Radionuclide scrubbing in water pools. Volume 1. Gas-liquid hydrodynamics. Final report

Technical Report · Thu Aug 01 00:00:00 EDT 1985

OSTI ID:5500128

Paul, D D; Flanigan, L J; Cudnik, R A; Cunnane, J C; Collier, R P

During severe core damage accidents, the amount of radioactive aerosol retained in the water pools of BWR and PWR power plants is expected to be dependent on the gas-liquid hydrodynamics of the system. Experimental studies of gas-liquid hydrodynamics have been conducted at Battelle-Columbus to support aerosol removal experiments and to provide data for computer model development. Tests have been conducted using mixtures of condensable (superheated steam) and noncondensable (air, helium, or hydrogen) gases injected into water pools through single hole and multihole configurations typical of those found in BWR and PWR quencher or header pipes. Expressions have been developed which describe the initial vapor globule size and emission frequency at the injector outlet, the breakup of hydrodynamically unstable vapor globules, the ultimate size distribution of gas bubbles in a water pool, and the spatial variations in the bubble rise velocities as a function of injector geometry and flow conditions.

• Research Organization: Battelle Columbus Labs., OH (USA)
• OSTI ID: 5500128
• Report Number(s): EPRI-NP-4154-Vol.1; ON: TI85920813
• Country of Publication: United States
• Language: English

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