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Drinking Water Engineering and Science An interactive open-access journal

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doi:10.5194/dwes-2017-2
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
30 Jan 2017
Review status
A revision of this discussion paper was accepted for the journal Drinking Water Engineering and Science (DWES) and is expected to appear here in due course.
CFD simulations to optimize the blades design of water wheels
Emanuele Quaranta and Roberto Revelli Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, Italy
Abstract. In low head sites and at low discharges, water wheels can be considered among the most convenient hydropower converters to install. The scope of this work is to improve the performance of an existing breastshot water wheel changing the blades shape, using Computational Fluid Dynamic (CFD) simulations. Three optimal profiles are investigated: the profile of the existing blades, a circular profile and an elliptical profile. The results are validated performing experimental tests on the wheel with the existing profile. The numerical results show that the efficiency of breastshot wheels is affected by the blades profile. The average increase in efficiency using the new circular profile is about 4 % with respect to the profile of the existing blades.

Citation: Quaranta, E. and Revelli, R.: CFD simulations to optimize the blades design of water wheels, Drink. Water Eng. Sci. Discuss., doi:10.5194/dwes-2017-2, in review, 2017.
Emanuele Quaranta and Roberto Revelli
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version      Supplement - Supplement
 
RC1: 'review comments', Anonymous Referee #1, 15 Mar 2017 Printer-friendly Version 
AC1: 'Reply to Reviewer #1', Emanuele Quaranta, 16 Mar 2017 Printer-friendly Version Supplement 
 
SC1: 'Review comments', Yucheng Liu, 29 Mar 2017 Printer-friendly Version 
AC2: 'Answer to Reviewer 2', Emanuele Quaranta, 02 Apr 2017 Printer-friendly Version Supplement 
RC2: 'Review Comments', Anonymous Referee #2, 04 Apr 2017 Printer-friendly Version 
Emanuele Quaranta and Roberto Revelli
Emanuele Quaranta and Roberto Revelli

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Short summary
Water wheels are hydropower converters that efficiently work in low head sites (less than 6 m) and at low discharges (1.2 cubic meters per meter width maximum). Water wheels can represent an attractive solution for decentralized energy production. The scope of this work is to improve the performance of an existing water wheel changing the blades shape, using numerical simulations. An optimal profile was determined and also general recommendations for the blades design were reported.
Water wheels are hydropower converters that efficiently work in low head sites (less than 6 m)...
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