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首页> 外文会议>MTS/IEEE Charleston OCEANS Conference >Experimental Study on Cavity Characteristics of Low Speed Water Entry of Cylinder Based on High-Speed Imaging Technology
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Experimental Study on Cavity Characteristics of Low Speed Water Entry of Cylinder Based on High-Speed Imaging Technology

机译：基于高速成像技术的低速汽缸进水腔特性实验研究

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摘要

During the launching of the underwater vehicle especially in air-launching, the water entry problem is complicated. Factors such as nose shape, water entry velocity, water entry angle, surface property and specific gravity will have a profound effect on the cavity shape, which will affect the initial trajectory and attitude of underwater vehicle. A launch platform with variable launch velocity and multiple launch angle is designed and constructed independently. Launch platform, water tank, high-speed camera, floodlights and synchronizing device together constitute the experiment platform. Five kinds of nose shapes with different hemispherical angles are used. A series of experiments are carried out to investigate how nose shape, water entry velocity and water entry angle will affect the cavity characteristics. The conclusions are performed and the three different cavities (flow separation cavity, weak flow separation cavity, cavity behind the moving cylinder) formed during water entry process are observed and analyzed originally.
机译：在水下航行器的发射期间，特别是在空中发射期间，入水问题很复杂。机头形状，进水速度，进水角度，表面特性和比重等因素将对空腔形状产生深远影响，这将影响水下航行器的初始轨迹和姿态。独立设计和构造具有可变发射速度和多个发射角度的发射平台。发射平台，水箱，高速摄像机，泛光灯和同步装置共同构成了实验平台。使用五种具有不同半球形角度的鼻子形状。进行了一系列实验以研究鼻形，进水速度和进水角度将如何影响型腔特性。得出结论，并对水进入过程中形成的三个不同的腔体（分流腔，弱分流腔，动缸后腔）进行了观察和分析。

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