Physical Review E
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
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
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
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
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
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
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
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
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”
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
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
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
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
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
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
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
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
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
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
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