Cross-flow pressure measurement on a 2D square cylinder

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• 作者：Li ; Y.F. ; Richards ; P.J. ; Flay ; R.G.J.
• 关键词：2D square cylinder ; Pressure measurement ; Frequency domain analysis
• 刊名：Journal of Wind Engineering and Industrial Aerodynamics
• 出版年：2001
• 出版时间：December, 2001
• 年：2001
• 卷：89
• 期：14-15
• 页码：1459-1470
• 全文大小：389 K

文摘

This paper presents and discusses the results of wind tunnel measurements of the pressure distributions on a 2D square cylinder in cross-flows at 3 different turbulence levels. Differential pressures across the lateral sides of the model were sampled simultaneously to give sets of signals at 5 different distances from the front surface. Power spectra, cross-spectra, coherence and normalised co-spectra of these signals were calculated. It was found that increasing turbulence in the flow caused a reduction in the normalised co-spectra at low frequencies and a reduction in the peak of power spectra at the shedding frequency.