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Wavy pattern of ice with a specific wavelength occurs during ice growth from a thin layer of undercooled water flowing down the surface of icicles or inclined plane. In the preceding paper [K. Ueno, Phys. Rev. E {\bf 68}, 021603 (2003)], we…

材料科学 · 物理学 2009-11-10 K. Ueno

Structural defects in a crystal are responsible for the "two length-scale" behavior, in which a sharp central peak is superimposed over a broad peak in critical diffuse X-ray scattering. We have previously measured the scaling behavior of…

A new mechanism of double-component convection is discovered. It emerges in a horizontal layer of Boussinesq fluid as a stable stratification due to flux boundary conditions is added to an unstable gradient specified by fixed boundary…

流体动力学 · 物理学 2007-05-23 N. Tsitverblit

We report of a series of laboratory experiments and numerical simulations of freely-decaying rotating turbulent flows confined in domains with variable height. We show that the vertical confinement has important effects on the formation of…

流体动力学 · 物理学 2021-05-19 G. Boffetta , F. Toselli , M. Manfrin , M. Musacchio

We use numerical relativity simulations to describe the spacetime evolution during nonlinear structure formation in $\Lambda$CDM cosmology. Fully nonlinear initial conditions are set at an initial redshift $z\approx 300$, based directly on…

宇宙学与河外天体物理 · 物理学 2023-07-12 Robyn L. Munoz , Marco Bruni

This letter expands the stability criterion for radially stratified, vertically {unstratified} accretion disks incorporating thermal relaxation. We find a linear amplification of epicyclic oscillations in these disks that depends on the…

太阳与恒星天体物理 · 物理学 2015-06-19 Hubert Klahr , Alexander Hubbard

We investigate the formation and evolution of isothermal collapse nonuniformity for rotating magnetic interstellar clouds. The initial and boundary conditions correspond to the statement of the problem of homogeneous cloud contraction from…

天体物理学 · 物理学 2007-05-23 A. E. Dudorov , A. G. Zhilkin , N. Y. Zhilkina

We use direct numerical simulations to study convection in rotating Rayleigh-B\'enard convection in horizontally confined geometries of a given aspect ratio, with the walls held at fixed temperatures. We show that this arrangement is…

流体动力学 · 物理学 2024-11-05 S. Ravichandran , J. S. Wettlaufer

The extent and the morphology of ice forming in a differentially heated cavity filled with water is studied by means of experiments and numerical simulations. We show that the main mechanism responsible for the ice shaping is the existence…

流体动力学 · 物理学 2021-09-22 Ziqi Wang , Linfeng Jiang , Yihong Du , Chao Sun , Enrico Calzavarini

We employ a linear stability analysis and direct numerical simulations to study the characteristics of wall-modes in thermal convection in a rectangular box under strong and inclined magnetic fields. The walls of the convection cell are…

流体动力学 · 物理学 2023-09-06 Shashwat Bhattacharya , Thomas Boeck , Dmitry Krasnov , Jörg Schumacher

We study the temporal linear instability of channel flow subject to a tensorial slip boundary condition that models the slip effect induced by microgroove-type super-hydrophobic surfaces. The microgrooves are not necessarily aligned with…

流体动力学 · 物理学 2022-09-13 Xueyan Zhai , Kaiwen Chen , Baofang Song

Using X-ray diffuse scattering, we investigate the critical behavior of an order-disorder phase transition in a defective "skin-layer" of V2H. In the skin-layer, there exist walls of dislocation lines oriented normal to the surface. The…

Solid state convection can take place in the rocky or icy mantles of planetary objects and these mantles can be surrounded above or below or both by molten layers of similar composition. A flow toward the interface can proceed through it by…

流体动力学 · 物理学 2018-05-23 Stéphane Labrosse , Adrien Morison , Renaud Deguen , Thierry Alboussière

The present study is a prelude to applying different flow control devices on pitching and plunging airfoils with the intention of controlling the growth of the leading edge vortex (LEV); hence, the lift under unsteady stall conditions. As a…

流体动力学 · 物理学 2020-09-15 Johannes Kissing , Jochen Kriegseis , Zhenyao Li , Lihao Feng , Jeanette Hussong , Cameron Tropea

When a bubble of air rises to the top of a highly viscous liquid, it forms a dome-shaped protuberance on the free surface. Unlike a soap bubble, it bursts so slowly as to collapse under its own weight simultaneously, and folds into a…

软凝聚态物质 · 物理学 2015-06-24 Rava da Silveira , Sahraoui Chaieb , L. Mahadevan

We describe our modelling of the radiatively cooling shocks and their thin shells with various numerical tools in different physical and calculational setups. We inspect structure of the dense shell, its formation and evolution, pointing…

高能天体物理现象 · 物理学 2016-05-05 D. A. Badjin , S. I. Glazyrin , K. V. Manukovskiy , S. I. Blinnikov

The linked fluid dynamics videos depict Rayleigh-Taylor turbulence when driven by a complex acceleration profile involving two stages of acceleration interspersed with a stage of stabilizing deceleration. Rayleigh-Taylor (RT) instability…

流体动力学 · 物理学 2013-10-15 P. Ramaprabhu , V. Karkhanis , A. G. W. Lawrie

The displacement of a fluid by another less viscous one in a quasi-two dimensional geometry typically leads to complex fingering patterns. In an isotropic system, dense-branching growth arises, which is characterized by repeated…

流体动力学 · 物理学 2021-01-19 Qing Zhang , Amin Amooie , Martin Z. Bazant , Irmgard Bischofberger

This paper is the first part of a two-fold study of mixing, i.e. the formation of layers and upwelling of buoyancy, in axially stratified Taylor--Couette flow, with fixed outer cylinder. Using linear analysis and direct numerical…

When vortex rings collide head-on at high enough Reynolds numbers, they ultimately annihilate through a violent interaction which breaks down their cores into a turbulent cloud. We experimentally show that this very strong interaction,…