Rate of Liquid Entrainment at the Gas-Liquid Interface of a Liquid Submerged Sonic Gas Jet

A model is presented describing the phenomenon of liquid entrainment resulting from the presence of Kelvin-Helmholtz instability at the gas-liquid interface of a sonic gas jet submerged in a mass of liquid. On the basis of this model, available experimental data regarding the rate of entrainment were correlated satisfactorily. The correlation thus obtained is of importance in deriving the heat transfer coefficient in the impingement area of a fuel pin impinged upon by a fission-gas jet released from a failed pin in a liquid-metal-cooled fast breeder reactor fuel subassembly.