Modeling And Simulation Of The Semi-Submerged Ship Diesel Generator Engine Auxiliary System

With the rapid development of the Chinese economy,the demand of energy source is more and more large.The importance of offshore oil' exploitation and development is increasingly outstanding.Due to the need of offshore oil's exploiting and developing,it is urgent to find reliable conveyance and equipment that has the ability to pinpoint position at sea.Since the large-scaie semi-submerged vessel has advantages on such aspects,doing research and exploit On the semi-submerged vessel has new significance and practical application value.The thesis was based on the modeling and simulated research objects of the lubricating oil system,fuel oil system and cooling water system of the "TAI AN KOU" semi-submerged vessel' main diesel generator engine.The author has done thermodynamic analyses for the heat dissipation of diesel engine and auxiliary system based on thermodynamics,heat transfer and fluid mechanics theory.Then,the author got the auxiliary system's dynamic thermodynamic model.The major work is showing below:1.Aiming at auxiliary system simulation target of the semi-submerged vessel's main diesel generator engine,the fuel oil system,lubricating oil system,high temperature cooling water system and the low temperature cooling water system had been abstracted and modeled.The author has set up their thermal exchange mathematical model and dynamic thermodynamic system model;2.The thesis make simulation experiment on the various diesel engine running conditions.Then dynamic change characteristics of auxiliary system were analyzed.3.Used Visual C to develop monitor interface,realize some operating and displaying functions of auxiliary systems,the conditions of auxiliary systmas can be monitored real time.The technique and the result illuminated in this thesis can be used to analyze semi-submerged vessel's characters and operating teaching training.