Air entrainment and pressure development in skimming flow on an abrupt slope change on stepped spillways

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The rotating air-water ring, featuring a bubbly flow, in the vaneless gap of a reduced scale physical model of a pump-turbine operating in dewatered condition is investigated. High speed visualizations are performed together with pressure fluctuation measu ...

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Several stepped spillways have been built in recent decades, mostly integrated in the downstream faces of roller compacted concrete dams. Among them, only a few have changing bottom slopes. Comprehensive information on the effect of a slope change on the f ...

Francis turbines are subject to various types of cavitation flow depending on the operating condition. To enable a smooth integration of the renewable energy sources, hydraulic machines are now increasingly required to extend their operating range, especia ...

Numerous stepped spillways were built during the last decades. In particular, a stepped spillway may be integrated economically into the downstream face of a RCC gravity dam, or on valley flanks besides embankment or rockfill dams, where slope changes may ...

In a hydraulic power plant, it is essential to provide a reliable, sustainable and flexible energy supply. In recent years, in order to cover the variations of the renewable electricity production, hydraulic power plants are demanded to operate with more e ...

We here report a detailed high-pressure infrared transmission study of BiTeCl and BiTeBr. We follow the evolution of two band transitions: the optical excitation beta between two Rashba-split conduction bands, and the absorption. across the band gap. In th ...

Air entrainment and pressure development in skimming flow on an abrupt slope change on stepped spillways

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Rotating air-water ring in the vaneless gap of a pump-turbine operating in condenser mode

Fiber bundle model under fluid pressure

The turbulent pressure support in galaxy clusters revisited

Two-Phase Heat Transfer Mechanisms within Plate Heat Exchangers : Experiments, Modeling and Simulations

Effect of an abrupt slope change on air entrainment and flow depths at stepped spillways

Experimental evidence of inter-blade cavitation vortex development in Francis turbines at deep part load condition

Air Entrainment in Skimming Flow on Stepped Spillways: the Effect of an Abrupt Slope Change

Pressure measurements and high speed visualizations of the cavitation phenomena at deep part load condition in a Francis turbine

BiTeCl and BiTeBr: A comparative high-pressure optical study