Study on control of multielement airfoil based on CFD
CHEN Hong-Xun-1, 2 , HUO Cong-Cong-3, LIU Wen-Mei-3
(1.Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China; 2.Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai 200072, China; 3.School of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China)
Abstract：To improve the performance of fluid machinery at offdesign conditions, a multielement airfoil with adjustable leading edge slats was designed inspired by the idea of improving liftdrag ratio of aircraft by adjusting the leading edge slats at takeoff stage. The numerical model of the inputs (deflection of the leading edge slats, overlap and gap) and output (the liftdrag ratio of aircraft) was established based on CFD numerical simulation of steady flows. Those three input variables were optimized through the genetic algorithm to get the maximum liftdrag ratios in different angles of attack. The relations between angle of attack and slats position for an optimal liftdrag ratio were established, providing a theoretical basis for active control of flow. The results show that using genetic algorithm to optimize the slat parameters can reduce timeconsuming as high as 40％. The aerodynamic performance of multielement airfoil was greatly improved through optimizing slats parameters. As a result, the liftdrag ratio at a large angle of attack was raised compared with the original airfoil. This work can provide a reference for designing fluid machinery with highefficiency under multiconditions.
陈红勋, 霍聪聪, 刘文梅. 基于CFD的分段翼型控制研究[J]. 排灌机械工程学报, 2012, 30(5): 513-516.
CHEN Hong-Xun- , HUO Cong-Cong, LIU Wen-Mei. Study on control of multielement airfoil based on CFD. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(5): 513-516.
［1］ 陈美宁,朴英,王大磊.某型航空发动机风扇串列叶栅的数值模拟［J］.航空动力学报,2010,25(5): 1117-1122.Chen Meining, Piao Ying, Wang Dalei. Numerical simulation of tandem cascades in an aeroengine fan［J］. Journal of Aerospace Power, 2010,25(5): 1117-1122. (in Chinese)［2］ 桂绍波,曹树良,谭磊,等.前置导叶预旋调节离心泵性能的数值预测与试验［J］.农业机械学报,2009,40(12):101-106.Gui Shaobo, Cao Shuliang, Tan Lei, et al. Numerical simulation and experiment of inlet guide vane prewhirl regulation for centrifugal pump ［J］.Transactions of the Chinese Society for Agricultural Machinery, 2009,40(12):101-106. (in Chinese)［3］Mois′es Solis, Farid Bakir, Sofiane Khelladi, et al. Numerical study on pressure fluctuations reduction in centrifugal pumps: Influence of radial gap and splitter blades［J］. International Scholarly Research Network Mechanical Engineering, 2011:479594.［4］ 陈红勋,刘卫伟,见文,等. 基于流动控制技术的低比转速离心泵叶轮研发［J］.排灌机械工程学报,2011,29(6):466-470.Chen Hongxun, Liu Weiwei, Jian Wen, et al. Development of low specificspeed centrifugal pump impellers based on flow control technique ［J］. Journal of Drainage and Irrigation Machinery Engineering, 2011,29(6):466-470. (in Chinese)［5］ Cao Yihua, Zhong Guo, Ma Chao. Numerical simulation of ice accretion prediction on multiple element airfoil［J］. Technological Sciences, 2011, 11(9): 2296-2304.［6］ Kerrebrock J L, Epstein A H, Merchant A A. Design and test of an aspirated counterrotating fan［J］. Journal of Turbo Machinery, 2008, 130(2): 021004.［7］ Ragheb A M, Selig M S. Multielement airfoil configurations for wind turbines［C］／／Proceedings of the 29th AIAA Applied Aerodynamics Conference. Honolulu, Hawaii: American Institute of Aeronautics and Astronautics, 2011.［8］王福军.计算流体动力学分析——CFD软件原理与应用［M］.北京：清华大学出版社，2004.［9］Patalia T P, Kulkarni G R. Behavioral analysis of genetic algorithm for function optimization［C］／／Proceedings of the IEEE International Conference on Computational Intelligence and Computing Research, 2010.［10］石吉勇,邹小波,赵杰文,等. 基于GA-ICA和高光谱图像技术的黄瓜叶叶绿素检测［J］.江苏大学学报:自然科学版,2011,32(2):134-139.Shi Jiyong, Zou Xiaobo, Zhao Jiewen, et al. Measurement of chlorophyll content in cucumber leaves based on GA-ICA and hyperspectral imaging technique［J］. Journal of Jiangsu University:Natural Science Edition, 2011, 32(2):134-139. (in Chinese)［11］郑云,高永卫.遗传算法在风洞试验优化中的应用研究［J］.试验流体力学,2007, 21(3): 58-75.Zheng Yun,Gao Yongwei. The application research of genetic algorithm in wind tunnel experiment optimization［J］. Journal of Experiments in Fluid Mechanics, 2007, 21(3): 58-75. (in Chinese)
