which was carried out, using the model proposed recently by Sinclair and Jackson, to understand the predicted scale-up characteristics. It was shown that the model can capture the existence of steady-state multiplicity wherein different pressure gradients can be obtained for the same gas and solids fluxes. A pronounced and nonmonotonic variation of the pressure gradient required to achieve desired fluxes of solid and gas with tube diameter was predicted by the model, and this is explained on a physical basis. The computed results were compared with the experimental data. The model manifests an unsatisfactory degree of sensitivity to the inelasticity of the particle-particle collisions and the damping of particle-phase fluctuating motion by the gas.
- OSTI ID:
- 7016073
- Journal Information:
- AIChE Journal (American Institute of Chemical Engineers); (United States), Vol. 37:7; ISSN 0001-1541
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GASES
HEAT FLUX
PIPELINES
DIMENSIONS
FLOW MODELS
TWO-PHASE FLOW
SOLIDS
COMPARATIVE EVALUATIONS
COMPUTER CALCULATIONS
DESIGN
EQUATIONS OF MOTION
EXPERIMENTAL DATA
PARTICLES
PRESSURE GRADIENTS
DATA
DIFFERENTIAL EQUATIONS
EQUATIONS
EVALUATION
FLUID FLOW
FLUIDS
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
PARTIAL DIFFERENTIAL EQUATIONS
420400* - Engineering- Heat Transfer & Fluid Flow
420205 - Engineering- Transport & Storage Facilities- (1980-)
661300 - Other Aspects of Physical Science- (1992-)