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Inicio  /  Aerospace  /  Vol: 10 Par: 6 (2023)  /  Artículo
ARTÍCULO
TITULO

Mode Switching in a Compressible Rectangular Cavity Flow

Yi-Xuan Huang and Kung-Ming Chung    

Resumen

This study determines the mean and fluctuating pressures for flow through a rectangular shallow cavity (ratio between the length and the depth = 2.43, 4.43, and 6.14; ratio between the length and the width = 0.5, 1.0, and 2.0) at a Mach number of 0.64 in a blowdown transonic wind tunnel. A amplitude modulation analysis is used for the post-processing of the fluctuating pressure signals. The spectral analysis (wavelet) shows the intermittent behavior of the discrete Rossiter?Heller modes. A correlation analysis determines that mode switching is more significant between the second and third modes (organized structures that are associated with shear layer vortices), particularly for two-dimensional and shallower cavities.

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