Pressure Drop and Heat Transfer Characteristics of Internal Flow of the Rectangular Tube for Automobile Heat Exchanger

차량용 열교환기 사각관 내부 흐름에서 압력강하 및 열전달 특성

The present work was performed to investigate the thermal and hydraulic characteristics of flow inside the plain and turbulator flat tubes for the automobile application. The pressure drop and heat transfer coefficient at laminar, transition and turbulent regimes were studied experimentally and numerically. The flow transition was confirmed by flow visualization and quantitative data. It is proposed equations for the friction and heat transfer coefficient in the fully developed laminar flow inside rectangular tube as function of aspect ratio.