궤도차량용 보조동력장치 발전기 냉각팬 유동특성에 관한 수치해석

다국어 초록 (Multilingual Abstract)

Recently, Use of Auxiliary power unit(APU) is increasing by growing demand for improvement of insufficient electric power and installation of emergency generation devices in military tracked vehicles and civil markets. And the trend is that the units are demanded for smaller size, lighter weight and higher output power, etc to suit consumer demands. To achieve these, cooling system and heat transfer characteristic investigations becomes very important designing factor. This paper is performed to get a useful data of thermal characteristics in the engine room of APU by experimental study. As a results, the temperature distribution data and rotational speed variation obtained and they will serve as useful design data for performance improvement in APU.