Effects of Gurney Flap on the performance of Diffuser Augmented Wind Turbines

Conference paper (2017)

Authors

V.V. Dighe Wind Energy - Aerospace Engineering
F. Avallone Wind Energy - Aerospace Engineering
J. Tang Wind Energy - Aerospace Engineering
G.J.W. van Bussel Wind Energy - Aerospace Engineering
Research Group
Wind Energy (Aerospace Engineering) (TU Delft)
More Info
expand_more

Published Date

2017

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Wind Energy

Abstract

In this paper, a numerical investigation on the effect of gurney ap (GF) on the performance of a diffuser augmented wind turbine (DAWT) is presented. The flow-field around the DAWT is obtained by solving the Reynolds-averaged-Navier-Stokes (RANS) equations. The turbine is modelled as an uniformly loaded actuator disc (AD) that imposes a resistance to the passage of the flow. Comparison of the numerical results with experimental measurements in similar conditions shows that the numerical approach used satisfactorily reproduces the mean flowfield. GF heights equal to 2% and 4% of the diffuser chord length were investigated. Results show that separation induced by GF creates a low pressure region at the diffuser exit, that increases the mass ow through the diffuser and the power coeffcient of the DAWT.

Files

6.2017_1382.pdf
(.pdf | 9.37 Mb)

Download not available