Flow Separation Downstream of Equal and Opposing Flow Junctions in Open Channels

Frizzell, Carl; Werth, David

doi:10.1061/40856(200)188

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…This decrease in reverse flow contributes to the reduction of possible damage to the bed and sides downstream the channels. Although using the physical model study to evaluate the separation zones in such hydraulic phenomenon, a validation of an analytical method of the opposing flow condition is achieved [5]. There was a good agreement between analytical method and physical model.…”

Section: F Sauida/ Department Of Water Engineering Faculty Of Enginementioning

confidence: 94%

Length Of Flow Separation

F¹

2016

Fouth International Conference on Advances in Civil, Structural and Construction Engineering - CSCE 2016

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Flow separation is a natural phenomenon encountered at some cases downstream of multi-vent regulators. The main flow is divided into current flow and dead zone flow (reverse flow and weak forward flow). The length of flow separation must be taken into consideration downstream of regulators for canal side's protection and accurate flow measurement. The present study aims to analyze the flow separation downstream of regulators in sudden expanding stilling basin. An extensive experimental program has been conducted on a regulator model of five vents at the Hydraulic Research Institute (HRI). Empirical model based on the results of the dimensional analysis is proposed within this study to compute the dimensionless length of separation by using multiple linear regression analysis. Results revealed that the empirical model proposed can be used for practical applications in canal side's protection and flow measurements downstream of hydraulic structures. Keywordsseparation of flow, length of flow separation, sudden expanding channel, hydraulic structures, and velocity vectors.sides and the minimum distance of flow measurement downstream of multi-vent regulators based on the maximum width of flow separation zone only.

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Section: F Sauida/ Department Of Water Engineering Faculty Of Enginementioning

confidence: 94%