Philippe Petitjeans
Directeur, PMMH - UMR 7636 - Physique et Mécanique des Milieux Hétérogènes
Institution:
USPC - SET - SVS
Paris, France
https://www.mysciencework.com/profile/philippe.petitjeans
Summary
Published articles Show More
Different regimes for water wave turbulence
The experimental investigations on gravity-capillary water wave turbulence (WT) were studied. The behavior of the wave energy density in the wavenumber-frequency space was inspected for various forcing frequency bandwidths and forcing amplitudes. Depending on the bandwidth, the gravity spectral slope is found to be either forcing dependent, as clas...
Experimental study of water wave carpet cloak
It has been proposed by Li and Pendry ( Phys. Rev. Lett. 101, 203901 2008) a so-called carpet cloak able to conceal an object under a curved reflecting surface, imitating the reflection of the flat surface. Since, such cloaking has been tested experimentally in the context of electromagnetic and acoustic waves. The ability of cloaking floating st...
Experimental time reversal of water waves
The phenomenon of the time reversal refocusing of gravity-capillary waves in water tank cavity has been studied experimentally. The injection of a short pulse imposed by the wave generator leads (after several reflections from the boundaries of the tank/obstacles) to the appearance of the complex pattern. By re-injection of the time-reversed signal...
Preprints Show More
Wave turbulence served up on a plate
Wave turbulence in a thin elastic plate is experimentally investigated. By using a Fourier transform profilometry technique, the deformation field of the plate surface is measured simultaneously in time and space. This enables us to compute the wavevector-frequency Fourier (𝐤, ω) spectrum of the full space-time deformation velocity. In the 3D (𝐤, ω...
