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Position: Home > Articles > Study on Channel Unsteady Flow Transition Time Journal of Irrigation and Drainage 2016,35 (1) 71-73+98

渠道非恒定流过渡时间影响研究

作  者:
周美林;吕宏兴;王家琪;韩文霆
单  位:
中国旱区节水农业研究院;西北农林科技大学水利与建筑工程学院
关键词:
渠道;非恒定流;过渡时间;特征线法;闸门
摘  要:
采用特征线法,模拟了不同渠道长度、闸门调控时间、流量变化率及运行方式下渠道水流过渡过程,并分析了其对水流过渡时间的影响。结果表明,渠道运行方式对水流过渡时间影响较小。渠长、调控时间、流量变化率为影响过渡时间的敏感因素。渠道越长,闸门调控时间越长,流量变化率越小,水流过渡时间就越短,水位流量波动越小,水流过渡越平缓。
译  名:
Study on Channel Unsteady Flow Transition Time
作  者:
ZHOU Meilin;LV Hongxing;WANG Jiaqi;HAN Wenting;College of Water Resources and Architectural Engineering,Northwest A&F University;Institute of Water Saving Agriculture in Area Regions of China;
关键词:
channel;;unsteady flow;;transition time;;characteristics method;;control gate
摘  要:
The characteristics method was adopted to simulate the water transient processes under different channel lengths,gate control times,flow rates and operational ways,and the impacts of these factors on the flow transition times were analyzed as well.The results indicated that channel operation mode had less effects on flow transition time while channel length,control time and flow rate were sensitive to flow transition time.The longer channel length,the longer control time and the smaller flow rate,the shorter flow transition time,the slower water flow fluctuation and the smoother the flow transition.

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