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闸墙长廊道侧支孔输水系统出流均匀性分析与布置优化

Flow uniformity and arrangement optimization for side-branch discharge holes in dam wall long corridor channel water conveyance system

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针对船闸分散式输水系统前后段支孔出流流量及出流时间不同的问题,依托国内某已建船闸,建立数学模型,通过计算数据与实测资料的耦合,验证模型适用性.在模型基础上修改支孔面积,模拟不同支孔面积比下各支孔的出流量,并利用方差和均匀性系数评价不同工况的出流均匀性.结果表明:1)支孔出流量前端支孔出流较早,输水中期和后期的流量较小;末端支孔出流较晚,但由于管道末端的压力较大,输水中期和后期的流量较大.2)支孔出流均匀性随前后支孔面积比的增大呈现先提高后降低的趋势.3)本工程前后支孔面积比情况良好.
Regarding the issue of disparate flow rates and discharge times between the upstream and downstream lateral openings of a distributed water conveyance system in a ship lock,this study relies on a mathematical model constructed based on an existing domestic ship lock.By coupling computational data with measured data,the suitability of the model is validated.The model is further modified to simulate the discharge rates of different lateral openings by adjusting their respective areas,and the discharge uniformity under various operating conditions is evaluated using variance and uniformity coefficients.The research results show that:1)The upstream lateral openings discharge earlier,resulting in lower flow rates during the mid and late stages of water conveyance,while the downstream lateral openings discharge later but experience higher flow rates during the mid and late stages due to greater pressure at the end of the pipeline.2)The discharge uniformity exhibits an initial improvement followed by a decline with an increase in the area ratio between the upstream and downstream lateral openings.3)The area ratio of the lateral openings in the practical engineering project represents a relatively favorable scenario.

ship lockdecentralized water conveyance systemlateral orifice dischargeuniformity

丁乐雨、李中华、安建峰、张首元、梅铃钦

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南京水利科学研究院,通航建筑物建设技术交通行业重点试验室,江苏 南京 210029

船闸 分散式输水系统 侧支孔出流 均匀性

2024

水运工程
中交水运规划设计院有限公司

水运工程

CSTPCD
影响因子:0.428
ISSN:1002-4972
年,卷(期):2024.(5)
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