| 摘要 |
<p>Multiple wave-like concavities and convexities, which are formed in corrugated fins, are formed from a smooth curved surface such that the angle formed by crest lines (43) and trough lines (44) and the main flow of a first heat exchange fluid is an acute angle, and the crest lines (43) and the trough lines (44) are repeated continuously multiple times in a V-shape, and the mean of the angle formed by a slanted region (43b) of the crest lines (43) and the main flow of the first heat exchange fluid is less than the mean of the angle formed by a slanted region (45b) of an intermediate line (45) and the main flow of the first heat exchange fluid. Thus, separation and a localized increase in the speed can be suppressed and a secondary flow of fluid can be generated, a region having a large local thermal flow speed can be reinforced and heat transfer can be promoted, the shear stress at a region having a large local shear stress can be reduced, and flow resistance can be reduced.</p> |
