4D-PIV的进展--空气流动发声的可视化

Aeroacoustics research approaches Sound in the far-fieldby phase-microphones array (field tests and large-anechoic wind tunnels) Phenomenological research by Computational aero-acoustics (CAA) - DNS, LES (direct approaches) - DNS+LEE, LES+BEM, RANS+SNGR (hybrid approaches) Surface pressure sensors and acoustic analogies e.g. Pressure transducers and Curle analogy Experimental noise-source identification by PIV statistical techniques (spatio-temporal velocity correlations) time-resolved analysis (velocity or derived pressure spectra) 德国LaVision PIV/PLIF粒子成像测速场仪 体视层析粒子成像测速系统(Tomo-PIV) HighSpeedStar PIV相机