Hydrodynamic stability of inverted annular flow in an adiabatic simulation

Journal Article · Sun Jan 01 04:00:00 EST 1984 · HTD (Publ.) (Am. Soc. Mech. Eng.); (United States)

OSTI ID:6359990

De Jarlais, G; Ishii, M; Linehan, J

Inverted annular flow was simulated adiabatically with turbulent water jets, issuing downward from large aspect ratio nozzle, enclosed in gas annuli. Velocities, diameters, and gas species were varied, and core jet length, shape, break-up mode, and dispersed core droplet sizes were recorded at approximately 750 data points. Inverted annular flow destabilization lead to inverted slug flow at low relative velocities, and to dispersed droplet flow at high relative velocities. For both of these transitions from inverted annular flow, core break-up length correlations were developed by extending work on free liquid jets to include this coaxial, jet disintegration phenomenon. The results show length dependence upon D/sub J/, Re/sub J/, ..cap alpha.. and We/sub G, rel/. Correlations for core shape, break-up mechanisms and dispersed core droplet size were also developed, by extending the results of free jet stability, roll wave entrainment, and churn turbulent droplet stability studies.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 6359990
• Journal Information: HTD (Publ.) (Am. Soc. Mech. Eng.); (United States), Journal Name: HTD (Publ.) (Am. Soc. Mech. Eng.); (United States) Vol. 23; ISSN ASMHD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ANNULAR SPACE
CONFIGURATION
DROPLETS
FLUID FLOW
FLUID MECHANICS
HYDRODYNAMICS
MECHANICS
NUMERICAL SOLUTION
PARTICLES
SPACE
STABILITY