毕业论文移动版

摘要随着国际上原油价格的飞速上涨,以及全球环境的日益恶化,“节能减排”成为了航运业中人们最为关注的问题。因此，日韩等先进国家都开始了对风帆船的重新认识,并以现代技术手段对其进行改进,其中航运大国日本已在万吨级货船上采取用电脑进行控制的风帆助航，节油率可达15%。本文针对风帆助力船的智能控制相关内容开展研究，对于促进风帆助航技术的发展具有重要的工程意义。84111

本文通过对传统型风帆进行有限元建模，并对其进行流体性能的计算，得到了升阻系数及升阻力等相关数据。根据流体性能计算的结果，分析了同种风帆在不同工况下的流体性能。在此基础上，还对比分析了不同风帆在相同工况下的流体性能。通过对比分析传统型风帆及圆弧形风帆的流体性能，得出圆弧形风帆的流体性能较传统型风帆更优。基于对传统型风帆的流体性能分析，本文还对传统型风帆推力实验的实验方案进行了初步设计，为后续实验方案的实施提供了参考，保障了实验能顺利实施。

毕业论文关键词:风帆助航技术，流体动力学，攻角，升阻系数

Abstract With the rapidly rising of oil prices and deterioration of global environment, energy-saving and emission reduction have become the most important issues in shipping industry。 So , some advanced countries gain a new awareness of sail ship, use modern technology to improve the sail ship, and create sail-assisted ship。Shipping big country Japan has used computer to control the sail-assisted system in the million ton cargo ship, rate of economizing gasoline is 15%。 This thesis discussed the concerning content about the intelligent control of the sail-assisted ship。 It has important engineering significance to promote the development of the sailing technology。

In this paper, the finite element model of the traditional model is carried out, and the performance of the fluid is calculated, from that can get the some important data like lift drag coefficient。 According to the result of the calculation of fluid performance, the performance of the same kind of sail in different working conditions is analyzed。 On the basis of this, the performance of different sailing in the same condition is also compared and analyzed。 By comparing and analyzing the performance of the traditional sailing and circular arc, it is concluded that the fluid performance of the circular arc is better than that of the traditional type。 Based on the fluid properties of traditional sailing analysis, this paper also on traditional sails thrust test experiment scheme were preliminary design, To provide a reference for the implementation of the follow-up experimental program, to ensure the smooth implementation of the experiment。 

Key words: Sail-assisted Technology, Hydrodynamics, Attack Angle, Lift Drag Coefficient

目录

第一章 绪论 1

1。1本文的研究背景及意义 1

1。2国内外研究现状 2

1。2。1国外研究现状 2

1。2。2国内研究现状 5

1。3本文的主要研究内容 5

第二章 风帆流场计算的基本理论 7

2。1 空气动力学 7

2。1。1 机翼理论 7

2。1。2 风帆升力线理论 7

2。1。3 边界层理论 8

2。2 流体动力学 9

2。2。1 基本控制方程 (责任编辑：qin)