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国际流体力学研究期刊
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 打印: 2152-5102
ISSN 在线: 2152-5110

国际流体力学研究期刊

DOI: 10.1615/InterJFluidMechRes.v39.i2.70
pages 170-177

Aero-Acoustical Analysis of the Wake Flow of a Cylinder

Christian Maier
Glasgow Caledonian University, School of Engineering and Computing Glasgow, United Kingdom
Martin Macdonald
Glasgow Caledonian University, School of Engineering and Computing Glasgow, United Kingdom
Winfried Waidmann
University of Applied Sciences Aalen, Department of Mechanical Engineering, Aalen, Germany
David K. Harrison
Glasgow Caledonian University, School of Engineering and Computing Glasgow, United Kingdom
Wolfram Pannert
University of Applied Sciences Aalen, Department of Mechanical Engineering, Aalen, Germany

ABSTRACT

A flowed cylinder creates a tonal noise through the turbulences created in the backlash of the cylinder. The main frequency of this noise can be predicted by analytical method using the Strouhal Number. With numerical CFD calculations the flow can be analysed and via the acoustical analogy (Lighthill, Ffowcs-Williams − Hawkings (FW-H)) the sound generation of the turbulent flow can be calculated. The results of a CFD calculation are compared to the analytical prediction using the Strouhal Number. In addition, these results are compared to measurements with an acoustic camera.