1. Institute for Energy Systems, School of Engineering, The University of Edinburgh, Faraday Building, Colin Maclaurin Road, Edinburgh, EH93DW, United Kingdom
2. Unit of Hydraulic Engineering, University of Innsbruck, Technikerstrasse 13, 6020 Innsbruck, Austria
3. Faculty of Science and Technology, Free University of Bozen, Universitätsplatz 5, 39100 Bozen-Bolzano, Italy