Numerical investigation on the effects of slotted height on performance of louver and slit fins at different fin pitches

In this paper, the effects of slotted height at different fin pitches are analyzed in detail, aiming to investigate function and optimal ratio pitch. cases high Reynolds number for louver fin, ?bimodal phenomenon? heat transfer coefficient begins appear with increasing height. As is about half pitch, has a local minimum value, which there two peaks on both sides. However, pressure drop been The under more instructive than angle. For slit increases first then decreases height, so does drop. Meanwhile, as 0.3~0.45 times 0.5~0.65 pitch respectively, comprehensive performance can reach maximum. general, higher fin. assigned 1.8 mm large roughly similar