Discharge coefficients for ogee spillways - IWA Publishing
2022年3月11日 · Results show that for all ogee weirs, the discharge coefficient (C) increases with increasing P/H e, and then remains constant (P is the spillway height and H e is the head above the weir crest). The value of the discharge coefficient decreases from 2.25 in free-flow conditions to 2.15 with submerged-flow conditions.
Discharge coefficients for ogee weirs including the effects of a ...
2020年4月17日 · To demonstrate a practical application of the discussed method, it is used to calculate the discharge coefficient (C 0) of an ogee weir due to the existence of an upstream sloping face and a discharge over it that differs from the …
Impact of downstream obstructions on ogee weir ... - IWA …
2024年5月2日 · The study employed multilinear and polynomial regression techniques to predict variations in the coefficient of discharge for an ogee weir due to downstream obstructions at different angles. This approach provides a quantifiable understanding of how such obstructions impact hydraulic efficiency.
Comparative study of experimental and CFD analysis for predicting ...
2021年11月22日 · Present study highlights the behavior of the weir crest head and width parameter on the discharge coefficient of a compound broad crested (CBC) weir. Computational fluid dynamics model (CFD) is validated with laboratory experimental investigations.
Novel design of composite broad-crested weir for determining …
2024年5月25日 · The novel technique of holding an unvarying emission coefficient is utilized to properly measure a broad array of emissions no matter the weir head, where the coefficient of discharge is one of the input design parameters.
Investigation of the impact of surface roughness on the flow ...
2024年7月1日 · Two types of weir geometry were used and outfitted with three types of surface roughness (cement, boulders, and gravel) and the coefficient of discharge. The outcomes showed that the coefficient of discharge reduces as the surface roughness of the broad-crested weir increases for a given (H/H + P). The average value of the discharge coefficient ...
A review of hydraulic performance and design methods of …
The results showed that the discharge coefficient of labyrinth side weirs produced a higher coefficient value than classical side weirs. Also, they found a reliable equation for the discharge coefficient. The discharge coefficient of the labyrinth side weir was 1.5–4.5 times bigger than the rectangular side weir Crookston & Tullis (2011a)
Experimental study of the effect of the input and output key …
2024年8月1日 · Kabiri-Samani & Javaheri (2012) studied the effect of weir geometry including weir length and height, upstream key and downstream key width, as well as upstream and downstream apex overhangs on the discharge coefficient of PKWs in …
Influential parameters on submerged discharge capacity of …
Accuracy of the best proposed models developed in this study, and some head-discharge relationships for submerged ogee-crest weir available in literature were compared to evaluate the performance of the applied approach.
Uniform flow and energy dissipation of hydraulic-jump …
2020年4月8日 · For instance, with achieving a uniform flow, Chanson (1993) suggested that the energy dissipation rate can be estimated by friction coefficient. Peng et al. suggested aerated flow depth.