EFFECTS OF EULER ANGLES OF VERTICAL CAMBERED OTTER BOARD ON HYDRODYNAMICS BASED ON RESPONSE SURFACE METHODOLOGY AND MOGA

文献类型： 外文期刊

第一作者： Wang, Gang

作者： Wang, Gang;Wan, Rong;Huang, Liuyi;Zhao, Fenfang;Wang, Xinxin;Xu, Qingchang;Li, Yuyan;Zhu, Wenbin;Wang, Lei

作者机构：

关键词： otter board; RSM; MOGA; numerical simulation

期刊名称：PROCEEDINGS OF THE ASME 38TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2019, VOL 9

ISSN： 2153-4772

年卷期： 2019 年

页码：

收录情况： SCI

摘要： In this present work, effects of three Euler angles (Angle of Attack (AOA), Angle of Trim (AOT), Angle of Pitch (AOP)) of vertical cambered otter board on hydrodynamic characteristics (drag coefficient (C-d), lift coefficient (C-l), center-of-pressure coefficients (C-p)) were studied based on numerical simulation combined with Kriging Response Surface Methodology (KRSM) and Multi-Objective Genetic Algorithm (MOGA). Wind tunnel experiments were carried out to validate the accuracy of response surface based on numerical simulation. It was demonstrated that AOA had prominent effects on C-d and C-l, while AOT and AOP had less effects. The working posture of otter board were recommended to lean inwards (0 degrees similar to 6 degrees) and forward (-10 degrees similar to 0 degrees) to improve the lift-drag ratio without sacrificing C-l. The influences of AOT and AOP on positions of center-of-pressure point were less significant than that of AOA and decreasing with the increase of AOA. In addition, response surface of hydrodynamic coefficients around the critical AOA was a decent indicator of occurrence of stall. Finally, three candidate cases were selected to satisfy the high working efficiency by MOGA, which was consistent with the above recommendations. This study provided a scientific reference of response surface experimental investigations methodology and the configuration of Euler angles of otter board.

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