涡轮叶片尾缘针肋的换热研究

Heat transfer in the tail section of channel of cooling blade with pin-fin arrays

以涡轮叶片尾缘中针肋通道的换热为研究对象,讨论并计算出了一定条件下获得最大针肋通道换热量时针肋的形状曲线和换热优势,系统分析了这种拥有最佳形状曲线针肋的通道散热量随针肋物性参数及几何特征变化的规律.

Heat transfer in the tail section of channel of cooling blade with pin-fin arrays is studied. According to the theoretical calculation, a curvilinear pin-fin shape is acquired which make the maximum heat transferred under certain conditions. The quantity of heat transferred is compared with that of corresponding cylindrical pin-fin arrays to show the advantage. Finally, the relations of the heat transfer to the rib's physical parameters or geometrical characters are analyzed systematically.