摘要淡水冷却系统是保证船舶正常运行的重要系统，它的作用主要用来冷却做功后产生过多热量的船舶主机、辅机系统，防止某些设备因为温度过高导致不能工作或者损坏，增加船舶运行的寿命。因此对淡水冷却系统进行仿真和监测是优化和充分发挥淡水冷却系统性能的重要一步，基于MATLAB/SIMULINK的系统仿真技术是现在应用最广泛的仿真技术，MATLAB软件能够有效的对主机，辅机的工作过程的热力水力过程进行分析，对改善淡水冷却系统的性能具有重要的研究意义。84469

    本文以12000HP油服船淡水冷却系统为研究对象，通过对淡水冷却系统原理图的剖析，对主机和辅机的换热过程建立热力水力数学模型，然后用MATLAB中SIMULINK工具进行仿真，在与12000HP油服船的试航数据相比较，从而验证仿真模块的正确性。

    WebAccess组态软件是一款实用的仿真界面的编写软件，通过Visual studio 2008语言程序实现SIMULINK与Access数据库的连接，然后通过DSN系统连接WebAccess与Access数据库。持续的将SIMULINK的运行参数输入到WebAccess中，实现对淡水冷却系统的实时监测。

毕业论文关键词：12000HP油服船；淡水冷却系统；SIMULINK；建模仿真；WebAccess

Abstract    Fresh water cooling system is an important system to ensure that the normal operation of the ship, its role is mainly used for cooling engine and auxiliary system after producing more heat and preventing certain equipment from working or damaging because the temperature is too high and increasing the life of the ship's operation。 Therefore it is an important step to simulate and monitor the fresh water cooling system which optimizes and makes full use of the performance of fresh water cooling system 。Technology based on MATLAB / SIMULINK simulation  is now the most widely used simulation technology, the MATLAB software can effectively analye hydraulic and thermal process of engine and auxiliary work process, which has important value to improve the performance of the fresh water cooling system。

    This paper sees 12000HP OSV fresh water cooling system as the object of study, according to analyse fresh water cooling system schematics, heat transfer process of the main and auxiliary thermodynamic and hydrodynamic mathematical model was established, then using SIMULINK tools in MATLAB to simulate, finally compared with 12000HP service ship trial data to verify the correctness of the simulation module。

    WebAccess configuration software is a practical simulation interface programming, Connecting Visual studio 2008 language program to achieve SIMULINK and Access database connection and then connecting the DSN system to the WebAccess and Access database, it continuously inputs the operating parameters of SIMULINK to the WebAccess and achives the monitoring of fresh water cooling system。

Key words: 12000HP OSV; fresh water cooling system; SIMULINK; modeling and simulation；WebAccess

目  录

第一章  绪论 1

  1。1 选题的目的和意义 1

  1。2 国内外研究现状及存在的问题 2

    1。2。1 建模与仿真的国内外研究动态 2

    1。2。2淡水冷却系统仿真的国外研究现状 2

    1。2。3淡水冷却系统仿真的国内研究现状 4

    1。2。4淡水冷却系统目前存在的主要问题 4

  1。3本文的主要工作及论文结构 4