Experimental study of the aerodynamic noise radiated by cylinders with different cross-sections and yaw angles
| Autor: | Malcolm Smith, E. Latorre Iglesias, David Thompson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Acoustics and Ultrasonics business.industry Angle of attack Mechanical Engineering Acoustics Radiation angle Reynolds number Aerodynamics Structural engineering Condensed Matter Physics Vortex shedding 01 natural sciences Directivity 010305 fluids & plasmas symbols.namesake Mechanics of Materials 0103 physical sciences symbols business 010301 acoustics Noise (radio) Wind tunnel |
| Popis: | Vortex shedding from cylinders has been extensively studied due to its occurrence in many engineering fields. Many experimental studies reported in the literature focus on the aerodynamics of the vortex shedding process but the literature about the radiated noise is more scarce. The aim of the work presented here is to extend the available noise data. Aero-acoustic wind tunnel tests were carried out using cylinders with different cross-sections: circular, square, rectangular and elliptical. Flow speeds between 20 and 50 m/s were used, corresponding to Reynolds numbers in the range from 1.6×104 to 1.2×105. The dependence of the noise on the yaw angle, flow speed, cross-sectional shape, angle of attack and radiation angle (directivity) is assessed. The results obtained are compared, where possible, with those found in the literature for similar cases. It is intended that the results can be used for the validation and calibration of numerical and empirical aerodynamic noise prediction models. |
| Databáze: | OpenAIRE |
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