【摘要】 跌水是一种较为常见的渠系建筑物,当水流经过跌水口时必然产生缓流向急流的过渡。在梯形渠道上通过2种不同的连接渐变段(扭面与隔墙)以及不同的堰厚和缺口宽度组合,进行了系统的跌水口量水试验,应用量纲分析法建立了2种连接渐变段在不同堰厚下的流量公式,得出流量计算的平均相对误差最大值为3.002%。更多还原

【Abstract】 Drop water is one kind of common channel system structures,it mustexist that the transition from supercritical flow to subcritical flow when water pass through the gap of drop water.A series of experiments are carried on through two kinds of different link transition section(the distortion and the partition wall) as well as the different weir thickness and gap width at the trapezoidal channel.The discharge formula was established by the method of dimensional analysis for two kinds of link transition section at the different thickness of weir.The maximum mean absolute value error of discharge calculating results is 3.002%.更多还原