A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stepped chute of Trängslet Dam: physical model study
A spillway upgrade of the Trängslet Dam, Sweden, is planned. The existing rock chute will be converted into a stepped chute of variable width, step height, and bottom slope. Its two-phase flow features including cavitation risk were investigated in a hydraulic scale model of which the effects of step height and chute width on flow characteristics and air transport were assessed. A comparison with standard approaches for stepped chute flows indicates in general a good agreement despite the geometrical complications and the non-uniform air–water flow. Deviations were attributed to spatial flow features including junctions, shock waves, and variable chute width and slope. The cavitation performance of the chute was found to be not critical up to the design discharge, but incipient cavitation may not be excluded for the safety-check flood. Therefore, the current knowledge of two-dimensional stepped chute flow can at least be approximately adopted for more complicated chute arrangements.
Stepped chute of Trängslet Dam: physical model study
A spillway upgrade of the Trängslet Dam, Sweden, is planned. The existing rock chute will be converted into a stepped chute of variable width, step height, and bottom slope. Its two-phase flow features including cavitation risk were investigated in a hydraulic scale model of which the effects of step height and chute width on flow characteristics and air transport were assessed. A comparison with standard approaches for stepped chute flows indicates in general a good agreement despite the geometrical complications and the non-uniform air–water flow. Deviations were attributed to spatial flow features including junctions, shock waves, and variable chute width and slope. The cavitation performance of the chute was found to be not critical up to the design discharge, but incipient cavitation may not be excluded for the safety-check flood. Therefore, the current knowledge of two-dimensional stepped chute flow can at least be approximately adopted for more complicated chute arrangements.
Stepped chute of Trängslet Dam: physical model study
Lutz, Nicola (author) / Lucas, Jill (author) / Lais, Adriano (author) / Boes, Robert M. (author)
Journal of Applied Water Engineering and Research ; 3 ; 166-176
2015-07-03
11 pages
Article (Journal)
Electronic Resource
English
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