简介台湾海洋大学水下噪音暨流体动力研究状况(柯永泽)

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简介台湾海洋大学水下噪音暨流体动力研究状况

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(g_ h-?"^0z ]2\0【作者】柯永泽 【作者单位】国立台湾大学系统工程暨造船学系

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8F1U)`^&Y'}0【论文摘要】 本研究将分三部分简介台湾海洋大学(National Taiwan Ocean uni.NTOU)水下噪音暨流体动力研究概况,第一部份是介绍新翼形(new foil section)应用于操作于斜轴状沉下之快艇螺桨性能改善,对象是针对空化系数介于0.75与0.5之间的螺桨,目的是如何防止严重的表面空化以致造成推力突降(thrust breakdown)与效率大幅下降,以及如何防止螺桨背面之浸蚀尤其是根部。第二部分是介绍本校低背景噪音大型空蚀水槽的基本性能以及于此水槽所进行的各种相关实验。第三部分是介绍螺桨噪音源的预测方法,包含螺桨片状空泡 (sheet cavitation)以及非定常力对船体所造成的激振力以及对水下所造成的声场计算。水利论文Cf}w G7~u ir,i G

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【英文论文摘要】 In this paper,some studies on underwater acoustics and hydrodynamics at National Taiwan Ocean University will be introduced in three parts.The first part is concerning the application of new foil section to improve the performance of propellers operating at inclined shaft conditions.Besides,the measures how to prevent serious thrust breakdown at low cavitation number, and how to prevent erosion at back and root are also introduced.The second part is to describe the basic performance of the large cavitation tunnel at National Taiwan Ocean University.The third part is to introduce the theoretical development of the prediction method for propeller noise source and the propeller induced pressure fluctuation on ship stern and underwater acoustic field.

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TAG: 海洋 流体 台湾 柯永泽 动力
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