Heat transfer of rotating rectangular channel with diamond shaped pin-fin array at high rotation numbers

Shyy-Woei Chang, T. M. Liou, T. H. Lee

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

This experimental study measured the detailed Nusselt numbers (Nu) distributions over two opposite leading and trailing walls of a rotating rectangular channel fitted with diamond shaped pin-fin array with radially outward flow for gas turbine rotor blade cooling applications. The combined and isolated effects of Reynolds (Re), rotation (Ro) and buoyancy (Bu) numbers on local and area-averaged Nusselt numbers (Nu and Nu ) were examined at the test conditions of 5000<Re<15000, 0<Ro<0.6 and 0.0007<Bu<0.31. The present infrared thermography method enables the generation of full-field Nu scans over the rotating endwalls at the realistic engine Ro conditions as the first attempt to reveal the combined rotating buoyancy and Coriolis force effects on heat transfer properties. The selected heat transfer results demonstrate the Coriolis and rotating-buoyancy effects on the heat transfer performances of this rotating channel. Acting by the combined Coriolis and rotating buoyancy effects on the area-averaged heat transfer properties, the rotating leading and trailing area-averaged Nusselt numbers are modified respectively to 0.82-1.52 and 1-1.89 times of the static channel references. A set of physically consistent empirical Nu correlations was generated to permit the assessments of individual and interdependent Re, Ro and Bu effects on the area-averaged heat transfer properties over leading and trailing endwalls.

原文English
主出版物標題ASME Turbo Expo 2012
主出版物子標題Turbine Technical Conference and Exposition, GT 2012
頁面219-228
頁數10
版本PARTS A AND B
DOIs
出版狀態Published - 2012 十二月 1
事件ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012 - Copenhagen, Denmark
持續時間: 2012 六月 112012 六月 15

出版系列

名字Proceedings of the ASME Turbo Expo
號碼PARTS A AND B
4

Other

OtherASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012
國家Denmark
城市Copenhagen
期間12-06-1112-06-15

    指紋

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此

Chang, S-W., Liou, T. M., & Lee, T. H. (2012). Heat transfer of rotating rectangular channel with diamond shaped pin-fin array at high rotation numbers. 於 ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012 (PARTS A AND B 編輯, 頁 219-228). (Proceedings of the ASME Turbo Expo; 卷 4, 編號 PARTS A AND B). https://doi.org/10.1115/GT2012-68676