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:6307694

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. 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 two-phase 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 with various data show satisfactory agreement. 31 refs.

• Research Organization: Argonne Natl Lab, IL, USA
• OSTI ID: 6307694
• Report Number(s): CONF-820601-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., Pressure Vessels Piping Div., (Tech. Rep.) PVP; (United States) Journal Volume: 64
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
DRAG
DROPLETS
ENTRAINMENT
EVALUATION
FLOW MODELS
FLUID FLOW
MATHEMATICAL MODELS
PARTICLES
TWO-PHASE FLOW
VISCOSITY