Non-Equal Width 45° Dividing Open Channel Flow

• Main Authors: Tai-Yi Ho, 何泰亦
• Other Authors: Chung-Chieh Hsu
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/74189245268291549733

碩士 === 淡江大學 === 水資源及環境工程學系 === 91 === The study on non-equal width open-channel flow is using three channel width ratio(branch to main 1 ,1/2 ,1/3)and seven discharge ratio under 45 degree angles dividing flow by hydraulic experiments. The channel bed of present study is horizontal and the cross section is rectangular.Besides, the main channel flow is subcritical. At the downstream of main and branch channel use gates to control the discharge ratio and depth.The measurement including the depth and velocity of upstream and downstream in main and branch channel. The reasons influence status of dividing flow are channel width ratio, slop of channel bed and angle between main and branch channel. According to the results of the experiment show that the flow angle will become smaller while the discharge ratio become larger and the width of channel become larger. The width of circulation zone near water surface is larger than at the bottom. The energy loss is large in the branch channel.