大型客机驾驶舱快速冷却过程的气流组织数值模拟及优化-供热、供燃气、通风及空调工程专业论文.docx

ABSTRACT With the development of civil aviation in our country and the improvement of peoples consumption level, more and more people will choose airplane as their main means of transport because of its safety and convenience. Different from other ordinary means of transport, passengers need to stay in a very limited space several hours long, or dozens of hours on the airplane, so it is particularly important for the environment in aircraft to be comfort and healthy. As the important operation platform of aircraft safety flight, the cockpit internal driving environment plays a very important role for drivers’ body healthy, mind clearly, feeling comfortable and operating correctly. Relative to the cabin, the cockpit is a narrow space with huge impact from many electronic heating equipment and solar radiation, so the research on aircraft cockpit is a very important topic. In hot summer season, if the airplane in the ground stays a long time, strong solar radiation and hot air heat transfer will result in high air temperature in the cockpit. Therefore, before a formal boarding of the passengers the airplane must be to rapid cooling, and cooling method is usually adopted the APU into low temperature cold air to the cockpit. In the process of rapid cooling, the environmental control system in the cockpit can satisfy air temperature in the aircraft cockpit decreased from 40~50 ℃ high temperature to the temperature appropriate for cockpit crew through a certain period of time. This is my article research content. This topic research, first of all, according to the real model of a certain type of aircraft cockpit we built the Gambit mesh model which is suitable for the FLUENT software to calculate. We compiled the UDF input program as the cockpit wall temperature boundary which was considering the effect of heat transfer and solar radiation. Then, we calculated the fast cooling process of the cockpit start-up phase in an unsteady numerical simulation, and analyzed the tempe