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재현된 반류의 영향을 받는 프로펠러 후류 내 불안정한 날개끝 보오텍스 구조에 대한 정량적 가시화Visualization of Unstable Vortical Structure in a Propeller Wake Affected by Simulated Hull Wake

Other Titles
Visualization of Unstable Vortical Structure in a Propeller Wake Affected by Simulated Hull Wake
Authors
김경열백부근안종우
Issue Date
1-12월-2008
Publisher
대한 조선학회
Keywords
Propeller wake; Hull wake; PIV; Tip vortex; vorticity
Citation
대한 조선학회 논문집, v.45, no.6, pp 132 - 143
Pages
12
Journal Title
대한 조선학회 논문집
Volume
45
Number
6
Start Page
132
End Page
143
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/1369
Abstract
The characteristics of complicated propeller wake influenced by hull wake are investigated by using a two-frame PIV (Particle Image Velocimetry) technique. As the propeller is significantly affected by the hull wake in a real marine vessel, the measurements of propeller wake under the hull wake would be certainly necessary for more reliable validation and the prediction of numerical simulation with wake modeling. Velocity field measurements have been conducted in a medium-size cavitation tunnel with a hull wake. Generally, the hull wake generated by the boundary layer of ship’s hull produces the different loading distribution on the propeller blade in both upper and lower propeller planes. The difference of the propeller wake behaviors caused by the hull wake is discussed in terms of axial velocity, vorticity and turbulence kinetic energy distribution in the present study.
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