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Experimental investigation on a high head model Francis turbine during load rejection
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics. Indian Institute of Technology Roorkee.
Waterpower Laboratory, Norwegian University of Science and Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-7599-0895
Indian Institute of Technology Roorkee.
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Number of Authors: 5
2016 (English)In: IOP Conference Series: Earth and Environment, ISSN 1755-1307, E-ISSN 1755-1315, Vol. 49, no 8, 082004Article in journal (Refereed) Published
Abstract [en]

Francis-99 is a set of workshop aiming to determine the state of the art of high head model Francis turbine simulations (flow and structure) under steady and transient operating conditions as well as to promote their development and knowledge dissemination openly. The first workshop (Trondheim, 2014) was concerned with steady state operation. The second workshop will focus on transient operations such as load variation and start-stop. In the present work, 2-D particle image velocimetry (PIV) with synchronized pressure measurements performed in the draft tube cone of the Francis-99 test case during load rejection is presented. Pressure sensors were mounted in the vaneless space and draft tube cone to estimate the instantaneous pressure fluctuations while operating the turbine from the best efficiency point (9.8°) to part load (6.7°) with the presence of a rotating vortex rope (RVR). The time-resolved velocity and pressure data are presented in this paper showing the transition in the turbine from one state to another

Place, publisher, year, edition, pages
2016. Vol. 49, no 8, 082004
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-62136DOI: 10.1088/1755-1315/49/8/082004ISI: 000400156200109Scopus ID: 2-s2.0-85012207016OAI: oai:DiVA.org:ltu-62136DiVA: diva2:1076659
Conference
28th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2016, Grenoble, France; 4 - 8 July 2016
Note

2017-02-23 (andbra);Konferensartikel i tidskrift

Available from: 2017-02-23 Created: 2017-02-23 Last updated: 2017-11-30Bibliographically approved

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Cervantes, Michel

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