EFFECTS OF REYNOLDS NUMBER ON AIR ENTRAINMENT CHARACTERISTICS IN CLASSICAL HYDRAULIC JUMPS BELOW A GATE

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  • ゲート直下に形成される跳水の空気混入特性に対するレイノルズ数の影響

Abstract

<p> For classical hydraulic jumps with an undeveloped inflow condition below a sluice gate, the magnitude and the distribution of the air concentration have been systematically investigated for a wide range of Reynolds numbers under a given inflow Froude number. The effects of Reynolds number on the air concentration distribution in the jumps are shown. The high-speed video camera images show that the amount of air bubbles into the jumps decreases as the value of Reynolds number decreases if the air-concentration ratios are affected by the Reynolds number.</p>

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