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Cited 27 time in webofscience Cited 34 time in scopus
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Analysis of wake behind a rotating propeller using PIV technique in a cavitation tunnel

Authors
Paik, Bu-GeunKim, JinPark, Young-HaKim, Ki-SupYu, Kwon-Kyu
Issue Date
3월-2007
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
two-frame PIV; propeller wake; phase-averaging; tip vortex; trailing vorticity; convection velocity; swirling strength
Citation
OCEAN ENGINEERING, v.34, no.3-4, pp 594 - 604
Pages
11
Journal Title
OCEAN ENGINEERING
Volume
34
Number
3-4
Start Page
594
End Page
604
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/1412
DOI
10.1016/j.oceaneng.2005.11.022
ISSN
0029-8018
Abstract
A two-frame particle image velocimetry (PIV) technique is used to investigate the wake characteristics behind a marine propeller with 4 blades at high Reynolds number. For each of 9 different blade phases from 0 degrees to 80 degrees, 150 instantaneous velocity fields are measured. They are ensemble averaged to study the spatial. evolution of the propeller wake in the region ranging from the trailing edge to one propeller diameter (D) downstream location. The phase-averaged mean velocity shows that the trailing vorticity is related to radial velocity jump, and the viscous wake is affected by boundary layers developed on the blade surfaces and centrifugal force. Both Galilean decomposition method and vortex identification method using swirling strength calculation are very useful for the study of vortex behaviors in the propeller wake region. The slipstream contraction occurs in the near-wake region up to about X/D = 0.53 downstream. Thereafter, unstable oscillation occurs because of the reduction of interaction between the tip vortex and the wake sheet behind the maximum contraction point. (c) 2006 Elsevier Ltd. All rights reserved.
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