Numerical investigation of flow field and heat transfer in cross-corrugated ducts

被引：49

作者：

Blomerius, H ^{[1
]}

Hölsken, C ^{[1
]}

Mitra, NK ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Inst Thermo & Fluiddynam, D-44780 Bochum, Germany

来源：

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 1999年 / 121卷 / 02期

关键词：

flow instability; flow separation; forced convection; heat exchanger; numerical methods;

D O I：

10.1115/1.2825982

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Flow field and heat transfer in sine-wave crossed-corrugated ducts have been investigated by numerical solution of the Navier-Stokes and energy equations in the laminar and transitional flow regime between Re = 170 and 2000. The ratio of the corrugation wave length lambda* to amplitude a* has been varied between 7 and 10. The angle of the corrugation of the neighboring plates has been kept fired at 45 deg. Results show that the critical Reynolds number for self-sustained flow oscillations is about 240. For Reynolds numbers larger than 1000, the Nusselt number and the friction factor are nearly independent of the dimensionless wavelength, Computational results compare well with available experimental results.

引用

页码：314 / 321

页数：8

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