Abstract

A theory is given of the aeration produced by the impact of a high speed water jet on a water surface. Experimental verification agrees more than satisfactorily with the developed theory over a wide range. The boundary conditions for the theory have a physical meaning. The jet must be submitted to air friction forces ( We > 10), and the accompanying air boundary layer must be laminar ( Re L < 5 × 10 5). In the case of a turbulent boundary layer the same kind of analysis might be used, however at the moment no reliable solutions for a turbulent boundary layer are well established.

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