云南高校图书馆联盟文献共享服务平台- AEROACOUSTIC

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Aeroacoustic Investigation of Trailing-Edge Finlets: 《Advances in Aerospace Science and Technology》2022年第1期1-24,共24页Yehia Salama Joana Rocha; Wind tunnel testing and embedded large eddy simulations are employed to study the noise reduction of trailing-edge finlets on an airfoil. Trailing-edge finlets are shown to increase the distance between the highly ene...; 关键词：Wind Tunnel Testing Noise Trailing Edges Finlets Airfoil Design

Aeroacoustic prediction based on large-eddy simulation and the Ffowcs Williams-Hawkings equation被引量：2: 《Advances in Aerodynamics》2022年第1期395-412,共18页Yufei Zhang Yang Xiao Ruihuan Liu Haixin Chen; National Natural Science Foundation of China under grant Nos.11872230,91952302 and 92052203;National Science and Technology Major Project(J2019-II-0006-0026).; A hybrid noise computation method is presented in this paper.Large-eddy simulation with wall-model equation is proposed to compute the flow field.With a stress-balanced wall-model equation,the near-wall computation co...; 关键词：Aeroacoustic prediction Wall-modeled large-eddy simulation Vortex shedding Vortex interaction noise

Noise reduction in cavity flow by addition of porous media被引量：2: 《Acta Mechanica Sinica》2022年第2期68-80,I0003,共14页Ruqian Guo Xiaopeng Chen Zhenhua Wan Haibao Hu Shuai Cui; supported by the National Natural Science Foundation of China(Grant No.11872315);the Natural Science Basic Research Program of Shaanxi(Grant No.2019JM-105).; Self-sustained oscillation and the sound radiation of flow over an open cavity is of great importance in nature and industry.Influences of filled porous media in the cavity are investigated numerically by using a latt...; 关键词：Cavity flow Lattice Boltzmann method Porous media AEROACOUSTIC VORTEX

Evaluation of pressure oscillations by a laboratory motor: 《Chinese Journal of Aeronautics》2020年第3期805-825,共21页Roohollah TAHERINEZHAD Gholamreza ZAREPOUR; Aeroacoustic pressure oscillation is one of the important challenges in segmented solid rocket motors with high slenderness ratio.The reason for these oscillations can be searched in vortex shedding due to grain burni...; 关键词：AEROACOUSTIC Pressure oscillation Solid rocket motor Strouhal number Sub-scale Vortex shedding

Aeroacoustic and aerodynamic optimization of propeller blades被引量：8: 《Chinese Journal of Aeronautics》2020年第3期826-839,共14页Peixun YU Jiahui PENG Junqiang BAI Xiao HAN Xiang SONG; It is of great significance to develop a high-efficiency and low-noise propeller optimization method for new-generation propeller aircraft design.Coupled with free form deformation method,dynamic mesh interpolation te...; 关键词：AEROACOUSTIC Aerodynamic Dynamic mesh interpolation technology Free form deformation method Optimization algorithm PROPELLER Sound pressure level Surrogate model

Aerodynamic/aeroacoustic variable-fidelity optimization of helicopter rotor based on hierarchical Kriging model被引量：12: 《Chinese Journal of Aeronautics》2020年第2期476-492,共17页Yuepeng BU Wenping SONG Zhonghua HAN Yu ZHANG Liang ZHANG; sponsored by the National Natural Science Foundation of China(Nos:11772261,11972305);"111"Project of China(No.:B17037).; Rotor noise is one of the most important reasons for restricting helicopter development;hence,the optimization design of rotor blade considering aeroacoustic and aerodynamic performance at the same time has always bee...; 关键词：Aeroacoustics Design OPTIMIZATION FW-Hpds equation HELICOPTER ROTOR RANS EQUATIONS

Study on Acoustically Transparent Test Section of Aeroacoustic Wind Tunnel: 《Journal of Applied Mathematics and Physics》2018年第1期1-10,共10页Jinlei Lv Ning Wang Daxiong Liao Yongsheng Yu Xinglong Gao; On the purpose of accurate data acquisition for the aeroacoustic testing mostly in open jet test section of aeroacoustic wind tunnel, the large scale anechoic chamber is specifically designed to build the low backgrou...; 关键词：AEROACOUSTIC Experiment SOUND TRANSPARENT PROPERTY Acoustic Test SECTION Low BACKGROUND Noise SOUND Identification

Numerical Study of Aeroacoustic Sound on Performance of Bladeless Fan被引量：1: 《Chinese Journal of Mechanical Engineering》2017年第2期483-494,共12页Mohammad Jafari Atta Sojoudi Parinaz Hafezisefat; Aeroacoustic performance of fans is essential due to their widespread application. Therefore, the original aim of this paper is to evaluate the generated noise owing to different geometric parameters. In current study...; 关键词：Bladeless fan · Computational fluid dynamic （CFD） · Aeroacoustic performance · Ffowcs Williams and Hawkings （FW-H） formulation

Comparison of Passive Control Methods on Cavity Aeroacoustic Using Delayed Detached Eddy Simulation: 《Transactions of Nanjing University of Aeronautics and Astronautics》2015年第5期517-522,共6页刘瑜童明波; supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD);the Funding of Jiangsu Innovation Program for Graduate Education (KYLX_0296);the Fundamental Research Funds for the Central Universities; Delayed detached eddy simulation(DDES)is performed to investigate an open cavity at Ma0.85.Clean cavity and cavity with leading-edge saw tooth spoiler and flattop spoiler,are modeled.The results obtained from clean ca...; 关键词：AEROACOUSTIC CAVITY delayed detached eddy simulation(DDES) saw tooth spoiler flattop spoiler

Flow aeroacoustic damping using coupled mechanical electrical impedance in lined pipeline: 《Chinese Physics B》2015年第5期410-414,共5页陈勇黄奕勇陈小前白玉铸谭晓栋; supported by the National Natural Science Foundation of China(Grant Nos.11404405,91216201,51205403,and 11302253); We report a new noise-damping concept which utilizes a coupled mechanical-electrical acoustic impedance to attenuate an aeroacoustic wave propagating in a moving gas confined by a cylindrical pipeline. An electrical d...; 关键词：aeroacoustics mechanical-electrical impedance wave propagation uniform flow

AEROACOUSTIC