Static aeroelastic divergence analysis by introducing correction techniques of aerodynamic data
-
摘要: 将气动力修正技术应用于静气动弹性发散计算与分析中.根据三维翼面定常气动压力分布数据,获取压力修正因子以及下洗修正因子,对基于平面偶极子格网法的定常气动力影响系数矩阵进行压力修正和下洗修正,并采用模态法对某翼面进行静气动弹性发散的计算.结果表明:由于三维翼面定常气动压力分布的气动力中心与偶极子格网法的气动力中心相比更靠近前缘,因此压力修正和下洗修正后的翼面发散速度较修正前均有所降低.Abstract: The correction techniques of aerodynamic forces were introduced in the computation and analysis of static aeroelastic divergence. According to steady pressure distribution data on a three dimensional wing, the correction factors to pressure and downwash were obtained and the steady aerodynamic influence matrix based on planar double lattice method was corrected. The divergence speed of the wing was calculated using the mode method. The results show the divergence speeds of the wing after pressure correction and downwash correction are both lower than that before, due to the aerodynamic center of steady pressure distribution on the three dimensional being closer to the leading edge than that of planar double lattice method.
-
[1] Rodden W P, Johnson E H. MSC/Nastran aeroelastic analysis user’s guide V68[M]. Los Angeles, CA: MSC Software Corporation, 1994 [2] Giesing J P,Kalman T P,Rodden W P. Correction factor techniques for improveing aerodynamic prediction methods . NASA CR-144967,1976 [3] Pitt D M, Goodman C E. Flutter calculations using doublet lattice aerodynamics modified by the full potential equation . AIAA-87-0882,1987 [4] Wieseman Carol D. Methodology for matching experimental and computational aerodynamic data . NASA-TM-100592,1988 [5] Cai J, Liu F, Tsai H M, et al. Static aero-elastic computation with a coupled CFD and CSD method .AIAA-2001-717,2001 [6] Smith M J, Patil M J, Hodges D H. CFD-Based analysis of nonlinear aeroelastic behavior of high-aspect ratio wings . AIAA-2001-1582,2001 [7] 徐敏,安效民,陈士橹. 一种CFD/CSD耦合计算方法[J]. 航空学报,2006,27(1):33-37 Xu Min, An Xiaomin, Chen Shilu. CFD/CSD coupling numerical computational methodology[J]. ACTA Aeronautica et Astronautica Sinica,2006,27(1):33-37(in Chinese) [8] Thomas J P, Dowell E H, Kenneth C H. Nonlinear inviscid aerodynamic effects on transonic divergence, flutter and limit cycle oscillations . AIAA-2001-1209,2001 [9] 万志强,唐长红,杨超. 三种静气动弹性发散方法的一致性分析和验证[J]. 航空学报,2002, 23(4): 342-345 Wan Zhiqiang,Tang Changhong,Yang Chao. Consistence analysis and validation of three methods for static aeroelastic divergence[J]. ACTA Aeronautica et Astronautica Sinica,2002,23(4):342-345(in Chinese) [10] Harder R L, Desmarais R N. Interpolation using surface spline[J]. J Aircraft,1972,9(2):189-191 [11] 陈桂彬,邹丛青,杨超. 气动弹性设计基础[M]. 北京: 北京航空航天大学出版社,2004:13-17 Chen Guibin, Zou Congqing, Yang Chao. The basis of aeroelastic design[M]. Beijing: Beijing University of Aeronautics and Astronautics Press,2004:13-17(in Chinese)
点击查看大图
计量
- 文章访问数: 3678
- HTML全文浏览量: 130
- PDF下载量: 1196
- 被引次数: 0