The Update of an Aerodynamic Wind-Tunnel for Aeroacoustics Testing

被引:6
|
作者
Santana, Leandro Dantas [1 ]
Carmo, Micael [2 ]
Catalano, Fernando Martini [1 ]
Medeiros, Marcello A. F. [1 ]
机构
[1] Escola Engenharia Sao Carlos, Ave Trabalhador Sao Carlense,400 Ctr, BR-13566590 Sao Carlos, SP, Brazil
[2] Empresa Brasileira Aeronaut, Sao Jose Dos Campos, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
Aeroacoustic testing; Wind-tunnel noise; Wind-tunnel acoustic treatment;
D O I
10.5028/jatm.v6i2.308
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
This paper describes the update and characterization of a previously pure aerodynamics wind-tunnel into a facility able to simultaneously execute aerodynamics and aeroacoustics testing. It is demonstrated that the application of high-performance acoustic materials on strategic positions of the wind-tunnel circuit and punctual actions can substantially reduce the background-noise level. This paper shows efficient measures which resulted to broadband-noise reduction of up to 5 dB and practically complete removal of spectral tones. In addition, it is demonstrated that the applied acoustic treatment reduced the turbulence level, measured at the test-section at maximum operational velocity, from the previous 0.25% level to 0.21%. As a minor penalty, the acoustic treatment reduced the flow velocity in 2% for the same electric-power input. Finally, the work described in this paper resulted on a wind-tunnel with good flow quality and capacity for aeroacoustics testing.
引用
收藏
页码:111 / 118
页数:8
相关论文
共 50 条
  • [1] WIND-TUNNEL TESTING OF STRUCTURES
    CERMAK, JE
    [J]. JOURNAL OF THE ENGINEERING MECHANICS DIVISION-ASCE, 1977, 103 (06): : 1125 - 1140
  • [2] More photogrammetry for wind-tunnel testing
    Ruyten, W
    [J]. AIAA JOURNAL, 2002, 40 (07) : 1277 - 1283
  • [3] JS']JSF wind-tunnel testing
    不详
    [J]. AEROSPACE ENGINEERING, 2003, 23 (03) : 27 - 27
  • [4] WIND-TUNNEL TESTING PROBLEMS IN SUPERAERODYNAMICS
    TSIEN, HS
    [J]. JOURNAL OF THE AERONAUTICAL SCIENCES, 1948, 15 (10): : 573 - 580
  • [5] Environmental wind-tunnel testing throughput
    Lynch, M
    Frederick, A
    [J]. INNOVATION IN TECHNOLOGY MANAGEMENT - THE KEY TO GLOBAL LEADERSHIP: THE KEY TO GLOBAL LEADERSHIP, 1997, : 483 - 483
  • [6] AERODYNAMIC CHARACTERIZATION OF MODEL TREE CANOPIES IN A WIND-TUNNEL
    KINNERSLEY, RP
    FARRINGTONSMITH, JG
    SHAW, G
    MINSKI, MJ
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 1994, 157 (1-3) : 29 - 33
  • [7] WIND-TUNNEL STUDY OF AERODYNAMIC CHARACTERISTICS OF BASE COMBUSTION
    DING, ZS
    CHEN, SS
    LIU, YF
    LUO, R
    LI, JY
    [J]. JOURNAL OF PROPULSION AND POWER, 1992, 8 (03) : 630 - 634
  • [8] WIND-TUNNEL STUDIES FOR THE AERODYNAMIC SHAPE FOR SYDNEY AUSTRALIA
    COCHRAN, LS
    HOWELL, JF
    [J]. JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 1990, 36 (1-3) : 801 - 810
  • [9] Field and wind-tunnel studies of aerodynamic roughness length
    Xian X.
    Tao W.
    Qingwei S.
    Weimin Z.
    [J]. Boundary-Layer Meteorology, 2002, 104 (1) : 151 - 163
  • [10] Photogrammetry applied to wind-tunnel testing
    Liu, TS
    Cattafesta, LN
    Radeztsky, RH
    Burner, AW
    [J]. AIAA JOURNAL, 2000, 38 (06) : 964 - 971