Simultaneous Multiplane PIV and Microphone Array Measurements on a Rod-Airfoil Configuration

Experimental study of vortex–structure interaction noise radiated from rod–airfoil configurations

“…it is hard to recognise the vortex structure. The observations are consistent with the results obtained by Jacob et al (2005), Henning et al (2009) and Lorenzoni et al (2009. The downstream convective vortices directly impinge upon the airfoil leading edge, giving rise to high vortex-structure interaction noise.…”

“…Their results showed that the transverse location of the cylinder might have an impact on the radiated acoustic field. In order to identify the flow features that are responsible for the noise generation, Henning et al (2008Henning et al ( , 2009) performed dual PIV and simultaneous far-field microphone measurements. By means of a correlation-technique, they identified the regularities in the near-field fluctuations that are related to the radiated sound field.…”

Lagrangian and Eulerian pressure field evaluation of rod-airfoil flow from time-resolved tomographic PIV

“…For the rod-airfoil benchmark configuration (Jacob et al 2004), Henning et al (2009) recently investigated the mechanism of sound generation by means of simultaneous planar PIV in the near-field and phased-microphone-array measurements in the far-field. Cross-correlation between the acoustic pressure and velocity or vorticity fluctuations (Henning et al 2008) was applied to characterize flow structures involved in noise production.…”

Experimental approaches for the diagnostics of hydroacoustic problems in naval propulsion

“…Despite this approach allows investigating the dynamical characteristics of the flow events which are responsible for the noise emission only statistically, in some circumstances it might be effective for the localization of the noise sources, as shown in Henning at al. (2008Henning at al. ( , 2009Henning at al.…”