Mesoscale Analysis of Hydraulics by Weilin Xu

Author:Weilin Xu
Language: eng
Format: epub
ISBN: 9789811597855
Publisher: Springer Singapore

4.2 Mesoscale Mechanism for Surface Aeration of High-Velocity Flows

Ehrenberge (1927) was the first to describe the physical cross-sectional structure of a self-aerated flow along the flow depth direction. Later, researchers basically followed Ehrenberger’s stratification method for self-aerated flows and believed that a typical self-aerated flow can be divided into four layers, namely, a water-droplet leaping layer (top layer), an air-water mixture layer (middle layer), an air-bubble suspension layer (bottom layer), and a possible bottommost clear-water layer (Fig. 4.1).

Fig. 4.1Schematic diagram of the distribution of the water and air regions in the cross-section of a self-aerated flow (Ehrenberger 1927)

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