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http://dx.doi.org/10.3795/KSME-B.2014.38.10.797

Numerical Investigation of Drag and Lift Characteristics of Cavitator of Supercavitating Underwater Vehicle  

Kang, Byung Yun (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Jang, Seyeon (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Kang, Shin-Hyoung (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.38, no.10, 2014 , pp. 797-805 More about this Journal
Abstract
The purpose of this study was to investigate the drag and lift characteristics of the cavitator of a supercavitating underwater vehicle and the pressure loss due to water intake. These investigations were performed by changing the diameter, velocity, radius of curvature of the intake, and angle of attack of the cavitator. With increasing ratio of the intake diameter to the cavitator diameter ratio($d/D_1$), the drag coefficient and the pressure loss coefficient of the water intake decreased. The greater the increase in the ratio of the intake velocity-to-free stream velocity ratio(S), the smaller was the decrease in the drag coefficient and the lift coefficient. When the intake had a radius of curvature(c), the pressure loss coefficient decreased. On the contrary, the effect of the radius of curvature on the drag coefficient was imperceptible. For angles of attack (${\alpha}$) of the caviatator in the range of $0^{\circ}$ to $10^{\circ}$, the drag coefficient and the pressure loss coefficient changed slightly, whereas the lift coefficient increased linearly with increasing angle of attack.
Keywords
Supercavitating Underwater Vehicle; Cavitator; Drag; Lift; Pressure Loss;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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