PhD funding – 3D wavefront shaping through a waveguide with disorder

MAINE Flow is a 28 ×15 cm2 rectangular duct facility recently developed at LAUM for the purpose of studying acoustic liners, which are wall treatments used to reduce the noise generated by aircraft engines. The primary objective of MAINE Flow is to replicate
realistic conditions for these liners, encompassing high-speed flows (up to Mach 0.6) and a multimodal incident wave field of large amplitude (up to 150 dB). One of the most interesting aspects of this experimental facility is the ability to control the modal content propagating within the duct, even at 4000 Hz where approximately 25 modes are cut-on.
Additionally, two antennas of 60 microphones enable the measurement of the multimodal scattering matrix of the lined section. The fact that we control and decompose precisely the acoustic field in the duct is highly valuable for characterizing liners, and the aim of this PhD thesis is to extend this feature in order to perform wavefront shaping in presence of multiple scatterers placed inside the duct test section. (…)

More informations on the link below.