Stereoscopic PIV Visualization of Flow Characteristics on a Flapping-type Tidal Turbine

Title
Stereoscopic PIV Visualization of Flow Characteristics on a Flapping-type Tidal Turbine
Author(s)
김지훈; 고진환; 박혜주; Patar Eben; 서정화; 이신형
Alternative Author(s)
김지훈; 고진환; 박혜주; Patar Eben
Publication Year
2015-09-14
Abstract
The flapping type turbine is typically operated with a swing motion activated by a given pitch motion of the hydrofoils. The power is then extracted by the oscillatory swing motion. Thus, it is important to know an interrelationship among the key parameters of the oscillation such as a frequency, a swing-amplitude, a pitch angle, a load imposed for the power extraction and so on. Therefore, this study is focused on the analysis of flow characteristics of the flapping-type turbine with its oscillated movement. Flow fields around the flapping type turbine are explored by a visualization technique based on stereoscopic particle image velocimetry (SPIV) measurement over the oscillating zone of the hydrofoils. It is found throughout the experiment studies that the oscillating frequency, the pitch angle, and the imposed load are key factors in affecting on the power extraction as well as its controllability. Eventually, the flow analysis by the PIV visualization will be utilized for obtaining the optimal design of a large scale flapping-type tidal turbine.he key parameters of the oscillation such as a frequency, a swing-amplitude, a pitch angle, a load imposed for the power extraction and so on. Therefore, this study is focused on the analysis of flow characteristics of the flapping-type turbine with its oscillated movement. Flow fields around the flapping type turbine are explored by a visualization technique based on stereoscopic particle image velocimetry (SPIV) measurement over the oscillating zone of the hydrofoils. It is found throughout the experiment studies that the oscillating frequency, the pitch angle, and the imposed load are key factors in affecting on the power extraction as well as its controllability. Eventually, the flow analysis by the PIV visualization will be utilized for obtaining the optimal design of a large scale flapping-type tidal turbine.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25307
Bibliographic Citation
The 11th International Symposium on Particle Image Velocimetry (PIV 2015), pp.1, 2015
Publisher
Visualization Society of Japan
Type
Conference
Language
English
Publisher
Visualization Society of Japan
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse