EXPERIMENTAL AND NUMERCAL ANAYSES OF OSCILLATING HYDRAULIC JUMP AT A DROP STRUCTURE WITH A TRENCH

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  • トレンチ付き落差工で発生する周期振動跳水に関する画像・数値解析

Abstract

<p> It has been observed that a periodic water surface oscillation ocurrs downstream of a drop structure with a trench at specific hydraulic and geometric conditions. In order to establish a relationship governing the oscillation frequency, a number of experiments using flow visualization and image analysis techniques were conducted. As a result, we proposed a Strauhal number specific to the oscillating hydraulic jump. In addition, a numerical simulations based on SST 𝑘-𝜔 model was executed to successfully simulate time varying oscillating flow comparable to the experiment.</p>

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