Behavior of Liquid Surface Impinged by Air Jets

Abstract

Interfacial behavior has been studied experimentally in a wide range of operational conditions of circular air jets which impinge upon a liquid surface to mix the liquid and to promote mass transfer through the liquid surface.
A balance of the kinetic energy of the free jet and the potential energy of the liquid surface is applied to correlating maximum depth, diameter and shape of cavity with manipulating variables for the laminar impinging jet. But for the turbulent jet the energy balance is not applicable to the estimation of cavity diameter and shape except of maximum depth. The shape is approximated by part of a sine curve and the diameter is estimated from the momentum balance of impinging jet and displaced liquid. The critical jet momentum for splashing liquid has also been correlated experimentally with modified We number (ρ_ggH²/σ_l).