Library Subscription: Guest
Home Archives Officers Future meetings Assembly for International Heat Transfer Conferences
International Heat Transfer Conference 11

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

Experimental Study of Enhanced Heat Transfer in Ducts With Periodic Rectangular Fins Along the Main Flow Direction

Z.X. Yuan
School of Energy & Power Engineering Xi'an Jiaotong University Xi'an, Shaanxi, 710049 CHINA

Wuqiang Wang
School of Energy & Power Engineering, Xi'an Jiaotong University, 710049, Xi'an, China

Wen-Quan Tao
Key Laboratory of Thermo-Fluid Engineering and Science of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China

Abstract

For the cooling of the trailing edge of turbine blade a periodically finned enhancement structure of rectangular plates is proposed to substitute the conventional pin fin structure. The experimental results of this new type of structure show that at the same Reynolds number, the Nusselt number of this kind of duct is about 1.25~2 times of the pin fin's in the range of Re = 5 × 103 ~ 5 ~ 104, and the friction factor of the former is appreciably lower than that of the latter. The Nusselt number ratio of the new type structure to that of a smooth duct, Nu/Nu0, varies, from 3.7 to 8.7 at the same Reynolds number, while at the identical pumping power this ratio is about 2.4 ~ 4.7,

Download article Publication Ethics and Malpractice Recommend to my Librarian Bookmark this Page