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Particle transport through a duct by Lambertian reflection from duct walls is again considered. This popular transport example has been solved by most numerical transport methods except notably one- the method of doubling. We shall show…

计算物理 · 物理学 2016-02-02 Barry D. Ganapol

Microchannels are well-known in microfluidic applications for the control and separation of microdroplets and cells. Often the objects in the flow experience inertial effects, resulting in dynamics that is a departure from the underlying…

流体动力学 · 物理学 2022-01-19 Kyung Ha , Brendan Harding , Andrea L. Bertozzi , Yvonne M. Stokes

Direct numerical simulations (DNS) of particle-laden turbulent flow in straight, mildly curved and strongly bent pipes are performed in which the solid phase is modelled as small heavy spherical particles. A total of seven populations of…

流体动力学 · 物理学 2016-04-20 Azad Noorani , Gaetano Sardina , Luca Brandt , Philipp Schlatter

Neutral particle transport problems are fundamental in the modeling of energy transfer by radiation (photons) and by neutrons with many important applications. In this work, the novel ANN-MoC method for solving unidimensional neutral…

数值分析 · 数学 2023-07-19 P. H. A. Konzen

We have measured electron transport in small bundles of identical conducting Molybdenum Selenide nanowires where the number of weakly interacting one-dimensional chains ranges from 1-300. The linear conductance and current in these…

介观与纳米尺度物理 · 物理学 2009-11-11 Latha Venkataraman , Yeon Suk Hong , Philip Kim

We study the conservative and deterministic dynamics of two nonlinearly interacting particles evolving in a one-dimensional spatially periodic washboard potential. A weak tilt of the washboard potential is applied biasing one direction for…

统计力学 · 物理学 2011-02-07 D. Hennig , A. D. Burbanks , A. H. Osbaldestin

Particles traveling at high velocities through microfluidic channels migrate from their starting streamlines due to inertial lift forces. Theories predict different scaling laws for these forces and there is little experimental evidence by…

流体动力学 · 物理学 2017-07-06 Kaitlyn Hood , Soroush Kahkeshani , Dino Di Carlo , Marcus Roper

Driven lattice gases serve as canonical models for investigating collective transport phenomena and properties of non-equilibrium steady states (NESS). Here we study one-dimensional transport with nearest-neighbor interactions both in…

统计力学 · 物理学 2013-08-13 Marcel Dierl , Mario Einax , Philipp Maass

We present the first direct numerical simulations of particle-laden turbulent flow in concentric annuli to investigate the effects of transverse curvature over a range of Stokes numbers. The results demonstrate that transverse curvature…

流体动力学 · 物理学 2026-05-27 Taiyang Wang , Chi Zhang , Yaomin Zhao

The transport of atoms is experimentally studied in a transistor-like triple-well potential consisting of a narrow gate well surrounded by source and drain wells. Atoms are initially loaded into the source well with pre-determined…

原子物理 · 物理学 2016-02-17 Seth C. Caliga , Cameron J. E. Straatsma , Dana Z. Anderson

The paper considers heat conduction in a model chain of composite particles with hard core and elastic external shell. Such model mimics three main features of realistic interatomic potentials - hard repulsive core, quasilinear behavior in…

统计力学 · 物理学 2015-08-13 V. Zolotarevskiy , A. V. Savin , O. V. Gendelman

Particles suspended in fluid flow through a curved duct focus to stable equilibrium positions in the duct cross-section due to the balance of two dominant forces: (i) inertial lift force - arising from the inertia of the fluid, and (ii)…

流体动力学 · 物理学 2021-12-10 Rahil N. Valani , Brendan Harding , Yvonne M. Stokes

The flow of a liquid metal (LM) in a rectangular duct segment, subject to a uniform transverse magnetic field and uniform heating at the side walls is explored in an ample parameter space using Direct Numerical Simulation (DNS). We modify…

流体动力学 · 物理学 2026-04-15 Andreu Queralt McBride , Dmitry Krasnov , Yuri Kolesnikov , Jörg Schumacher

Cross-field electron transport in Hall thrusters is widely attributed to high-frequency $E\times B$ instabilities, yet its net spatial pathway remains poorly resolved. Here we perform instability-resolving three-dimensional particle-in-cell…

等离子体物理 · 物理学 2026-03-17 Zhe Liu , Zhongping Zhao , Yinjian Zhao

General discrete one-dimensional stochastic models to describe the transport of single molecules along coupled parallel lattices with period $N$ are developed. Theoretical analysis that allows to calculate explicitly the steady-state…

软凝聚态物质 · 物理学 2009-11-11 Evgeny B. Stukalin , Anatoly B. Kolomeisky

We investigate energy transport in several two-level atom or spin-1/2 models by a direct coupling to heat baths of different temperatures. The analysis is carried out on the basis of a recently derived quantum master equation which…

量子物理 · 物理学 2009-11-13 Mathias Michel , Ortwin Hess , Hannu Wichterich , Jochen Gemmer

Particle transport through an open, discrete 1-D channel against a mechanical or chemical bias is analyzed within a master equation approach. The channel, externally driven by time dependent site energies, allows multiple occupation due to…

统计力学 · 物理学 2015-05-18 Mario Einax , Gemma Solomon , Wolfgang Dieterich , Abraham Nitzan

One-dimensional non-equilibrium models of particles subjected to a coagulation-diffusion process are important in understanding non-equilibrium dynamics, and fluctuation-dissipation relation. We consider in this paper transport properties…

统计力学 · 物理学 2015-06-18 Jean-Yves Fortin

We investigate quantum transport in aligned carbon nanotube (CNT) fibers fabricated via solution spinning, focusing on the roles of structural dimensionality and quantum interference effects. The fibers exhibit metallic behavior at high…

Linear kinetic Monte Carlo particle transport models are frequently employed in fusion plasma simulations to quantify atomic and surface effects on the main plasma flow dynamics. Separate codes are used for transport of neutral particles…

等离子体物理 · 物理学 2015-06-03 J. Seebacher , A. Kendl
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