NDLI: Optimization of diffuser geometry for an horizontal axis shrouded hydro turbine

Content Provider	IEEE Xplore Digital Library
Author	Daniele, E. Coiro, D.P.
Copyright Year	2013
Description	Author affiliation: Dept. of Ind. Eng., Univ. degli Studi di Napoli “Federico II”, Naples, Italy (Daniele, E.; Coiro, D.P.)
Abstract	The present thesis work concerns the optimization of the shroud of an horizontal axis hydro turbine (HAHT). The main aim is to improve the hydro-turbine efficiency by designing a new shroud airfoil through an optimization process that maximize, as objective function, the power coefficient. The optimization process was carried out by MATLAB©on the supercomputing infrastructure SCoPE of the University of Naples. Results are obtained with CFD calculations, namely by STARCCM+ for an axisymmetric model, taking advantage of the symmetry of the problem, to minimize the computational time; in addition the HAHT is simulated with an actuator disk that gave reliable results in good agreement with previous works, developed with different software, and with experimental results. The original airfoil was designed for high-lift regimes, so it already gave excellent performance in these kind of applications. For that reason, was not expected a very high increase of the power coefficient. Nevertheless the optimization process results into a power coefficient increase of 5.2%, with respect to the original airfoil.
Sponsorship	IEEE Ind. Electron. Soc.
Starting Page	240
Ending Page	247
File Size	590149
Page Count	8
File Format	PDF
ISBN	9781467344296
e-ISBN	9781467344302
DOI	10.1109/ICCEP.2013.6586996
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-11
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atmospheric modeling Rotors Polynomials Automotive components Optimization Turbines
Content Type	Text
Resource Type	Article

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