多圆柱体测波浮标的橫摇性能分析
Analysis of roll motion for multi-cylinder wave measurement buoy
投稿时间:2019-12-30  修订日期:2020-03-26
DOI:
中文关键词:  橫摇性能  多圆柱体浮标  海浪参数
英文关键词:roll motion character  cylindrical buoy  wave parameter
基金项目:无人机用XCTD项目;国家重点研发计划重点专项课题(2016YFC1400501)。
作者单位E-mail
尼建军 海军装备部驻天津地区第一军事代表室 joe_ni787@sina.com 
李宏武 海军装备部驻天津地区第一军事代表室 joe_ni787@sina.com 
魏晓辉 国家海洋技术中心  
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中文摘要:
      橫摇性能是评价浮标在海上运动稳定性的重要参数之一,它直接影响浮标在海中漂浮的姿态和对天线束宽的要求,这对于卫星通讯浮标尤为重要,因此大多数的浮标主体外形为横摇性能较好的球体,但是球体浮标不适合被无人机携带。为了设计一种用于空投橫摇性能较好的圆柱体浮标,通过研究圆柱体浮标尺寸形状与橫摇性能的关系,分析不同尺寸下圆柱体浮标橫摇性能随直径与高度的比值(径高比)的变化趋势,并分析同种海况下球体浮标橫摇性能随直径的变化趋势作为对比,发现圆柱体浮标的横摇放大因子随径高比增大而先增大后减小,从而确定多圆柱体浮标的设计方案,数值模拟该形状浮标在5级海况下的橫摇性能,计算得到稳定状态下的最大橫摇角度小于20度,另外进行了海上试验,浮标在有效波高为1m的海浪中的最大横摇倾角约为16度,符合设计要求。
英文摘要:
      Rolling motion is one of the most essential parameters of marine motion for buoys, which directly influence, particularly satellite communication buoys, attitudes of buoy floating and demands of antenna beam width. Hence, most wave measurement buoys are spherical main structure result from its excellent rolling motion character, whereas the spherical buoys are not suitable for carrying by unmanned aerial vehicle. In order to design a cylindrical wave measurement for air-launching with fine performance of rolling, the relation between overall dimensions of cylindrical buoy and rolling motion is researched by analyzing the tendency of rolling motion character for cylindrical buoy with diameter-height ratio (D-H ratio) variation, which is compared with the tendency of rolling motion character for spheroid buoy with diameter variation. It is obviously that the amplified factor of rolling motion increases firstly and then reduces with the raising of D-H ratio. A multi-cylinder wave measurement buoy is design according to the results of this analysis. And its rolling motion under the sea condition of 5 levels is calculated by numerical simulation and result shows that the maximum angle of rolling in stable condition, less than 20 degrees. In addition, the maximum angle of rolling under the condition of waves whose significant wave height was 1.1m was approximately 16 degrees according to marine experiment, which can meet the demands of design.
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