Heat transfer in radially rotating pin - Fin channel at high rotation numbers

Shyy-Woei Chang, T. L. Yang, G. F. Hong, Tong Miin Liou

研究成果: Conference contribution

8 引文 斯高帕斯(Scopus)

摘要

Endwall heat transfer measurements for a radially rotating rectangular pin-fin channel with the width-to-height ratio (aspect ratio) of 8 are performed at the parametric conditions of 5000≤Re≤20000, 0≤Ro≤l.4 and 0.l≤Δρ/ρ≤0.21. Centerline heat transfer levels along the leading and trailing endwalls of the rotating pin-fin channel are respectively raised to 1.77-3.72 and 3.06-5.2 times of the Dittus-Boelter values. No previous attempt has examined the heat transfer performances for the pin-fin channel at such high rotation numbers. A selection of experimental data illustrates the individual and interactive Re, Ro and buoyancy number (Bu) effects on heat transfer. Spanwise heat transfer variations between two adjoining pin rows are detected with the averaged Nusselt numbers (Nu) determined. A set of empirical equations that calculates Nu values over leading and trailing endwalls in the developed flow region is derived to correlate all the heat transfer data generated by this study and permits the evaluation of interactive and individual effects of Re, Ro and Bu on Nu. With the aid of the Nu correlations derived, the operating conditions with the worst heat transfer scenarios for this rotating pin-fin channel are identified.

原文English
主出版物標題2008 Proceedings of the ASME Turbo Expo
主出版物子標題Power for Land, Sea, and Air
頁面509-519
頁數11
版本PART A
DOIs
出版狀態Published - 2008 十二月 1
事件2008 ASME Turbo Expo - 2008 ASME Turbo Expo, Germany
持續時間: 2008 六月 92008 六月 13

出版系列

名字Proceedings of the ASME Turbo Expo
號碼PART A
4

Other

Other2008 ASME Turbo Expo
國家Germany
城市2008 ASME Turbo Expo
期間08-06-0908-06-13

All Science Journal Classification (ASJC) codes

  • Engineering(all)

指紋 深入研究「Heat transfer in radially rotating pin - Fin channel at high rotation numbers」主題。共同形成了獨特的指紋。

引用此