Flow-driven rotor simulation of vertical axis tidal turbines: A comparison of helical and straight blades SCIE SCOPUS KCI

Cited 23 time in WEB OF SCIENCE Cited 29 time in Scopus
Title
Flow-driven rotor simulation of vertical axis tidal turbines: A comparison of helical and straight blades
Author(s)
Le, Tuyen Quang; Lee, Kwang-Soo; Park, Jin-Soon; Ko, Jin Hwan
Publication Year
2014-06
Abstract
In this study, flow-driven rotor simulations with a given load are conducted to analyze the operational characteristics of a vertical-axis Darrieus turbine, specifically its self-starting capability and fluctuations in its torque as well as the RPM These characteristics are typically observed in experiments, though they cannot be acquired in simulations with a given tip speed ratio (TSR). First, it is shown that a flow-driven rotor simulation with a two-dimensional (2D) turbine model obtains power coefficients with curves similar to those obtained in a simulation with a given TSR. 3D flow-driven rotor simulations with an optimal geometry then show that a helical-bladed turbine has the following prominent advantages over a straight-bladed turbine of the same size: an improvement of its self-starting capabilities and reduced fluctuations in its torque and RPM curves as well as an increase in its power coefficient from 33% to 42%. Therefore, it is clear that a flow-driven rotor simulation provides more information for the design of a Darrieus turbine than a simulation with a given TSR before experiments.
ISSN
2092-6782
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2798
DOI
10.2478/IJNAOE-2013-0177
Bibliographic Citation
INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING, v.6, no.2, pp.257 - 268, 2014
Publisher
SOC NAVAL ARCHITECTS KOREA
Subject
HYDRODYNAMIC PERFORMANCE; DESIGN; MODELS
Keywords
Darrieus turbine; Helical-bladed; Flow-driven rotor simulation; Self-starting capability; Torque fluctuation; Tidal steam generation
Type
Article
Language
English
Document Type
Article
Publisher
SOC NAVAL ARCHITECTS KOREA
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