![]() This report presents an investigation into the determination of Manning's Roughness Coefficient and the flow-depth relationship in an open channel flume. This paper is based on review of essential literature based on flow measurements in open channel and documenting the significance of the proposed research so that it could be a repository in the present field for researchers. The energy loss in these flow measuring devices is also relatively less. and few are non-intrusive devices like measuring flumes like Partial-flumes, Venturi-flumes, standing-wave flumes etc. Most of it to be accurate is intrusive like weirs notches etc. Assuming water to be nearly an ideal fluid, most of the researchers have used various methods to measure water in closed conduits and open channels. Even the ground water has been overused resulting in its scarcity and the available quantity of water needs to be managed resourcefully which implies that the fluid needs to be measured. In particular, water is an important and irrecoverable and irreplaceable resource, practically and absolutely required for sustainability of all living beings. The average error in the estimation of flow rate between them was 0.0032 (0.32%) with a head loss of 0.0348m.įlow measurement is an exciting and interesting topic in fluid mechanics which is extremely important and of late is gaining much importance due to mismanagement and its over-usage. Flow rates computed by the fabricated 0.1524m Parshall flume have a slight difference of 0.00002m 3 /s – 0.00018m 3 /s, with that of the free flow calibration. When compared with the free flow calibration table for Parshall flumes, the two results were in good agreement. The results achieved shows that the model has good ability to estimate flow rate passing through the fabricated Parshall. The flow rate of the stream was computed with a Parshall flume equation. In this study, head measurements of a stream behind mass communication department, Nnamdi Azikiwe, University were taken using a fabricated 6-inch Parshall flume for five days. The advantages of this structure include minimal head loss, low construction cost, adaptability to a variety of channel types and ability to measure wide ranges of flow with custom-designed structure. Parshall flume provides economical and flexible water measurement capabilities for a wide variety of open channel flow situations.
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