波浪驱动滑翔器工作机理分析与水下滑翔体的结构设计

发布时间：2018-04-22 21:04

本文选题：波浪驱动滑翔器 + NACA水翼　；参考：《浙江大学》2015年硕士论文

【摘要】：波浪驱动滑翔器是一种新型的水面移动观测平台,它由通过脐带缆连接的水面浮体和水下滑翔体两部分组成,利用海面以下水质点运动半径较小的特点,通过脐带缆将浮体采集到的波浪起伏运动传递到水下滑翔体,水下滑翔体上的水翼在有攻角的情况下运动,产生前进的动力,从而将海面的波浪起伏直接转换为前进的推力,实现长期的出海工作而不需要额外提供能源,通过搭载不同的传感器,可以实现各种观测功能,在资源探测、环境监测、军事侦察等各方面都有较为重大的意义。本文工作如下：(a)本在现有研究成果的基础上,本文分析了波浪驱动滑翔器的工作机理,分别对平板翼型和非平板翼型进行各过程受力分析,给出水翼翻转的依据,并给出基于升力及阻力系数的水翼分力计算方法。(b)通过流体仿真软件ANSYS CFX进行了对平板翼型和NACA四位数字翼型进行仿真对比,通过不同速度下二者的性能对比进行选择；对NACA0012翼型分别进行了多速度、多攻角仿真,并给出小攻角范围内,水翼的升力及阻力系数与攻角的数值关系；通过MATLAB对水翼进行数值仿真,并求出平均推力;通过多水翼阵列仿真分析了水翼间距对水动力性能的影响,并进行选取确定。(c)在理论分析的基础上,提出水面浮体和水下滑翔体总体的设计要求,并对水下滑翔体进行结构设计,包括水翼设计、主框架设计、整流罩设计以及附加组件连接设计等部分。(d)对整体结构进行稳定性分析,确保其具有良好的运行稳定性及抗扰动能力；通过对波长较小时浮体的理论运动轨迹和实际运动轨迹的对比,对浮体最大长度提出了设计要求。(e)对水下滑翔体模型进行下水试验。在验证理论模型的同时,分析实验数据与理论数据差异产生的原因,提出影响推力的因素,对结构设计的改进优化提供参考。
[Abstract]:The wave driven glider is a new platform for water surface movement observation. It is composed of two parts of water surface floating body and underwater glider connected by umbilical cord cable. Using the characteristics of small motion radius of the water quality point below the sea surface, the wave motion collected by the floating body is transmitted to the underwater glider by the umbilical cord cable, and the water on the underwater glider. In the case of an angle of attack, the wing moves and produces the driving force, which converts the undulating wave of the sea directly into the forward thrust, realizes the long run out of the sea without the need of additional energy. By carrying different sensors, all kinds of observation functions can be realized, and the various aspects of the source detection, environmental monitoring, military reconnaissance and other aspects are compared. The work of this paper is as follows: (a) on the basis of the existing research results, this paper analyzes the working mechanism of the wave driven glider, analyzes the force analysis of the plate airfoil and the non plate airfoil respectively, gives the basis of the hydrofoil flip, and gives the calculation method of the hydrofoil based on the lift and the drag coefficient. (b) The over fluid simulation software ANSYS CFX simulates the flat wing and the NACA four bit digital airfoil, and chooses the performance comparison of the two people at different speeds; the multi velocity and multiple angle of attack simulation of the NACA0012 airfoil are carried out respectively, and the numerical relation between the lift and the drag coefficient and the angle of attack is given within the small angle of attack. The numerical simulation of hydrofoil is carried out through MATLAB, and the average thrust is obtained. Through the simulation of the hydrofoil array, the influence of the hydrofoil spacing on the hydrodynamic performance is analyzed and selected. (c) based on the theoretical analysis, the design requirements of the surface floating body and underwater glider are proposed, and the underwater glider is designed, including water. Wing design, main frame design, fairing design and additional component connection design. (d) the stability analysis of the whole structure is carried out to ensure good operation stability and disturbance resistance. The maximum length of the floating body is designed by comparing the theoretical movement track and the actual trajectory of the floating body of the smaller wavelength. (E) the underwater glider model is tested under water. At the same time, the reason of the difference between the experimental data and the theoretical data is analyzed. The factors affecting the thrust are put forward, and the reference for the improvement and optimization of the structural design is provided.

【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P715.5;TP242

【参考文献】