Effect of prismatic roughness on hydraulic jump in trapezoidal channels

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2012
Evcimen, Taylan Ulaş
A study of the hydraulic jump on a trapezoidal prismatic channel and roughened beds is presented. Extensive measurements have been made regarding the characteristics of hydraulic jumps as sequent depths, wing fluctuations, energy dissipation and jump length on artificially roughened beds for Froude numbers between 4.16 and 14.58. Three different types of prismatic roughness elements and nine different roughness patterns were installed separately on channel bottom and side walls throughout the experiments to obtain rough surfaces. Strip roughness elements were built from fiberglass sheets and implemented perpendicular to the flow direction. To avoid cavitation, roughness elements were designed in that way that the crests of the elements are not protruding into the flow. The founded properties were compared with the available data in literature and with the properties of hydraulic jump occurred on smooth bed.

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Citation Formats
T. U. Evcimen, “Effect of prismatic roughness on hydraulic jump in trapezoidal channels,” Ph.D. - Doctoral Program, Middle East Technical University, 2012.