Thermal performance of a radially rotating twin-pass smooth-walled parallelogram channel

Tong Miin Liou, Shyy Woei Chang, Chun Chang Yang, Yi An Lan

研究成果: Conference contribution

2 引文 (Scopus)

摘要

An experimental study was performed to measure the detailed heat transfer distributions, Fanning friction factors (f) and thermal performance factors (TPF) of a radially rotating twin-pass parallelogram channel. Laboratory scale full field Nusselt number (Nu) distributions over Leading Endwall (Leading-E) and Trailing Endwall (Trailing-E) of the rotating channel are measured at the test conditions of 5000 < Re < 20000, 0 < Ro < 0.3 and 0.028 < δρ/ρ < 0.12. A selection of Nu data illustrates the individual and interactive impacts of Re, Ro and buoyancy (Bu) numbers on local and area-averaged heat transfer properties. Without the additional flow complexities induced by the turbulators, the degrees of Bu impacts are significantly amplified from those developed in an enhanced rotating ribbed channel. Relative to the similar rotating square twin-pass channel, the heat transfer recovery over the stable wall proceeds at the lower Ro for present rotating parallelogram channel. Accompanying with the improved heat transfer performances from the square-channel counterparts, the f values are raised. With a set of f correlations generated using the f data collected from the Leading Sidewall (Leading-S) and Trailing Sidewall (Trailing-S) at isothermal conditions; the TPF values at various rotating conditions were evaluated. The heat transfer correlations that determine the area-averaged Nusselt numbers over the inlet and outlet legs and over the turning region are generated. The area-averaged Nu, f factors and TPF determined from the present rotating parallelogram channel are compared with those reported for the rotating twin-pass channels to determine the comparatively thermal performances of the parallelogram rotating channel for turbine rotor blade cooling.

原文English
主出版物標題Heat Transfer
發行者American Society of Mechanical Engineers (ASME)
ISBN(電子)9780791845714
DOIs
出版狀態Published - 2014 一月 1
事件ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014 - Dusseldorf, Germany
持續時間: 2014 六月 162014 六月 20

出版系列

名字Proceedings of the ASME Turbo Expo
5A

Other

OtherASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014
國家Germany
城市Dusseldorf
期間14-06-1614-06-20

指紋

Heat transfer
Nusselt number
Buoyancy
Turbomachine blades
Turbines
Rotors
Hot Temperature
Friction
Cooling
Recovery

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此文

Liou, T. M., Chang, S. W., Yang, C. C., & Lan, Y. A. (2014). Thermal performance of a radially rotating twin-pass smooth-walled parallelogram channel. 於 Heat Transfer (Proceedings of the ASME Turbo Expo; 卷 5A). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/GT2014-25322
Liou, Tong Miin ; Chang, Shyy Woei ; Yang, Chun Chang ; Lan, Yi An. / Thermal performance of a radially rotating twin-pass smooth-walled parallelogram channel. Heat Transfer. American Society of Mechanical Engineers (ASME), 2014. (Proceedings of the ASME Turbo Expo).
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Liou, TM, Chang, SW, Yang, CC & Lan, YA 2014, Thermal performance of a radially rotating twin-pass smooth-walled parallelogram channel. 於 Heat Transfer. Proceedings of the ASME Turbo Expo, 卷 5A, American Society of Mechanical Engineers (ASME), ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014, Dusseldorf, Germany, 14-06-16. https://doi.org/10.1115/GT2014-25322

Thermal performance of a radially rotating twin-pass smooth-walled parallelogram channel. / Liou, Tong Miin; Chang, Shyy Woei; Yang, Chun Chang; Lan, Yi An.

Heat Transfer. American Society of Mechanical Engineers (ASME), 2014. (Proceedings of the ASME Turbo Expo; 卷 5A).

研究成果: Conference contribution

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Liou TM, Chang SW, Yang CC, Lan YA. Thermal performance of a radially rotating twin-pass smooth-walled parallelogram channel. 於 Heat Transfer. American Society of Mechanical Engineers (ASME). 2014. (Proceedings of the ASME Turbo Expo). https://doi.org/10.1115/GT2014-25322