Identification of Sources of Wall Pressure Fluctuations Using Space–Time Pressure–Velocity Correlations

What is it about?

The motion of vehicular surfaces through turbulent flows give rise to pressure fluctuations on those surfaces which get radiated both outwards and inwards from that surface as noise. These pressure fluctuations can also give rise to structural vibrations and cause structural damage. No experimental evidence of a relationship between these surface pressure fluctuations and large-scale turbulent motions within turbulent flows exist. We present experimental evidence of a correlation between surface pressure fluctuations and large-scale turbulence. The findings allow researcher to narrow the domain of their focus to selective velocity components within turbulent flows and find their causal relationship with surface pressure.

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