In the vertical direction of the flow, the higher effectiveness appear near the centerline of the discrete slots, but the higher heat transfer coefficient appear between two discrete slots.

• 在垂直于流动方向，缝中心线附近区域的效率较高，两缝之间区域较低；而换热系数则是相邻两个缝之间的区域较高，缝中心区域较低。