Abstract:In order to study the cross wind effect on the influence of pitch angle on the overall aerodynamic performance of propeller, CFD software was used to solve N-S equation of unsteady incompressi-ble flow and S-A turbulence model, based on sliding mesh technology and dynamic mesh technology. The aerodynamic characteristics of propeller under static change and dynamic change of pitch angles were numerically simulated, respectively. The static pitch angles were 0?, 3癮nd 6?. The dynamic change of pitch angle indicates pitch angle sinusoidally varied from 0皌o 4?. The numerical results indicates that in the static process, the tension and torque increase linearly with pitch angle, while the efficiency decreases. Compared to the case of pitch angle of 0?, the tension increases by 20%-30% and the torque increases by 30%-40% for pitch angle of 3?. In the dynamic process, the tension, torque and power increase linearly with pitch angle, while the efficiency decreases. Moreover, the aerodynamic parameters at pitch angle of 3癷n the static process approximately equals that at the same pitch angle of 3癷n the dynamic process, where pitch angle increases form 0皌o 4?
[1]罗东明, 周军, 昂海松. 微型飞行器螺旋桨的气动优化设计[J]. 南京航空航天大学学报, 2003, 35(3):322-325. LUO Dongming, ZHOU Jun, ANG Haisong. Aerodyan-mic optimization design of micro air vehicle propeller[J]. Journal of Nanjing University of Aeronautic & Astronautics, 2003, 35(3):322-325.(in Chinese)[2]李兴伟, 李聪, 高静,等. 螺旋桨滑流对飞机纵向气动特性的影响研究[J]. 实验流体力学, 2017, 31(5):46-52. LI Xingwei, LI Cong, GAO Jing, et al. Propeller slipstream effect on longitudinal aerodynamic characteristics of airplane[J]. Journal of experiments in fluid mechani-cs, 2017, 31(5):46-52.(in Chinese)[3]李征初, 王勋年, 陈洪,等. 螺旋桨滑流对飞机机翼流场影响试验研究[J]. 实验流体力学, 2000, 14(2):44-48. LI Zhengchu, WANG Xunnian, CHEN Hong, et al. Experimental research of influence of propeller slipstream on wing flow field[J]. Journal of experiments in fluid mechanics, 2000, 14(2):44-48.(in Chinese)[4]夏贞锋, 杨永. 螺旋桨滑流与机翼气动干扰的非定常数值模拟[J]. 航空学报, 2011, 32(7):1195-1201. XIA Zhenfeng, YANG Yong. Unsteady numerical simulation of interaction effects of propeller and wing[J]. Acta aeronautica et astronautica sinica, 2011, 32(7):1195-1201.(in Chinese)[5]BECK N, RADESPIEL R, LENFERS C, et al. Aerodynamic effects of propeller slipstream on a wing with circulation control[J]. Journal of aircraft, 2014, 52(5):1422-1436.[6]刘沛清, 马蓉, 段中喆,等. 平流层飞艇螺旋桨地面风洞试验[J]. 航空动力学报, 2011, 26(8):1775-1781. LIU Peiqing, MA Rong, DUAN Zhongzhe, et al. Ground wind tunnel test study of the propeller of stratospheric airships[J]. Journal of aerospace power, 2011, 26(8):1775-1781.(in Chinese)[7]高永卫, 乔志德. 螺旋桨风洞实验气动声学相似准则研究[J]. 西北工业大学学报, 2005, 23(4):430-434. GAO Yongwei, QIAO Zhide. A new aeroacoustic scaling law[J]. Journal of Northwestern Polytechnical Universi-ty, 2005, 23(4):430-434.(in Chinese)[8]欧阳绍修, 赵晓霞, 江宗辉,等. 螺旋桨径向力风洞试验方法研究[J]. 实验流体力学, 2012, 26(3):91-94. OUYANG Shaoxiu, ZHAO Xiaoxia, JIANG Zonghui, et al. The research on wind tunnel test method of pro-peller′s radial force[J]. Journal of experiments in fluid mechanics, 2012, 26(3):91-94.(in Chinese)[9]王裕夫, 刘振国, 陶国权. 某高空螺旋桨气动特性数值模拟与风洞试验[J]. 北京航空航天大学学报, 2013, 39(8):1102-1105. WANG Yufu, LIU Zhenguo, TAO Guoquan. Numerical simulation of high altitude propeller′s aerodynamic cha-racteristics and wind tunnel test[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 39(8):1102-1105.(in Chinese)[10]项松, 杨康, 佟刚,等. 两种不同弦长螺旋桨的风洞试验及分析[J]. 实验力学, 2017, 32(2):273-278. XIANG Song, YANG Kang, TONG Gang, et al. Wind-tunnel experiment and analysis for two kinds of propeller with different chord lengths[J]. Journal of experimental mechanics, 2017, 32(2):273-278.(in Chinese)