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There is a quickly increasing wealth of experimental data on so-called dusty plasmas i. e. ionized gases or usual plasmas that contain micron sized charged particles. Interest in these structures is driven both by their importance in many…

等离子体物理 · 物理学 2009-11-13 Barbara Atamaniuk , Krzysztof Zuchowski

We investigate the hydroelastic wake created by a perturbation moving at constant speed along a thin elastic sheet floating at the surface of deep water. Using a high-resolution cross-correlation imaging technique, we characterize the waves…

Experimental data on the viscosity and self-diffusion coefficient of two metallic compounds in their fluid phases, i.e. potassium and thallium, are modeled using the translational elastic mode theory which has been successfully applied to…

统计力学 · 物理学 2022-01-21 F. Aitken , F. Volino

If a porous media is being damaged by excessive stress, the elastic matrix at every infinitesimal volume separates into a 'solid' and a 'broken' component. The 'solid' part is the one that is capable of transferring stress, whereas the…

流体动力学 · 物理学 2023-05-09 François Gay-Balmaz , Vakhtang Putkaradze

Geophysical fluids such as the ocean and atmosphere can be stratified: their density depends on the depth. As a consequence, they can host internal gravity waves that propagate in the bulk of the fluid, far from the surface. These waves can…

大气与海洋物理 · 物理学 2021-11-16 Sasan J. Ghaemsaidi , Michel Fruchart , Severine Atis

We investigate a new class of topological travelling-wave solutions for a macroscopipc swarmalator model involving force non-reciprocity. Swarmalators are systems of self-propelled particles endowed with a phase variable. The particles are…

数学物理 · 物理学 2023-07-28 Pierre Degond , Antoine Diez

This work investigates the effects of time-varying media, where optical properties change over time, on electromagnetic wave propagation, focusing on plane waves and free-electron evanescent waves. We introduce a switching parameter,…

The thermal expansion of a fluid combined with a temperature-dependent viscosity introduces nonlinearities in the Navier-Stokes equations unrelated to the convective momentum current. The couplings generate the possibility for net fluid…

软凝聚态物质 · 物理学 2009-11-13 Franz M. Weinert , Jonas A. Kraus , Thomas Franosch , Dieter Braun

The transverse velocity time correlation function ${\tilde C}_{\rm T}(k,\omega)$ with $k$ and $\omega$ being the wavenumber and the frequency, respectively, is a fundamental quantity in determining the transverse mechanical and transport…

软凝聚态物质 · 物理学 2021-06-23 Akira Furukawa

This experimental study investigates the dynamical transition from stable operation to thermoacoustic instability in a turbulent bluff-body stabilized dump combustor. We conduct experiments to characterize the dynamical transition utilizing…

流体动力学 · 物理学 2022-01-12 M. Raghunathan , N. B. George , V. R Unni , J. Kurths , E. Surovyatkina , R. I. Sujith

An alternative step in understanding the flows of near wall drag-reducing turbulence can be examining the flow in a well-organized streamwise vortex with a laminar background. Herein, we studied the flow behaviors of the Giesekus…

流体动力学 · 物理学 2019-09-11 Tomohiro Nimura , Takuya Kawata , Takahiro Tsukahara

Previous numerical investigations of the stability and bifurcation properties of different nonlinear combination structures of spiral vortices in a counterrotating Taylor-Couette system that were done for fixed axial wavelengths are…

斑图形成与孤子 · 物理学 2008-07-19 A. Pinter , M. Lücke , Ch. Hoffmann

We study the mobility of an overdamped particle in a periodic potential tilted by a constant force. The mobility exhibits a stochastic resonance in inhomogeneous systems with space dependent friction coefficient. The result indicates that…

统计力学 · 物理学 2009-10-31 Debasis Dan , Mangal. C. Mahato , A. M. Jayannavar

A solid conducts heat through both transverse and longitudinal acoustic phonons, but a liquid employs only longitudinal vibrations. Here, we report that the crystalline solid AgCrSe2 has liquid-like thermal conduction. In this compound, Ag…

This paper studies periodic traveling gravity waves at the free surface of water in a flow of constant vorticity over a flat bed. Using conformal mappings the free-boundary problem is transformed into a quasilinear pseudodifferential…

偏微分方程分析 · 数学 2015-05-14 Adrian Constantin , Eugen Varvaruca

We investigate wave propagation and energy transport in magnetic elements, which are representatives of small scale magnetic flux concentrations in the magnetic network on the Sun. This is a continuation of earlier work by Hasan et al.…

太阳与恒星天体物理 · 物理学 2015-05-14 G. Vigeesh , S. S. Hasan , O. Steiner

In the present study, we conduct direct numerical simulations of two-way force-coupled particle-laden compressible turbulent boundary layers at the free-stream Mach number of 2.0 for the purpose of examining the effects of particles on the…

流体动力学 · 物理学 2024-07-01 Ming Yu , Yibin Du , Qian Wang , Siwei Dong , Xianxu Yuan

We study the dynamics of surface waves on a semi-toroidal ring of water that is excited by vertical vibration. We create this specific fluid volume by patterning a glass plate with a hydrophobic coating, which confines the fluid to a…

流体动力学 · 物理学 2007-06-24 Sunghwan Jung , Erica Kim , Michael Shelley , Jun Zhang

Ocean wave energy is a new renewable energy resource which is going to become one of the reliable and alternative resources for fossil fuels during recent decades. The majority of studies have focused on extract wave energy at an effective…

流体动力学 · 物理学 2017-01-11 Abbas Yeganeh-Bakhtiary , Milad Rezaee

Disk accretion at high rate onto a white dwarf or a neutron star has been suggested to result in the formation of a spreading layer (SL) - a belt-like structure on the object's surface, in which the accreted matter steadily spreads in the…

太阳与恒星天体物理 · 物理学 2016-01-27 Alexander A. Philippov , Roman R. Rafikov , James M. Stone