考虑气动弹性的机翼噪声研究

详细信息    查看官网全文

• 英文论文题名：Study on the airfoil aerodynamic noise considering the effect of aeroelasticity
• 论文作者：蒋树杰 ; 刘江涛 ; 陈刚
• 英文论文作者：JIANG Shujie ; LIU Jiangtao ; CHEN Gang ; China Aerodynamics Research and Development Center ; State Key Laboratory for Strength and Vibration of Mechanical Structures ; School of Aerospace ; Xi'an Jiaotong University
• 年：2016
• 作者机构：中国空气动力研究与发展中心;西安交通大学机械结构强度与振动国家重点实验室;
• 论文关键词：机翼噪声 ; 气动弹性 ; CFD/CSD方法 ; 声类比理论
• 英文论文关键词：airfoil noise ; aeroelasticity ; CFD/CSD ; acoustic analogy method
• 会议召开时间：2016-11-04
• 会议录名称：2016年度全国气动声学学术会议论文摘要集
• 语种：中文
• 分类号：V211.47
• 学会代码：LTLX
• 会议名称：2016年度全国气动声学学术会议
• 会议地点：中国北京
• 主办单位：中国航空学会航空声学专业委员会、中国航空学会气动声学专业委员会、中国商飞上海飞机设计研究院、北京航空航天大学
• 学会名称：北京航空航天大学流体力学教育部重点实验室
• 页数：8
• 文件大小：670k
• 原文格式：D
• 会议级别：全国

摘要

对于飞行器来说,气动弹性是一个典型的流固耦合问题。气动弹性力学研究的是气动力、弹性力和惯性力的相互作用。在飞机实际飞行过程中,由于会受到气动力的作用,在特定情况下机翼结构会产生振动。这种振动会进一步增大噪声,忽略这种噪声会使数值模拟结果偏小。本文以NACA0012翼型为研究对象,采用CFD/CSD方法求解了翼型在流场作用下的结构场响应,再通过声类比理论求解了远场噪声。研究发现,在考虑机翼气动弹性的情况下,机翼气动噪声要大于不考虑气动弹性的情况,并且噪声声源的指向性也会发生改变。
In early study, the airfoil is treated as rigid body which means the flow have no influence on the airfoil.The noise generation by the airfoil is much smaller than the situation considering the effect of aeroelasticity.The present paper reports an attempt in developing a numerical method which is able to calculate the no-linear fluid-structure interaction experienced by NACA0012 airfoil and its aeroacoustic response correctly.The mechanism and laws of NACA0012 airfoil noise has been discussed.It is observed that the effect of aeroelasticity has significant influence on the far field aerodynamic sound.A higher sound pressure is observed for the case considering the effect of aeroelasticity.

引文

[1]宋文萍,余雷,韩忠华.飞机机体气动噪声计算方法综述[J].航空工程进展,2010,1(2):125-131.Song Wenping,Yu Lei,Han Zhong hua.Status of Investigation on Airframe Noise Computation[J].Advances in Aeronautical Science and Engineering,2010,1(2):125-131.(in Chinese).
    [2]毛义军,祁大同.叶轮机械气动噪声的研究进展[J].力学进展,2009,39(2):189-202.MAO Yijun,QI Datong.Review of aerodynamic noise in turbomachine[J].Advances in Mechanics,2009,39(2):189-202.(in Chinese)
    [3]许常悦.圆柱可压缩绕流及其流动控制的大涡模拟研究[D].合肥:中国科学技术大学,2009.Changyue Xu.Large eddy simulation of the compressible flow past a cireular cylinder and its flow control[D].Hefei:University of science and technology of China,2009.(in Chinese).
    [4]Rizzetta DP,Visbal MR,Blaisdell GA.A time-implicit high-order compact differencing and filtering scheme for large-eddy simulation[J].International Journal for Numerical Methods in Fluids,2003,42(6):665-693.
    [5]Smagorinsky J.General circulation experiments with the primitive equations:I.The basic experiment[J].Monthly weather review,1963,91(3):99-164.
    [6]Williams JEF,Hawkings DL.Sound generation by turbulence and surfaces in arbitrary motion[J].Philosophical Transactions of the Royal Society A Mathematical Physical&Engineering Sciences,1969,264(1151):321-342.
    [7]Brooks TF,Pope DS,Marcolini MA.Airfoil self-noise and prediction[R].NASA Reference Publication,1989,1218.