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首页> 外文期刊>KSCE journal of civil engineering >Experimental Investigation of the Hydraulic Performance of a Hydraulic-Jump-Stepped Spillway
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Experimental Investigation of the Hydraulic Performance of a Hydraulic-Jump-Stepped Spillway

机译：液压跳跃溢洪道水力性能的实验研究

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摘要

For a traditional stepped spillway, low energy dissipation and cavitation damage may occur when the unit discharge is larger than a limit due to reduced air entrainment in the flow. In the present work, a new type of stepped spillway called hydraulic-jump-stepped spillway (HJSS) was developed, and the air was efficiently entrained into the flow by means of a hydraulic jump in the aeration basin, which was an aeration element of this stepped spillway. Compared with the traditional stepped spillway, various aspects of the hydraulic performance of the HJSS were experimentally investigated, including the flow pattern, energy dissipation, air entrainment characteristics and time-averaged pressure. Physical model results demonstrated that the HJSS achieved a higher energy dissipation, a more favorable air entrainment performance, and a more reasonable pressure distribution. The HJSS successfully increased the unit discharge from 50-60m(2)/s for a traditional stepped spillway to 101.47 m(2)/s.
机译：对于传统的阶梯溢洪道，当单元放电大于流动中的空气夹带时的空气夹带而大于限制时，可能会出现低能量耗散和空化损坏。在本作本作中，开发了一种新型阶梯溢洪道，称为液压跳跃溢洪道（HJSS），通过曝气盆中的液压跳跃有效地夹带进入流动的空气，这是一种曝气元件这次阶梯溢洪道。与传统的阶梯溢洪道相比，实验研究了HJSS的水力性能的各个方面，包括流动图案，能量耗散，空气夹带特性和时间平均压力。物理模型结果表明，HJSS达到了更高的能量耗散，更有利的空气夹带性能，以及更合理的压力分布。 HJSS成功将单位放电从50-60米（2）/ s为传统阶梯溢洪道到101.47米（2）/ s。

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