Multidimensional modeling of turbulent two-phase flows in stirred vessels

Journal Article · Tue Dec 01 04:00:00 EST 1992 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690381210· OSTI ID:6825923

Gosman, A D; Lekakou, C; Politis, S ^[1]; Issa, R I ^[2]; Looney, M K ^[3]

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1. Imperial Coll. of Science and Technology, London (United Kingdom). Dept. of Mechanical Engineering
2. Dept. of Mineral Resources Engineering, Imperial College (United Kingdom)
3. Imperial Chemical Industries PLC (United Kingdom)

This article outlines a computational procedure for the prediction of dispersed two-phase, solid-liquid and gas-liquid, turbulent flows in baffled, impeller-stirred vessels common in the chemical industries. A two-flow Eulerian model is employed, based on the main assumption of interpenetrating coexisting continua. Mean momentum and mass conservation equations are solved for each phase and turbulent closure is effected by extending the single phase k-[epsilon] turbulence model to two-phase flows. The resulting set of highly coupled equations is solved by a two-phase implicit algorithm, PISO-2P, which allows calculation for a wide range of phase fraction, particle size and phase density ratios. Predictions are presented for solid-liquid and gas-liquid (bubbly) flows. Comparisons are made with experimental data for the mean phase velocities and volume fraction, mean slip velocity and turbulence quantities.

• OSTI ID: 6825923
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Journal Name: AIChE Journal (American Institute of Chemical Engineers); (United States) Vol. 38:12; ISSN 0001-1541; ISSN AICEAC
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
BAFFLES
CHEMICAL PLANTS
COMPUTERIZED SIMULATION
CONTROL EQUIPMENT
DATA
EQUATIONS
EQUIPMENT
EXPERIMENTAL DATA
FLOW MODELS
FLOW REGULATORS
FLUID FLOW
INDUSTRIAL PLANTS
INFORMATION
MANY-DIMENSIONAL CALCULATIONS
MATHEMATICAL MODELS
NUMERICAL DATA
PHASE VELOCITY
PIPELINES
SIMULATION
TURBULENT FLOW
TWO-PHASE FLOW
VELOCITY