Physical Model Testing and Validation of Long-Throated Flumes
Long-throated Flumes (LTFs) are widely-used structures for monitoring flow rates in open channels. They may be built in a variety of different shapes and are generally very accurate when operated under un-submerged flow conditions. This paper deals with the application of LTFs to monitor the flow distribution within a complex open channel system in a sewage treatment system. Augmentation of the capacity of the system required the construction of new channels and associated long-throated flumes to control and to monitor the various flow distributions. The preliminary design of the LTFs was carried out using the HEC-RAS backwater program coupled with the WINFLUME program for the flumes themselves. The preliminary design was tested within a large physical model, operated under the Froudian similarity law. It is shown that the accuracy of the flow distribution predicted by the HEC-RAS program requires a very precise determination of the energy losses, and that this determination is not possible with standard analytical models. On the other hand, a high degree of correlation is shown between theory, physical model, and prototype measurements of the designed LTFs.
Robert Keller
Department of Civil Engineering, Monash University,Clayton, Victoria 3800, Australia
国际会议
南京
英文
115-119
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）