ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Effect of Rotor/rotor Interactions on Blades Unsteady Loading
Received date: 2013-10-25
Revised date: 2014-01-02
Online published: 2014-01-17
Supported by
National Natural Science Foundation of China (51076132)
A time-accurate simulation is performed to investigate the unsteady flow field of two counter-rotating rotors under design conditions in the present paper with emphasis on the unsteady effect of the rotor/rotor interactions on rotor blades. The results indicate that with a counter-rotating pattern, the strong unsteadiness of the upstream rotor on its pressure surface is caused by the potential repercussion of the downstream rotor, and the upstream wakes and potential interference are the main causes for the strong unsteadiness of the downstream rotor, especially for its blade leading region. Furthermore, the interaction between the two rotors is testified by the frequency analyzing method. The counter-rotating pattern leads to the doubling of pressure fluctuation frequency on the blade surfaces. Meanwhile, by analyzing the aerodynamic force on the blade surfaces, the effect of potential repercussion on the upstream rotor is found stronger than the influence of the upstream wake and potential interference on the downstream rotor; the relative positions between the two rotors also have some influence on the aerodynamic force of each rotor.
GAO Limin , MIAO Fang , LI Ruiyu , LIU Bo . Effect of Rotor/rotor Interactions on Blades Unsteady Loading[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(7) : 1874 -1881 . DOI: 10.7527/S1000-6893.2013.0509
[1] Schimming P. Counter rotating fans-an aircraft propulsion for the future?[J]. Journal of Thermal Science, 2003, 12(2): 97-103.
[2] Sharma P B, Adekoya A. A review of recent research on counter rotating axial flow compressor stage//Proceedings of the International Gas Turbine and Aeroengine Congress and Exhibition, 1996: 10-13.
[3] Kerrebrock J L, Epstein A H, Merchant A A, et al. Design and test of an aspirated counter rotating fan[J]. Journal of Turbomachinery, 2008, 130(4): 1-8.
[4] Mao M M, Song Y P, Wang Z Q. Numerical research on influence of rotor-stator interactions in transonic compressor[J]. Journal of Aerospace Power, 2007, 22(9): 1468-1474. (in Chinese) 毛明明, 宋彦萍, 王仲奇. 跨声压气机动静干涉效应的数值研究[J]. 航空动力学报, 2007, 22(9): 1468-1474.
[5] Wang Y F, Hu J, Li C P, et al. Effect of up-stream rotor on the aerodynamic force on down-stream stator blades[J]. Acta Aeronautica et Astronautica Sinica, 2006, 27(4): 545-550. (in Chinese) 王英锋, 胡骏, 李传鹏, 等. 上游转子对下游静子叶片气动力的影响[J]. 航空学报, 2006, 27(4): 545-550.
[6] Zhou L, Xi G, Cai Y H. Numerical investigation of unsteady IGV-impeller-diffuser interaction in a centrifugal compressor[J]. Chinese Journal of Applied Mechanics, 2008, 25(2): 202-206. (in Chinese) 周莉, 席光, 蔡元虎. 进口导叶/叶轮/扩压器非定常相干的数值与实验研究[J]. 应用力学学报, 2008, 25(2): 202-206.
[7] Qi X M, Feng Z P, Kang S, et al. Influence of rotor/stator interation on the performance of axial-flow turbine stages[J]. Journal of Engineering Thermophysics, 2003, 24(1): 39-42. (in Chinese) 祁旭明, 丰镇平, Kang Shun, 等. 动静干涉效应对轴流透平级气动性能的影响[J]. 工程热物理学报, 2003, 24(1): 39-42.
[8] Chen Y Y, Flow field and performance investigation and three-dimension optimization study of contra-rotating compressor. Xi'an: Northwestern Polytechnical University, 2008. (in Chinese) 陈云永. 对转压气机特性、流场分析及三维优化研究. 西安: 西北工业大学, 2008.
[9] Guidotti E, Turner M G. Analysis of unsteady flow in an aspirated counter-rotating compressor using the nonlinear harmonic method, ASME-GT-2009-60285. Florida: ASME, 2009.
[10] Knapke R D, Turner M G, List M G, et al. Time accurate simulations of a counter-rotating aspirated compressor, ASME-GT-2008-50877. Berlin: ASME, 2008.
[11] Merchant A A, Kerrebrock J L, Epstein A H. Compressors with aspirated flow control and counter rotation, AIAA-2004-2514. Reston: AIAA, 2004.
[12] Wang L, Liu B, Xiang X R, et al. Investigation of the unsteady flow in a counter-rotating compressor using the nonlinear harmonic method[J]. International Journal of Energy Science, 2012, 2(5): 182-188.
[13] Wang L, Liu B, Yang X D, et al. Further validation of the nonlinear harmonic method in a subsonic counter-rotating compressor,ASME-GT-2012-68227. Copenhagen: ASME, 2012.
[14] Meyer R, Knobloch K, Linden J. Hot-wire measurements in a high speed counter rotating turbo fan rig, ASME-GT-2010-22569. Glasgow: ASME, 2010.
[15] Gao L M, Li X J, Feng X D, et al. Investigation of influence of rotational speed ratio on stability boundary of counter-rotating compressor[J]. Journal of Propulsion Technology, 2012, 33(6): 881-887. (in Chinese) 高丽敏, 李晓军, 冯旭栋, 等. 对转压气机转速比变化对稳定边界影响的研究[J]. 推进技术, 2012, 33(6): 881-887.
[16] Gao L M, Xi G, Zhou L, et al. Experimental and computational investigation of flows in a vaned diffuser under stage experiment[J]. Acta Mechanica Sinica, 2005, 37(1): 110-119.(in Chinese) 高丽敏, 席光, 周莉, 等. 级环境下叶片扩压器流场的实验与数值研究[J]. 力学学报, 2005, 37(1): 110-119.
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