|
|
论文:2012,Vol:30,Issue(1):73-79 |
|
|
引用本文: |
|
|
郭旺柳, 宋文萍, 许建华, 许瑞飞. 旋翼桨尖气动/降噪综合优化设计研究[J]. 西北工业大学 |
|
|
Guo Wangliu, Song Wenping, Xu Jianhua, Xu Ruifei. An Effective Aerodynamics/Acoustic Optimization of Blade Tip Planform for Helicopter Rotors[J]. Northwestern polytechnical university |
|
|
|
|
|
|
|
旋翼桨尖气动/降噪综合优化设计研究 |
|
郭旺柳, 宋文萍, 许建华, 许瑞飞 |
|
西北工业大学 翼型/叶栅空气动力学国家重点实验室,陕西 西安 710072 |
摘要: |
采用Kriging模型和遗传算法开展了针对桨尖形状的气动/声学综合优化设计研究。为了获得精确的气动及声压特性,得到基于声类比混合方法计算气动噪声需要的声源数据,采用非定常雷诺平均NS方程(URANS)数值模拟旋翼前飞粘性绕流。为了提高遗传算法的优化效率,采用一种基于EI方法的Kriging模型代替费时的数值模拟过程。以AH-1G/OLS旋翼为基准,并以气动性能为约束,噪声峰值最小为目标,进行了旋翼桨尖的降噪优化设计。优化结果表明,文中多发展的优化方法是可行的。 |
关键词:
旋翼
噪声
优化设计
雷诺平均 NS 方程
Kriging 模型
|
|
An Effective Aerodynamics/Acoustic Optimization of Blade Tip Planform for Helicopter Rotors |
|
Guo Wangliu, Song Wenping, Xu Jianhua, Xu Ruifei |
|
National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University,Xi'an 710072,China |
Abstract: |
Sections 1, 2 and 3 of the full paper explain the optimization mentioned in the title,which we believe ismore effective than previous ones.Their core consists of: "The aerodynamic/acoustic optimization of rotor blade tipshape is studied with the genetic algorithm based on the Kriging model.To obtain accurately aerodynamic perform-ance and acoustic pressure,the flow around helicopter rotor in forward flight is simulated by solving URANS (Un-steady Reynolds-Averaged Navier-Stokes) equations on a chimera grid system,then the solution on the intermeadialgrid is used to solve FW-Hpds (Ffowcs Williams-Hawkings equation with Penetrable Data Surface) equation.Krig-ing model,which is built by using LHS (Latin Hypercube Sampling) to produce sample points,is used to improvecomputational efficiency,thus making it possible to accomplish the optimization process successfully".Optimizationbased on AH-1/OLS rotor in forward flight is accomplished with the aerodynamic performance as a constraint andwith the minimization of the absolute sound pressure peak value taken as an objective function.The optimized simu-lation results, presented in Figs.7 through 14 and Tables 1 through 4, and their analysis show preliminarily that ouroptimization method is indeed effective. |
Key words:
aerodynamics
algorithm
analysis
calculations
compressible flow
computational fluid dynamics
design
efficiency
errors
helicopter rotors
improvement
models
Navier-Stokes equations
numeri-cal methods
optimization
pressure distribution
Reynolds number
sampling
shock waves
simula-tion
unsteady flow
Kriging model
|
|
收稿日期: 2011-04-06
修回日期:
|
DOI: |
基金项目: 西北工业大学翼型叶栅空气动力学国家重点实验室基金(9140C4201020802)资助 |
通讯作者:
Email: |
作者简介: 郭旺柳(1985-),西北工业大学硕士研究生,主要从事旋翼气动噪声的计算及优化设计的研究。
|
|
|
|
|
|
|
|
参考文献: |
|
|
[1] 招启军, 徐国华. 新型桨尖旋翼悬停气动性能试验及数值研究. 航空学报, 2009, 30(3):423~429Zhao Qijun,Xu Guohua. Aerodynamic Performance of Rotor with New Type Blade-Tip in Hover Based upon Test and NumericalInvestigations. Acta Aeronautica et Astronautica Sinica, 2009, 30(3):423~429 (in Chinese) [2] 陈平剑,徐玉貌. 旋翼桨叶气动外形设计. 直升机技术, 2007, 3:16~19Chen Pingjian,Xu Yumao. The Design of Rotor Aerodynamics Shape. Helicopter Technique. 2007, 3: 16~19 (in Chinese) [3] 杨文青, 宋笔锋, 宋文萍. 高效确定重叠网格对应关系的距离减缩法及其应用. 航空学报, 2009, 30(2):205~212Yang Wenqing,Song Bifeng,Song Wenping. Distance Decreasing Method for Confirming Corresponding Cells of Overset Gridsand Its Application. Acta Aeronautica et Astronautica Sinica, 2009, 30(2):205~212 (in Chinese) [4] Ffowcs Williams J E,Hawkings D L. Sound Generated by Turbulence and Surfaces in Arbitrary Motion. Philosophical Transac-tions of the Royal Society. 1969,A264(1151): 321~342 [5] Xu Jianhua,Song Wenping,Xu Ruifei,et al. Optimization of Blade Tip Planform for a Quiet Helicopter Rotor. The 2010 Asia-Pacific International Symposium on Aerospace Technology,Xi'an, 2010, 275~278 [6] 许瑞飞, 宋文萍, 韩忠华. 改进 Kriging 模型在翼型气动优化设计中的应用研究. 西北工业大学学报, 2010,28(4):503~509Xu Ruifei, Song Wenping, Han Zhonghua. Application of Improved Kriging-Model-Based Optimization Method in Airfoil Aerody-namic Design. Journal of Northwestern Polytechnical University, 2010, 28(4):503~509 (in Chinese) [7] Kuntz M. Rotor Noise Prediction in Hover and Forward Flight Using Different Aeroacoustic Methods. AIAA-1996-169 |
|
|
|
|
|
|
|