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Schiffer J.,Institute For Hydraulische Stromungsmaschinen | Fritsch R.,Wieserfeldplatz 9 | Benigni H.,Institute For Hydraulische Stromungsmaschinen | Jaberg H.,Institute For Hydraulische Stromungsmaschinen
WasserWirtschaft | Year: 2015

In order to contribute to the global transition from fossil to renewable energy sources several countries all overthe world are now focusing also more strongly on power generation from small-scale hydropower plants. A very important aspect in this context is how to maximize the exploitation of the hydraulic power available at a new power plant site. One possibility for the maximization of the power output in case of surplus water is the technical utilization of the ejector effect which can be reasonably used for low head applications. In order to get a scientific insight into the idea of the energetic use of the excess water a model test rig was created at Graz University of Technology in order to investigate all the negative and positive aspects connected with the ejector effect.

On the occasion of 100 year jubilee of the Kaplan turbine a short overview of Viktor Kaplan's history is given and the significance of this turbine type, of the discovery of the cavitation in water turbines as well as the Kaplan design method for all kinds of fluid machinery is incurred. Modern simulation methods for cavitation are touched.

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