Physical Review E

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Recently published articles in Phys. Rev. E in the Table of Content section "Fluid dynamics"
Updated: 6 hours 54 min ago

Enhanced transport of ions by tuning surface properties of the nanochannel

Wed, 09/22/2021 - 11:00

Author(s): Olga I. Vinogradova, Elena F. Silkina, and Evgeny S. Asmolov

Motivated by recent observations of anomalously large deviations of the conductivity currents in confined systems from the bulk behavior, we revisit the theory of ion transport in parallel-plate channels and also discuss how the wettability of a solid and the mobility of adsorbed surface charges imp...

[Phys. Rev. E 104, 035107] Published Wed Sep 22, 2021

Secondary instability of the spike-bubble structures induced by nonlinear Rayleigh-Taylor instability with a diffuse interface

Wed, 09/22/2021 - 11:00

Author(s): Lin Han, Jianjie Yuan, Ming Dong, and Zhengfeng Fan

Laminar-turbulent transition in Rayleigh-Taylor (RT) flows usually starts with infinitesimal perturbations, which evolve into the spike-bubble structures in the nonlinear saturation phase. It is well accepted that the emergence and rapid amplification of the small-scale perturbations are attributed ...

[Phys. Rev. E 104, 035108] Published Wed Sep 22, 2021

Thermodynamics of fluctuations based on time-and-space averages

Mon, 09/20/2021 - 11:00

Author(s): James E. McClure, Steffen Berg, and Ryan T. Armstrong

We develop nonequilibrium theory by using averages in time and space as a generalized way to upscale thermodynamics in nonergodic systems. The approach offers a classical perspective on the energy dynamics in fluctuating systems. The rate of entropy production is shown to be explicitly scale depende...

[Phys. Rev. E 104, 035106] Published Mon Sep 20, 2021

Spectrally wide acoustic frequency combs generated using oscillations of polydisperse gas bubble clusters in liquids

Wed, 09/08/2021 - 11:00

Author(s): Bui Quoc Huy Nguyen, Ivan S. Maksymov, and Sergey A. Suslov

Acoustic frequency combs leverage unique properties of the optical frequency comb technology in high-precision measurements and innovative sensing in optically inaccessible environments such as under water, under ground, or inside living organisms. Because acoustic combs with wide spectra would be r...

[Phys. Rev. E 104, 035104] Published Wed Sep 08, 2021

Geometry of catenoidal soap film collapse induced by boundary deformation

Wed, 09/08/2021 - 11:00

Author(s): Raymond E. Goldstein, Adriana I. Pesci, Christophe Raufaste, and James D. Shemilt

Experimental and theoretical work reported here on the collapse of catenoidal soap films of various viscosities reveal the existence of a robust geometric feature that appears not to have been analyzed previously; prior to the ultimate pinchoff event on the central axis, which is associated with the...

[Phys. Rev. E 104, 035105] Published Wed Sep 08, 2021

Elastic-plastic Rayleigh-Taylor instability at a cylindrical interface

Tue, 09/07/2021 - 11:00

Author(s): A. R. Piriz, S. A. Piriz, and N. A. Tahir

The boundaries of stability are determined for the Rayleigh-Taylor instability at a cylindrical interface between an ideal fluid in the interior and a heavier elastic-plastic solid in the outer region. The stability maps are given in terms of the maximum dimensionless initial amplitude ξth* that can...

[Phys. Rev. E 104, 035102] Published Tue Sep 07, 2021

Statistical properties of two-dimensional elastic turbulence

Tue, 09/07/2021 - 11:00

Author(s): Himani Garg, Enrico Calzavarini, and Stefano Berti

We numerically investigate the spatial and temporal statistical properties of a dilute polymer solution in the elastic turbulence regime, i.e., in the chaotic flow state occurring at vanishing Reynolds and high Weissenberg numbers. We aim at elucidating the relations between measurements of flow pro...

[Phys. Rev. E 104, 035103] Published Tue Sep 07, 2021

Instabilities of thermocapillary-buoyancy flow in a rotating annular pool for medium-Prandtl-number fluid

Wed, 09/01/2021 - 11:00

Author(s): Hao Liu, Jinchao He, Zhong Zeng, and Zhouhua Qiu

The instabilities of the steady axisymmetric thermocapillary-buoyancy flow in a rotating annular pool were investigated by linear stability analysis. The critical instability parameters for the thermocapillary-buoyancy flow (normal gravity) and the pure thermocapillary flow (microgravity) were compa...

[Phys. Rev. E 104, 035101] Published Wed Sep 01, 2021

Modeling transport of soft particles in porous media

Mon, 08/30/2021 - 11:00

Author(s): Shuaijun Li, Hong-hui Yu, and Jing Fan

Flow-driven transport of soft particles in porous media is ubiquitous in many natural and engineering processes, such as the gel treatment for enhanced oil recovery. In many of these processes, injected deformable particles block the pores and thus increase the overall pressure drop and reduce the p...

[Phys. Rev. E 104, 025112] Published Mon Aug 30, 2021

Comment on “Turbulent compressible fluid: Renormalization group analysis, scaling regimes, and anomalous scaling of advected scalar fields”

Mon, 08/30/2021 - 11:00

Author(s): Juha Honkonen

Recently, asymptotic scaling behavior of the compressible randomly forced Navier-Stokes equation has been analyzed with the use of field-theoretic renormalization group near four dimensions [Phys. Rev. E 95, 033120 (2017)]. Two infrared stable nontrivial asymptotic scaling patterns have been found a...

[Phys. Rev. E 104, 027101] Published Mon Aug 30, 2021

Linear analysis of Rayleigh-Taylor instability in viscoelastic materials

Fri, 08/27/2021 - 11:00

Author(s): J. N. Gou, W. T. Zan, Y. B. Sun, and C. Wang

Rayleigh-Taylor instability (RTI) has become a powerful tool for determining the mechanical properties of materials under extreme conditions. In this paper, we first present the exact and approximate linear dispersion relations for RTI in viscoelastic materials based on the Maxwell and Kelvin-Voigt ...

[Phys. Rev. E 104, 025110] Published Fri Aug 27, 2021

Macroscopic and microscopic hydrodynamic mixing of stratified suspensions

Fri, 08/27/2021 - 11:00

Author(s): Yasufumi Yamamoto, Koki Yamada, Yohsuke Tanaka, and Shusaku Harada

We conducted numerical experiments to investigate the mixing of stratified suspensions containing different types of particles. We used a point-force two-way coupling method. We studied the mixing behavior of stratified suspensions and we discovered two types of mixing: microscopic (individual-parti...

[Phys. Rev. E 104, 025111] Published Fri Aug 27, 2021

Influence of particle-fluid density ratio on the dynamics of finite-size particles in homogeneous isotropic turbulent flows

Thu, 08/26/2021 - 11:00

Author(s): Jie Shen, Zhiming Lu, Lian-Ping Wang, and Cheng Peng

In this paper, direct numerical simulations of particle-laden homogeneous isotropic turbulence are performed using lattice Boltzmann method incorporating interpolated bounce-back scheme. Four different particle-fluid density ratios are considered to explore how particles with different particle-flui...

[Phys. Rev. E 104, 025109] Published Thu Aug 26, 2021

Turbulence and capillary waves on bubbles

Tue, 08/24/2021 - 11:00

Author(s): Peleg Emanuel and Alexander Feigel

We present a link between the theory of deep water waves and that of bubble surface perturbations. Theory correspondence is shown analytically for small wavelengths in the linear regime and investigated numerically in the nonlinear regime. To do so, we develop the second-order spatial perturbation e...

[Phys. Rev. E 104, 025108] Published Tue Aug 24, 2021

Distribution of liquid flow in a pore network during evaporation

Mon, 08/23/2021 - 11:00

Author(s): Rui Wu and C. Y. Zhao

The variation of the distribution of the liquid flow in porous media during evaporation is still a puzzle. We resolve it with the pore network modeling approach. The distribution of the evaporation-induced liquid flow in a pore network composed of about 2.5 million pores is determined. The probabili...

[Phys. Rev. E 104, 025107] Published Mon Aug 23, 2021

Spatial wake transition past a thin pitching plate

Wed, 08/18/2021 - 11:00

Author(s): Arnab Kumar De and Sandip Sarkar

The spatial transition of the wake behind a thin pitching plate in the thrust regime is studied. The drag-to-thrust transition is seen to occur at a threshold pitching frequency which becomes smaller for higher pitching angle and aspect ratio. The reverse von Kármán wake shows deflected asymmetric v...

[Phys. Rev. E 104, 025106] Published Wed Aug 18, 2021

Dynamic measurement of the acoustic streaming time constant utilizing an optical tweezer

Mon, 08/16/2021 - 11:00

Author(s): Christoph Goering and Jürg Dual

The combination of a bulk acoustic wave device and an optical trap allows for studying the buildup time of the respective acoustic forces. In particular, we are interested in the time it takes to build up the acoustic radiation force and acoustic streaming. For that, we measure the trajectory of a s...

[Phys. Rev. E 104, 025104] Published Mon Aug 16, 2021

Local wave-number model for inhomogeneous two-fluid mixing

Mon, 08/16/2021 - 11:00

Author(s): Nairita Pal, Ismael Boureima, Noah Braun, Susan Kurien, Praveen Ramaprabhu, and Andrew Lawrie

We analyze the local wave-number (LWN) model, a two-point spectral closure model for turbulence, as applied to the Rayleigh-Taylor (RT) instability, the flow induced by the relaxation of a statically-unstable density stratification. Model outcomes are validated against data from 3D simulations of th...

[Phys. Rev. E 104, 025105] Published Mon Aug 16, 2021

Two separate decay timescales of a detonation wave modeled by the Burgers equation and their relation to its chaotic dynamics

Fri, 08/13/2021 - 11:00

Author(s): S. S.-M. Lau-Chapdelaine and M. I. Radulescu

This study uses a simplified detonation model to investigate the behavior of detonations with galloping-like pulsations. The reactive Burgers equation is used for the hydrodynamic equation, coupled to a pulsed source whereby all the shocked reactants are simultaneously consumed at fixed time interva...

[Phys. Rev. E 104, 025103] Published Fri Aug 13, 2021

Competition of overstability and stabilizing effects in viscoelastic thermovibrational flow

Wed, 08/11/2021 - 11:00

Author(s): Alessio Boaro and Marcello Lappa

Attention is paid to a specific form of thermal convection which encompasses viscoelastic and thermovibrational effects in a single problem or framework. The main objective is understanding the relationship between the phenomenon of overstability and periodic forcing through numerical solution of th...

[Phys. Rev. E 104, 025102] Published Wed Aug 11, 2021