Thomas F. Geyer

TL;DR: In this paper, an experimental survey on a set of airfoils made of different porous materials was carried out to gain a better understanding of the aeroacoustic effects of the third property that is equivalent to an increased permeability of the plumage to air.

TL;DR: This paper provides a review of the most well-known and state-of-the-art acoustic imaging methods and recommendations on when to use them, as well as a broad overview for general aeroacoustic experts.

TL;DR: The Brandenburg University of Technology at Cottbus is a newly commissioned research facility for the experimental study of sound generation from bodies immersed in a fluid flow as mentioned in this paper, where the design criteria for the open jet wind tunnel that provides a maximum wind speed of 72m/s at continuous operation and may be operated with nozzles of different dimension between 35cm diameter (circular nozzle) and 12 cm by 14.7 cm (rectangular nozzle).

TL;DR: In this paper, the authors used a moving-focus beamforming technique to estimate the trajectory of an owl flight from dual video camera recordings and microphone-array measurements with a moving focus beamforming.

TL;DR: In this paper, the boundary layer properties of porous airfoils and the noise generated at the trailing edge were analyzed using a planar 56-channel microphone array and the boundary layers were measured using constant temperature anemometry.