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http://dx.doi.org/10.5407/jksv.2019.17.2.025

Vane deployer with a hydrofoil array for enhanced lift-to-drag ratio at wide range of angle of attack  

Park, Jooyeon (Department of Mechanical & Aerospace Engineering, Seoul National University)
Park, Hyungmin (Department of Mechanical & Aerospace Engineering, Seoul National University)
Publication Information
Journal of the Korean Society of Visualization / v.17, no.2, 2019 , pp. 25-31 More about this Journal
Abstract
A device that consists of an array of hydrofoils (called a vane deployer) is widely used in ocean engineering. In general, the vane deployer has to spread out efficiently, which is possible by enhancing the lift-to-drag ratio. In the present study, using a computational fluid dynamics, we investigate the effect of hydrofoil arrangement on the lift-to-drag ratio to establish the condition in which a reasonable level of constant lift-to-drag ratio is achieved in a wide range of angle of attack, to avoid a degradation of the hydrodynamic performance. First, the flow around two-dimensional hydrofoil array is examined by varying the size of hydrofoil components, gap between the hydrofoils, and arrangement type. As a result, we determine the optimized hydrofoil array configuration whose lift-to-drag ratio is nearly independent on the angle of attack. Finally, a three-dimensional simulation is performed for the optimized geometry to estimate the performance of actual vane deployer.
Keywords
Vane Deployer; Hydrofoil Array; Lift-to-drag Ratio;
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