A1 Journal article (refereed), original research

Experimental and numerical analysis of vaned wind turbine performance and flow phenomena


Publication Details
Authors: Grönman Aki, Backman Jari, Hansen-Haug Markus, Laaksonen Mikko, Alkki Markku, Aura Pekka
Publisher: Elsevier
Publication year: 2018
Language: English
Related Journal or Series Information: Energy
Journal acronym: Energy
Volume number: 159
Start page: 827
End page: 841
Number of pages: 15
ISSN: 0360-5442
eISSN: 1873-6785
JUFO-Level of this publication: 3
Open Access: Not an Open Access publication

Abstract

One feature in the ongoing energy transition is that the energy is more
often produced close to its final utilizer. The operated device should
be reliable to use and it should not annoy the people. Also, the size of
the power production module may have limits that are not to be
exceeded. One of the solutions is to use vaned Savonius turbines with a
low-solidity vane design. It provides a relatively small physical size
with low flickering and noise emissions, in addition to its improved
starting behaviour in low winds. However, the performance of such a
turbine is not well documented in the relevant literature and its
internal flow physics are not well known. From this background the
current study presents an experimental test case, coupled with validated
numerical simulations, for a vaned Savonius turbine and performs what
is so far the most complete fluid dynamic analysis of its performance
and flow phenomena. The key novelties are that separate experimental and
numerical results are presented with and without the stator in order to
study the stator-rotor interaction, including accurate static pressure
measurements inside the turbine. In addition, a general flow model is
presented.


Last updated on 2019-13-03 at 12:00