Zobrazeno 1 - 10
of 568
pro vyhledávání: '"Plihon, A."'
Thermionic emission from a polycrystalline tungsten emissive cathode immersed in a magnetized plasma column is investigated experimentally and numerically. Electrical and optical measurements of the cathode temperature show a highly inhomogeneous cat
Externí odkaz:
http://arxiv.org/abs/2310.01280
The evolution of the normal aerodynamic coefficient of 19 configurations of square plates with various porosity patterns, ranging from solid plate to homogeneous porous plate, is experimentally characterized. The variation of the porosity pattern is
Externí odkaz:
http://arxiv.org/abs/2309.16295
The settling behavior of individual spheres in a quiescent fluid was studied experimentally. The dynamics of the spheres was analyzed in the parameter space of particle-to-fluid density ratio ($\Gamma$) and Galileo number ($\mathrm{Ga}$), with $\Gamm
Externí odkaz:
http://arxiv.org/abs/2304.11147
Fast camera imaging is used to study ion acoustic waves propagating azimuthally in a magnetized plasma column. The high speed image sequences are analyzed using Proper Orthogonal Decomposition and 2D Fourier Transform, allowing to evaluate the assets
Externí odkaz:
http://arxiv.org/abs/2301.03860
Publikováno v:
Phys. Rev. E 107 (2023) 034905
Dirt cones are meter-scale structures encountered at the surface of glaciers, which consist of ice cones covered by a thin layer of ashes, sand or gravel, and which form naturally from an initial patch of debris. In this article, we report field obse
Externí odkaz:
http://arxiv.org/abs/2212.08471
High speed camera imaging is a powerful tool to probe the spatiotemporal features of unsteady processes in plasmas, usually assuming light fluctuations to be a proxy for the plasma density fluctuations. In this article, we systematically compare high
Externí odkaz:
http://arxiv.org/abs/2112.11372
Publikováno v:
Phys. Rev. Fluids 7 (2022) 024301
The precise description of the motion of anisotropic particles in a flow rests on the understanding of the force and torque acting on them. Here, we study experimentally small, very elongated particles settling in a fluid at small Reynolds number. In
Externí odkaz:
http://arxiv.org/abs/2107.05918
Publikováno v:
Phys. Rev. Lett. 127, 108501 (2021)
A glacier table consists of a rock supported by a slender column of ice and form naturally on glaciers. We investigate the onset of their formation at a smaller scale in a controlled environment. Depending on the size and thermal conductivity of a ca
Externí odkaz:
http://arxiv.org/abs/2103.09760
Publikováno v:
In International Journal of Multiphase Flow January 2024 171
Publikováno v:
Phys. Rev. Lett. 126, 104501 (2021)
The transitions between two states of a bistable system are investigated experimentally and analyzed in the framework of rare-event statistics. Considering a disk pendulum swept by a flow in a wind tunnel, bistability between two aerodynamic branches
Externí odkaz:
http://arxiv.org/abs/2011.01063