Large-scale structures of turbulent flows over an open cavity
Low Mach number turbulent flows over an open cavity were studied to investigate the
quantitative characteristics of large-scale vortical structures responsible for self-sustained
oscillations. Wind tunnel experiments with particle image velocimetry (PIV) were conducted
in the range of the ratio of cavity length (L) to depth (D), 1< L/D< 4, when the incoming
boundary layer is turbulent at Reθ= 830 and 1810. Self-sustained oscillation modes were
classified by varying the conditions of L/D and Reθ. The oscillation modes were consistent …
quantitative characteristics of large-scale vortical structures responsible for self-sustained
oscillations. Wind tunnel experiments with particle image velocimetry (PIV) were conducted
in the range of the ratio of cavity length (L) to depth (D), 1< L/D< 4, when the incoming
boundary layer is turbulent at Reθ= 830 and 1810. Self-sustained oscillation modes were
classified by varying the conditions of L/D and Reθ. The oscillation modes were consistent …
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