EFFECT OF DIMPLE ARRANGEMENTS ON THE TURBULENT HEAT TRANSFER IN A DIMPLED CHANNEL

被引：0

作者：

Lee, Y. O. ^{[2
]}

Ahn, J. ^{[1
]}

Kim, J. ^{[3
]}

Lee, J. S. ^{[4
]}

机构：

[1] Kookmin Univ, Sch Mech Engn, Seoul, South Korea

[2] Korea Power Engn Co, Yongin, South Korea

[3] Seoul Natl Univ Sci & Technol, Dept Mech Syst Design Engn, Seoul, South Korea

[4] Seoul Natl Univ, Sch Mech & Aerosp Engn, Seoul, South Korea

来源：

JOURNAL OF ENHANCED HEAT TRANSFER | 2012年 / 19卷 / 04期

关键词：

dimpled channel; large eddy simulation; heat transfer; pressure drop; LARGE-EDDY SIMULATION; FINITE-VOLUME METHOD; COMPLEX GEOMETRIES; FLOW;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Large eddy simulations (LES) have been conducted for the flow and heat transfer in a dimpled channel at the bulk Reynolds number of 20,000 to study the effect of dimple arrangements. Dimples are placed on one side of the channel in three canonical arrangements: in-line, staggered, or with cylindrical grooves. Heat transfer is not actively augmented at the spanwise gap between dimples for the in-line arrangement, while the problem can be cured by adopting the staggered arrangement. The cylindrical grooves provide heat transfer enhancement effect as much as the staggered arrayed dimples do.

引用

页码：359 / 367

页数：9

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