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