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Experiments on Turbulence Intensity and Bubble Frequency in Self-Aerated Open Channel Flows

Ruidi Bai, Faxing Zhang, Shanjun Liu, Wei Wang
2018 Water  

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Although spillways have been investigated experimentally by various researchers, only a few studies have been conducted on the comprehensive properties of a self-aerated air-water flow. In this study, new experimental data were recorded and discussed for the distribution of the air concentration, air-water velocity, turbulence intensity and bubble frequency in the completely developed regions for spillways. It was observed that both the turbulence intensity and bubble frequency increased from
more » ... e bottom and subsequently decreased near the free surface. The positions of maximum air bubble frequency and turbulence intensity gradually approached air concentration to 0.50 in the self-aerated developed region. Self-similar relationships between the turbulence intensity and bubble frequency were proposed.
doi:10.3390/w10091201 fatcat:oj672mbgvba7po7r3dbukhta6a
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Ruidi Bai, Faxing Zhang, Shanjun Liu, Wei Wang. "Experiments on Turbulence Intensity and Bubble Frequency in Self-Aerated Open Channel Flows." Water 10.9 (2018) 1201