NDLI: Investigation of Wells turbine performance using 3-D CFD

Content Provider	IEEE Xplore Digital Library
Author	Watterson, J.K. Raghunathan, S.
Copyright Year	1996
Description	Author affiliation: Dept. of Aeronaut. Eng., Queen's Univ., Belfast, UK (Watterson, J.K.)
Abstract	The aerodynamics of the Wells air turbine has been studied using a three-dimensional, unstructured mesh flow solver for the Reynolds-averaged Navier-Stokes equations. Calculations have been performed for a monoplane device comprised of six blades at a stagger angle of 90 degrees under the conditions: Reynolds number equal to 8/spl times/10/sup 5/, tip Mach number 0.4, solidity 0.5 and hub to tip ratio 0.6. Four flow coefficients representative of low, medium and high loading conditions have been considered. It is shown that the method is able to predict with reasonable accuracy the variation of pressure drop across and efficiency of the turbine with flow coefficient. However, stalling of the device is predicted too early. It is suggested that, counter to the received wisdom, the effect of the tip clearance flow is more significant in the process of turbine stall than the flow at the hub. The incidence at the hub is actually lower than at the tip, and it is hypothesized that this is due to the higher local solidity at the hub.
Starting Page	1777
Ending Page	1782
File Size	578072
Page Count	6
File Format	PDF
ISBN	0780335473
ISSN	10893547
DOI	10.1109/IECEC.1996.553371
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-08-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Turbines Computational fluid dynamics Blades Aerodynamics Aerospace engineering Navier-Stokes equations Accuracy Counting circuits Pollution Power generation economics
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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