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A Comparative Study on Hydrodynamic Performance of double deflector rectangular cambered otter board

Journal of Ocean University of China 2018年第5期17卷 1218-1224页

作者： XU Qingchang FENG Chunlei HUANG Liuyi XU Jiqiang WANG Lei ZHANG Xun LIANG Zhenlin TANG Yanli ZHAO Fenfang WANG Xinxin College of Fisheries Ocean University of China East China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Marine College Shandong University

In the present work,the hydrodynamic performance of the double deflector rectangular cambered otter board was studied using wind tunnel experiment,flume tank experiment and numerical *** showed that the otter board had a good hydrodynamic performance with the maximum lift-to-drag ratio(K_(MAX) = 3.70).The flow separation occurred when the angle of attack(AOA) was at 45?,which revealed that the double deflector structure of the otter board can delay the flow *** simulation results showed a good agreement with experiment ones,and could predict the critical AOA,which showed that it can be used to study the hydrodynamic performance of the otter board with the advantage of flow ***,the drag coefficient in flume tank was much higher than that in wind tunnel,which resulted in a lower lift-to-drag *** may be due to different fluid media between flume tank and wind tunnel,which result in the big difference of the vortexes around the otter *** the otter boards are operated in water,it was suggested to apply both flume tank experiment and numerical simulation to study the hydrodynamic performance of otter board.

关键词： wind tunnel experiment flume tank experiment numerical simulation double deflector rectangular cambered otter board hydrodynamic performance

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