Hydrodynamic stability of inverted annular flow in an adiabatic simulation

Journal Article · Sat Feb 01 04:00:00 EST 1986 · J. Heat Transfer; (United States)

DOI:https://doi.org/10.1115/1.3246909· OSTI ID:5873445

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

Inverted annular flow was simulated adiabatically with turbulent water jets, issuing downward from large aspect ratio nozzles, enclosed in gas annuli. Velocities, diameters, and gas species were varied, and core jet length, shape, breakup mode, and dispersed core droplet sizes were recorded at approximately 750 data points. Inverted annular flow destabilization led to inverted slug flow at low relative velocities, and to dispersed droplet flow, core breakup 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/, We/sub J/, ..cap alpha.., and We/sub G/,rel. Correlations for core shape, breakup 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: Reactor Analysis and Safety Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 5873445
• Journal Information: J. Heat Transfer; (United States), Journal Name: J. Heat Transfer; (United States) Vol. 108:1; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADIABATIC PROCESSES
DROPLETS
HYDROGEN COMPOUNDS
JETS
NOZZLES
OXYGEN COMPOUNDS
PARTICLES
SIMULATION
STABILITY
TURBULENCE
WATER