压浪板对游艇阻力与姿态影响的研究

发布时间：2018-05-19 00:21

本文选题：游艇 + 数值水池　；参考：《集美大学》2015年硕士论文

【摘要】：航行阻力与姿态是高性能船舶水动力性能研究的基础,直接反映了船艇的快速性、稳性、耐波性的优劣,针对阻力与姿态的优化始终是高速艇优化设计的重要内容。经过多年研究与应用经验的积累,发现单纯依靠型线优化,难以满足船艇在复杂海况和大航速范围内始终保持最佳的水动力性能,而附体可以针对性的调整船艇在航行中的受力情况,是使高速艇性能进一步得到优化的有效手段,压浪板便是一种常用于高速艇附体。从艇型特点和航速范围判断,多数高速游艇均属于处于过渡航行状态的滑行艇,即处在介于典型高速排水型艇和滑行艇之间的灰色地带,针对于该型艇的阻力性能及航行姿态的研究较少,压浪板在游艇上的应用缺乏理论和试验数据的指导。针对以上问题,本文将进行以下3个方面的研究：(1)比较并选择游艇阻力与姿态计算方法,对压浪板游艇进行数值水池仿真计算。将萨维斯基法和ЦАГИ方法等基于半理论半经验公式的适用于高速艇的阻力与姿态计算方法用于该艇,并通过与水池试验比较,分析误差来源,确定其是否可直接应用于游艇的计算。以STAR CCM+为软件平台,建立数值拖曳水池,计算游艇直航过程中升沉、纵倾运动航行阻力。在此基础上,对比游艇裸艇体和附装压浪板艇体的静水拖曳试验,分析安装压浪板对艇体绕流的影响,及游艇阻力与姿态的变化,研究压浪板对游艇产生影响的作用机理。(2)压浪板结构尺寸对游艇的影响分析。进行带压浪板的游艇航行的数值模拟,并建立带压浪板的游艇静水直航的受力模型,研究压浪板长度、安装角度与压浪板安装效果对游艇阻力和姿态的影响关系,通过与数值模拟结果比对,对理论推导结果进行修正和完善,获得压浪板长度、安装角度变化对压浪板安装效果影响的曲线,确定游艇航行中对应不同航速的压浪板安装角度的适当范围。(3)压浪板对游艇垂荡和纵摇的影响。采用数值造波技术,制造高阶规则波,对游艇的迎浪航行进行模拟,并通过对裸艇体和带压浪板艇体在波浪中航行受力与运动的对比,研究安装压浪板对游艇垂荡和纵摇的周期、幅度等方面的影响。
[Abstract]:Navigation resistance and attitude are the basis of the research on the hydrodynamic performance of high performance ships, which directly reflect the merits and demerits of the ship's rapidity, stability and wave resistance. The optimization of the resistance and attitude is always the important content of the optimum design of the high speed craft. After many years of research and application experience, it is found that it is difficult to satisfy the optimal hydrodynamic performance of the ship in the range of complex sea conditions and large speed by simply relying on the optimization of the profile. The appendage can adjust the force of the boat in navigation, and it is an effective means to optimize the performance of the high-speed boat. The wave plate is often used in the attached body of the high-speed boat. Judging from the characteristics of the boat and the range of speed, most high speed yachts belong to the skidding boat in the transitional navigation state, that is, in the grey area between the typical high-speed drainage boat and the skidding boat. There is little research on the resistance performance and navigation attitude of this type of boat, and the application of the wave plate in the yacht lacks the guidance of theoretical and experimental data. Aiming at the above problems, this paper will compare and select the calculation methods of the resistance and attitude of the yacht from the following three aspects: 1) and carry out the numerical pool simulation calculation of the wave-plate yacht. The resistance and attitude calculation methods based on semi-theoretical and semi-empirical formulas, such as Savitsky method and Sawesky method, are applied to the calculation of the resistance and attitude of the high speed boat. The error sources are analyzed by comparing with the tank test. Determine whether it can be directly applied to the calculation of yachts. Based on STAR CCM software platform, a numerical towing tank is established to calculate the sailing resistance during the direct sailing of the yacht. On the basis of this, the static water towing tests of the naked hull and the boat body with the pressure wave plate are compared, and the influence of the installation of the pressure plate on the flow around the hull and the change of the resistance and attitude of the yacht are analyzed. The influence mechanism of wave plate on yacht is studied. (2) the influence of structure size of wave plate on yacht is analyzed. In this paper, the numerical simulation of the sailing of a yacht with a wave plate is carried out, and the force model of the straight sailing of a yacht with a wave plate is established. The relationship between the length of the pressure plate, the angle of installation and the effect of the installation effect on the resistance and attitude of the yacht is studied. By comparing with the numerical simulation results, the theoretical derivation results are modified and perfected, and the curves of the influence of the length and the installation angle on the installation effect of the wave pressing plate are obtained. Determine the appropriate range of the installation angle of the wave-plate corresponding to different speed in sailing.) the influence of the sagging and pitching of the yacht by the wave-plate. The numerical wave-making technique is used to make high-order regular waves to simulate the sailing of yachts, and the comparison between the force and motion of the naked hull and the hull with pressure wave plate in the wave is carried out. The influence of installing wave plate on the period and amplitude of hovering and pitching of the yacht is studied.
【学位授予单位】：集美大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U674.91;U661.7

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