| contributor author | Robert J. Keller | |
| contributor author | Soon S. Fong | |
| date accessioned | 2017-05-08T20:46:58Z | |
| date available | 2017-05-08T20:46:58Z | |
| date copyright | February 1989 | |
| date issued | 1989 | |
| identifier other | %28asce%290733-9437%281989%29115%3A1%28125%29.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/27008 | |
| description abstract | The trapezoidal free overfall is analyzed by the one‐dimensional momentum equation, including an assumed pressure distribution at the brink. The pressure distribution is based on previous measurements in rectangular and triangular open channels. The predicted relationship between brink depth and discharge is compared with experimental data from a laboratory flume, and excellent agreement is evident. A calibration chart, applicable to any mild slope trapezoidal channel, is developed theoretically and checked against the data from the present study and data from previous studies. Again excellent agreement is noted. Comparison with previous predictive techniques, in which the pressure distribution at the brink was assumed to be uniformly atmospheric, illustrates the importance of including this pressure distribution in the analysis. | |
| publisher | American Society of Civil Engineers | |
| title | Flow Measurement with Trapezoidal Free Overfall | |
| type | Journal Paper | |
| journal volume | 115 | |
| journal issue | 1 | |
| journal title | Journal of Irrigation and Drainage Engineering | |
| identifier doi | 10.1061/(ASCE)0733-9437(1989)115:1(125) | |
| tree | Journal of Irrigation and Drainage Engineering:;1989:;Volume ( 115 ):;issue: 001 | |
| contenttype | Fulltext | |
