基于Mohring声类比的开式转子发动机噪声分析

金海波; 陈宣亮; 覃湘桂

doi:10.13224/j.cnki.jasp.2018.04.003

基于Mohring声类比的开式转子发动机噪声分析

doi: 10.13224/j.cnki.jasp.2018.04.003

1.
南京航空航天大学飞行器先进设计技术国家级重点学科实验室，南京 210016
2.
南京航空航天大学飞行器先进设计技术国家级重点学科实验室，南京 210016) 中国航空工业集团有限公司成都飞机工业(集团)有限责任公司技术中心，成都 610091

基金项目: 中央高校基本科研业务费用专项资金(NS2015005)；江苏省高校优势学科建设工程资助项目

计量
- 文章访问数: 878
- HTML浏览量: 6
- PDF量: 945
- 被引次数: 0
出版历程
- 收稿日期: 2016-10-17
- 刊出日期: 2018-04-28

Open-rotor engine noise analysis based on Mohring acoustic analogy

摘要

摘要: 为了系统地研究非均匀流场中开式转子的噪声特性，运用计算流体动力学(CFD)和计算气动声学(CAA)无限元法相结合的方法，对开式转子的频域噪声做了数值预测。通过采用基于可压缩修正的Spalart-Allmaras湍流模型对非均匀流场中开式转子气动特性进行分析，运用声学无限元方法，引入平均流场并将其插值到声学网格作为背景流场，对转子噪声和噪声传播进行数值模拟，并对特征点做频域分析。由噪声分布云图和远场特征点频谱曲线分析得出：非均匀流场中开式转子发动机的峰值辐射噪声主要集中于低频范围，噪声最大值为142dB，峰值噪声频率为115Hz,随着频率增加，交替出现多个局部峰值声压，噪声衰减速度减小。为下一代开式转子发动机噪声预测提供一种方法。
- 开式转子 /
- 噪声 /
- Mohring方法 /
- 声类比 /
- 无限元法
Abstract: In order to systematically study the characteristic of open-rotor noise in non-uniform flow field, CFD (computational fluid dynamics)/CAA (computing aerodynamic acoustic-s) hybrid method of the open-rotor aerodynamic noise was set up. The aerodynamic characteristics of open-rotor were analyzed through compressible modified Spalart-Allmaras turbulence model method, then, the open-rotor noise and noise transmission were numerically simulated by acoustic infinite element method. At the same time, the average flow field and its smooth interpolation were introduced to acoustic grid as a background flow field. Taking into account the noise distribution chart and the far field feature point spectrum curve, it was concluded that non-uniform flow field radiated noise in the open-rotor engine was mainly focused on low frequency range, the maximum noise was 142dB, and the maximum noise frequency was 115Hz. With the increase of frequency, multiple local peak sound pressures appeared alternately, and noise attenuation rate decreased. A method was proposed to predict the noise for the next generation open-rotor engine.
- open-rotor /
- noise /
- Mohring method /
- acoustic analogy /
- infinite element method

HTML

参考文献(18)

[1]	HAGER R D,VRABEL D.Advanced turboprop project［R］.NASA SP-495,1988.
[2]	HARRIS R W,CUTHBERTSON R D.UDF/727 flight test program［R］.AIAA 87-1733,1987.
[3]	WHITLOW J B,SIEVERS G K.NASA advanced turboprop research and concept validation program［R］.NASA-TM-100891,1988.
[4]	KINGGAN M J,EKOULE C M,PARRY A B.Analysis of advanced open rotor noise measurements［R］.AIAA-2014-2745,2014.
[5]	REDONNET S.Simulation de la propagation acoustique en présence découlements quelconques et de structures solides par résolution numérique des équations dEuler［J］.Acta Clinica Belgica,2001,41(1):34-36.（in France）
[6]	REDONNET S,CUNHA G.Variations on the same BANC category 8 theme:towards the development of a high fidelity acoustic hybrid method using computational aero acoustics［R］.AIAA-2014-3051,2014.
[7]	KIRCHHOFF G.Zur theorie der lichtstrahlen［J］.Annalen Der Physik,2006,254(4):663-695.（in German）
[8]	WILLIAMS J E F,HAWKINGS D L.Sound generation by turbulence and surfaces in arbitrary motion［J］Philosophical Transacitions of the Royal Society,1969,264:321-342.
[9]	BOISARD R,DELATTRE G,FALISSARD F.Computational fluid dynamics as a support to counter-rotating open-rotor wind-tunnel test analysis［J］.Journal of Aircraft,2015,51(2):614-628.
[10]	周人治,郝玉扬,祁宏斌.开式转子发动机对转桨扇设计［J］.燃气涡轮试验与研究,2014,27(1):1-5.ZHOU Renzhi,HAO Yuyang,QI Hongbin.Open rotor contra-rotating prop-fan design［J］.Gas Turbine Experiment and Research,2014,27(1):1-5.(in Chinese)
[11]	祁宏斌,周人治,黄红超,等.开式转子发动机对转桨扇性能建模研究［J］.燃气涡轮试验与研究,2012,25(1):20-24.QI Hongbin,ZHOU Renzhi,HUANG Hongchao,et al.Modeling of counter-rotating prop-fan performance of open rotor engine［J］.Gas Turbine Experiment and Research,2012,25(1):20-24.(in Chinese)
[12]	GT C.The effect of mean velocity variations on jet noise［J］.Journal of Fluid Mechanics,1966,26(1):183-197.
[13]	LOZOVSKIY A.Numerical analysis of the aerodynamic noise prediction in DNS and LES［M］.Riga,Latvia：Lap Lambert Academic Publishing ,2011.
[14]	ENVIA E.Contra-rotating open rotor tone noise prediction［R］.AIAA-2014-2606,2014.
[15]	WOJNO J P,JANARDAN B A.Comparison of NASA 9×15 low speed wind tunnel counter rotating open rotor data with GE-anechoic facility historic data for baseline F31A31 blade design［R］.AIAA-2013-2204,2013.
[16]	ZHANG S,MEGANATHAN A.Preconditioning methods in CFD-FASTRAN［R］.AIAA-2008-0701,2008.
[17]	BUSCH E R,KELER M,KRMER E.Numerical investigation of counter-rotating open rotor noise emission in different flight conditions［R］.ASME Paper GT2012-68625,2012.
[18]	ZAWODNY N S,NARK D M,BOYD D.Assessment of geometry and in-flow effects on contra-rotating open rotor broadband noise predictions［R］.AIAA-2015-0741,2015.