Hydrodynamics of annular-dispersed flow

Conference · Fri Jan 01 04:00:00 EST 1982 · Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States)

OSTI ID:5552061

Ishii, M; Kataoka, I

The interfacial drag, droplet entrainment, and droplet size distributions are important for detailed mechanistic modeling of annular dispersed two-phase flow. In view of this, recently developed correlations for these parameters are presented and discussed in this paper. The drag correlations for multiple fluid particle systems have been developed from a similarity hypothesis based on the mixture viscosity model. The results show that the drag coefficient depends on the particle Reynolds number and droplet concentration. The onset of droplet entrainment significantly alters the mechanisms of mass, momentum, and energy transfer between the film and gas core flow as well as the transfer between the twophase mixture and the wall. By assuming the roll wave entrainment mechanism, the correlations for the amount of entrained droplet as well as for the droplet size distribution have been obtained from a simple model in collaboration with a large number of data. The comparison of the correlations to various data show satisfactory agreement.

• Research Organization: Argonne National Laboratory, Argonne, IL
• OSTI ID: 5552061
• Report Number(s): CONF-820601-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States) Journal Volume: PVP-VOL. 64
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CORRELATIONS
DRAG
DROPLETS
ENERGY TRANSFER
ENTRAINMENT
FILMS
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
HYDRODYNAMICS
MASS TRANSFER
MATHEMATICAL MODELS
MECHANICS
PARAMETRIC ANALYSIS
PARTICLES
REYNOLDS NUMBER
TWO-PHASE FLOW
VISCOSITY
WALLS