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Effect of cross-cut on heat transfer performance and pressure drop in wavy fin

DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.420
pages 486-488

Gun Woo Kim
Department of Mechanical and Information Engineering, The University of Seoul, Seoulsiripdaero 163, Dongdaemun-gu, Seoul 02504, Republic of Korea

Hyun Muk Lim
Graduate School of Mechanical and Information Engineering, University of Seoul, Seoul, Korea

Seo Young Kim
Thermal/Flow Control Research Center, Korea Institute of Science and Technology, Seoul 130-650, Korea

Gwang Hoon Rhee
Department of Mechanical and Information Engineering, The University of Seoul 90, Jeonnong-dong, Dongdaemun-ku, Seoul, 130-743, Korea


The effect of cross-cut on the heat transfer performance and the pressure drop in a laminar wavy fin was assessed by CFD method. The concept of cross-cut is cutting fin in a direction perpendicular to the flow direction. A five-waved wavy fin with 20 degree corrugation angle was used as the two-dimensional geometry of simulation. The Cross-cut was applied at the region of right after 3rd wave peak with 0.2Dh length. As a result, the heat transfer was increased maximum 20.3% more than that of no cut wavy fin. The pressure drop was also increased maximum 6.8%. The heat transfer performance was enhanced because cutting makes flow at the middle can attach to the fin wall.

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