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本文将光滑矩形明渠的流速分布分为四个区域进行研究。第一区包括渠底内区和边墙外区。第二区属于渠底和边墙二者的内区。第三区由边墙内区和渠底外区所组成。第四区则由渠底和边墙二者的外区所形成。明渠的宽深比从2.0至8.0,佛汝德数从0.2至0.7。还包括了宽深比为1.0时佛汝德数为0.2和0.3的试验。以水力半径和断面平均流速来定义的雷诺数的变化范围从10~4至7×10~4。
In this paper, the flow velocity distribution of smooth rectangular open channel is divided into four areas for research. The first area includes the inner bottom of the canal and the outer area of the side wall. The second area belongs to the inner area of both the canal bottom and the side wall. The third area consists of the inner area of the side wall and the outer area of the canal bottom. The fourth zone is formed by the outer zone of both the canal bottom and the side wall. The open channel has a ratio of width to depth from 2.0 to 8.0 and the Froude number ranges from 0.2 to 0.7. Also included is the aspect ratio of 1.0 when the Froude number is 0.2 and 0.3. The Reynolds numbers, defined by the hydraulic radius and the average cross-section velocity, vary from 10 to 4 to 7 × 10 -4.