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ISSN 打印: 1065-5131

ISSN 在线: 1563-5074

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 2.3 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.2 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00037 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.6 SJR: 0.433 SNIP: 0.593 CiteScore™:: 4.3 H-Index: 35

Indexed in

FILM COOLING PERFORMANCE IN A LOW-SPEED 1.5-STAGE TURBINE: EFFECTS OF BLOWING RATIO AND ROTATION

卷 18, 册 5, 2011, pp. 419-432
DOI: 10.1615/JEnhHeatTransf.2011003253
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摘要

This paper presents experimental investigations on film cooling performance under rotation in a low-speed 1.5-stage turbine using the thermochromic liquid crystal (TLC) technique. The experiment was accomplished in a test facility which was recently established to study rotating film cooling performance in realistic turbine stages. Eighteen blades of chord length of0.1243 m and height of 0.099 m were installed in the rotor. A film hole with diameter of 0.004 m, angled 28° and 36° tangentially to the pressure surface and suction surface in streamwise, respectively, was set in the middle span of the rotor blade. All measurements were made at three different rotating speeds of 600, 667, and 702 rpm with the blowing ratios varying from 0.3 to 3.0. The Reynolds number based on the mainstream velocity of the turbine outlet and the chord length of the rotor blade was fixed at 1.89 × 105. Results show that on the pressure side, the film coverage and cooling effectiveness scaled up with the blowing ratio and the film deflected centrifugally; on the suction side, the maximum film coverage and cooling effectiveness were obtained at moderate blowing ratio and a centripetal deflection of the film was observed. The film deflection could be amplified by either decreasing the blowing ratio or increasing the rotation number on both sides. Overall, blowing ratio and rotation play significant roles in the film cooling performance.

对本文的引用
  1. Guoqing Li, Junqiang Zhu, Hongwu Deng, Zhi Tao, Haiwang Li, Experimental investigation of rotating film cooling performance in a low speed 1.5-stage turbine, International Journal of Heat and Mass Transfer, 61, 2013. Crossref

  2. Li Guoqing, Zhu Junqiang, Wang Kai, Li Haiwang, Zhang Qian, Film cooling performance in a low speed 1.5-stage turbine: effects of mainstream Reynolds number and turbulence, Heat and Mass Transfer, 51, 6, 2015. Crossref

  3. ZHU Xingdan, ZHANG Jingzhou, TAN Xiaoming, SHAN Yong, Effect of rotation on film cooling with a single row of shaped holes on blade pressure side, Journal of Thermal Science and Technology, 12, 2, 2017. Crossref

  4. Li Hai-wang, Han Feng, Ma Yi-wen, Wang Hai-chao, Zhou Zhi-yu, Tao Zhi, Experimental investigation on the effects of rotation and the blowing ratio on the leading-edge film cooling of a twist turbine blade, International Journal of Heat and Mass Transfer, 129, 2019. Crossref

  5. Li Hai-wang, Han Feng, Zhou Zhi-yu, Ma Yi-wen, Tao Zhi, Experimental investigations of the effects of the injection angle and blowing ratio on the leading-edge film cooling of a rotating twisted turbine blade, International Journal of Heat and Mass Transfer, 127, 2018. Crossref

  6. Li Hai-wang, Han Feng, Wang Hai-chao, Zhou Zhi-yu, Tao Zhi, Film cooling characteristics on the leading edge of a rotating turbine blade with various mainstream Reynolds numbers and coolant densities, International Journal of Heat and Mass Transfer, 127, 2018. Crossref

  7. Al-Zurfi Nabeel, Nasser Adel, LES of rotating film-cooling performance in a 1-1/2 turbine stage, Propulsion and Power Research, 8, 2, 2019. Crossref

  8. Li Haiwang, Zhao Guoqin, Zhou Zhiyu, Wang Haichao, You Ruquan, The characteristics and divergence of fan-shaped and cylindrical holes on the suction side of a turbine blade under rotating conditions, International Journal of Heat and Mass Transfer, 139, 2019. Crossref

  9. Al-Zurfi Nabeel, Turan Ali, Nasser Adel, Alhusseny Ahmed, A numerical study of anti-vortex film-cooling holes designs in a 1-1/2 turbine stage using LES, Propulsion and Power Research, 8, 4, 2019. Crossref

  10. He Xiaojian, Li Haiwang, Zhao Guoqin, You Ruquan, Comparison of turbine blade film cooling efficiency between PSP and TLC techniques in a stationary wind tunnel, AIP Advances, 11, 1, 2021. Crossref

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