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We interpret measurements of the Reynolds number dependence of the torque in Taylor-Couette flow by Lewis and Swinney [Phys. Rev. E 59, 5457 (1999)] and of the pressure drop in pipe flow by Smits and Zagarola, [Phys. Fluids 10, 1045 (1998)]…

混沌动力学 · 物理学 2009-10-31 Bruno Eckhardt , Siegfried Grossmann , Detlef Lohse

In this article, we prove the global well-posedness and scattering of the cubic focusing infinite coupled nonlinear Schr\"odinger system on $\mathbb{R}^2$ below the threshold in $L_x^2h^1(\mathbb{R}^2\times \mathbb{Z})$. We first establish…

偏微分方程分析 · 数学 2022-02-23 Xing Cheng , Zihua Guo , Gyeongha Hwang , Haewon Yoon

We investigate how thin structures change their shape in response to non-mechanical stimuli that can be interpreted as variations in the structure's natural curvature. Starting from the theory of non-Euclidean plates and shells, we derive…

软凝聚态物质 · 物理学 2017-06-08 Matteo Pezzulla , Norbert Stoop , Xin Jiang , Douglas P. Holmes

We consider the evolution of a family of 2D dispersive turbulence models. The members of this family involve the nonlinear advection of a dynamically active scalar field, the locality of the streamfunction-scalar relation is denoted by…

流体动力学 · 物理学 2009-02-20 Jai Sukhatme , Leslie M. Smith

Intermittency, measured as log(F(r)/3), where F(r) is the flatness of velocity increments at scale r, is found to rapidly increase as viscous effects intensify, and eventually saturate at very small scales. This feature defines a finite…

统计力学 · 物理学 2007-05-23 Laurent Chevillard , Bernard Castaing , Emmanuel Leveque

Mass transfer from a composite cylinder - made of an inner core and an outer enveloping semipermeable shell - under channel crossflow is studied numerically using two-dimensional lattice-Boltzmann simulations. The core is initially loaded…

流体动力学 · 物理学 2021-11-23 Clément Bielinski , Nam Le , Badr Kaoui

We continue our study of scattering theory and dispersive properties for one-dimensional charge transfer models, namely linear Schr\"odinger equations with multiple moving potentials. By the discovery of a refined structure of the…

偏微分方程分析 · 数学 2025-10-15 Gong Chen , Abdon Moutinho

By the early 1960's advances in statistical physics had established the existence of universality classes for systems with second-order phase transitions and characterized these by critical exponents which are different to the classical…

统计力学 · 物理学 2017-08-23 Ralph Kenna

We study scaling of the superfluid density with respect to the film thickness by simulating the $x-y$ model on films of size $L \times L \times H$ ($L >> H$) using the cluster Monte Carlo. While periodic boundary conditions where used in…

凝聚态物理 · 物理学 2009-10-28 Norbert Schultka , Efstratios Manousakis

Using high-fidelity numerical simulations based on a lattice Boltzmann framework, the advection-enhanced transport of a passive scalar from a prolate spheroid in simple shear flow has been thoroughly investigated across various parameters,…

流体动力学 · 物理学 2025-10-15 Yanxing Wang , Hui Wan , Tie Wei , Fangjun Shu

Universality is key to the theory of phase transition stating that the equilibrium properties of observables near a phase transition can be classified according to few critical exponents. These exponents rule an universal scaling behaviour…

General theory of d-wave quasiparticles coupled to phase fluctuations of superconducting order parameter is discussed. In the charge sector the superfluid density is found to conform to Uemura scaling, and the charge renormalization factor…

超导电性 · 物理学 2009-11-10 Igor F. Herbut

Many physical systems share the property of scale invariance. Most of them show ordinary power-law scaling, where quantities can be expressed as a leading power law times a scaling function which depends on scaling-invariant ratios of the…

统计力学 · 物理学 2009-11-07 Lionel Sittler , Haye Hinrichsen

The coupled evolution of an eroding cylinder immersed in a fluid within the subcritical Reynolds range is explored with scale resolving simulations. Erosion of the cylinder is driven by fluid shear stress. K\'arm\'an vortex shedding…

流体动力学 · 物理学 2017-03-14 James N. Hewett , Mathieu Sellier

We address the critical and universal aspects of counterion-condensation transition at a single charged cylinder in both two and three spatial dimensions using numerical and analytical methods. By introducing a novel Monte-Carlo sampling…

软凝聚态物质 · 物理学 2007-05-23 Ali Naji , Roland R. Netz

The observation of scaling in processes in which a weakly interacting probe delivers large momentum ${\bf q}$ to a many-body system reflects the dominance of incoherent scattering off target constituents. While a suitably defined scaling…

核理论 · 物理学 2007-05-23 Omar Benhar

An innovative technique, called conversion, is introduced to model circumferential cracks in thin cylindrical shells. The semi-analytical finite element method is applied to investigate the modal deformation of the cylinder. An element…

数值分析 · 数学 2021-07-21 Ali Alijani , Olga Barrera , Stephane P. A. Bordas

We consider the random lasing from a weakly scattering medium and demonstrate that the distribution of the threshold gain over the ensemble of statistically independent finite-size samples is universal. Universality stems from the facts…

无序系统与神经网络 · 物理学 2009-11-10 V. M. Apalkov , M. E. Raikh

We develop a new numerical method for thin plates falling in inviscid fluid that allows for leading-edge vortex shedding. The inclusion of leading-edge shedding restores physical dynamics to vortex-sheet models of falling bodies, and for…

流体动力学 · 物理学 2025-10-02 Yu Jun Loo , Silas Alben

We present a new method for evaluating tensor integrals in the large-scale structure. Decomposing a $\Lambda$CDM-like universe into a finite sum of scaling universes using the FFTLog, we can recast loop integrals for biased tracers in the…

宇宙学与河外天体物理 · 物理学 2024-10-21 Hayden Lee