Physical Review E
Discontinuous contact line motion of evaporating particle-laden droplet on superhydrophobic surfaces
Author(s): Yutaka Yamada and Akihiko Horibe
The three-phase contact line motion on a superhydrophobic surface through particle-laden sessile droplet evaporation was investigated. Sample surfaces with micro- and nanoscale structures were generated by various durations of chemical treatment and SiO2 spherical particles with different sizes were...
[Phys. Rev. E 97, 043113] Published Fri Apr 20, 2018
Appearance of deterministic mixing behavior from ensembles of fluctuating hydrodynamics simulations of the Richtmyer-Meshkov instability
Author(s): Kiran Narayanan and Ravi Samtaney
We obtain numerical solutions of the two-fluid fluctuating compressible Navier-Stokes (FCNS) equations, which consistently account for thermal fluctuations from meso- to macroscales, in order to study the effect of such fluctuations on the mixing behavior in the Richtmyer-Meshkov instability (RMI). ...
[Phys. Rev. E 97, 043111] Published Thu Apr 19, 2018
Author(s): Manash Pratim Borthakur, Gautam Biswas, and Dipankar Bandyopadhyay
A computational fluid dynamic investigation has been carried out to study the dynamics of a moving compound droplet inside a tube. The motions associated with such a droplet is uncovered by solving the axisymmetric Navier-Stokes equations in which the spatiotemporal evolution of a pair of twin-defor...
[Phys. Rev. E 97, 043112] Published Thu Apr 19, 2018
Author(s): S. Mollaei, M. Nasiri, N. Soltanmohammadi, R. Shirsavar, A. Ramos, and A. Amjadi
Net fluid flow of soap films induced by (ac or dc) electric fields in asymmetric frames is presented. Previous experiments of controllable soap film flow required the simultaneous use of an electrical current passing through the film and an external electric field or the use of nonuniform ac electri...
[Phys. Rev. E 97, 043110] Published Tue Apr 17, 2018
Author(s): Seyed Mostafa Jafari Raad and Hassan Hassanzadeh
Linear stability analysis is conducted to study the onset of density-driven convection involved in solubility trapping of CO2 in fractured aquifers. The effect of physical properties of a fracture network on the stability of a diffusive boundary layer in a saturated fractured porous media is investi...
[Phys. Rev. E 97, 043109] Published Thu Apr 12, 2018
Author(s): Jianchun Wang, Minping Wan, Song Chen, Chenyue Xie, and Shiyi Chen
This paper examines the spectra of the velocity and several thermodynamic variables in compressible turbulence in the presence of large-scale shock waves. The authors perform simulations of turbulence driven by solenoidal and compressible forces for a range of Mach numbers, and are able to extract different scaling behaviors. In addition, they propose heuristic ways to account for the observations.
[Phys. Rev. E 97, 043108] Published Wed Apr 11, 2018
Marangoni instability in a thin film heated from below: Effect of nonmonotonic dependence of surface tension on temperature
Author(s): Rajkumar Sarma and Pranab Kumar Mondal
We investigate Marangoni instability in a thin liquid film resting on a substrate of low thermal conductivity and separated from the surrounding gas phase by a deformable free surface. Considering a nonmonotonic variation of surface tension with temperature, here we analytically derive the neutral s...
[Phys. Rev. E 97, 043105] Published Mon Apr 09, 2018
Author(s): S. A. Piriz, A. R. Piriz, and N. A. Tahir
The linear theory of Rayleigh-Taylor instability is developed for the case of a viscous fluid layer accelerated by a semi-infinite viscous fluid, considering that the top interface is a free surface. Effects of the surface tensions at both interfaces are taken into account. When viscous effects domi...
[Phys. Rev. E 97, 043106] Published Mon Apr 09, 2018
Author(s): Jayabrata Dhar and Suman Chakraborty
The flow of nematic liquid crystals (NLCs) in the presence of an electric field is typically characterized by the variation in its rheological properties due to transition in its molecular arrangements. Here, we bring out a nontrivial interplay of a consequent alteration in the resistive viscous eff...
[Phys. Rev. E 97, 043107] Published Mon Apr 09, 2018
Author(s): Peng Wang, Lianhua Zhu, Wei Su, Lei Wu, and Yonghao Zhang
The nonlinear oscillation of rarefied gas flow inside a two-dimensional rectangular cavity is investigated on the basis of the Shakhov kinetic equation. The gas dynamics, heat transfer, and damping force are studied numerically via the discrete unified gas-kinetic scheme for a wide range of paramete...
[Phys. Rev. E 97, 043103] Published Thu Apr 05, 2018
Author(s): Neta Leibowitz, Jarrod Schiffbauer, Sinwook Park, and Gilad Yossifon
We report evidence of variation in ion selectivity of a fabricated microchannel-nanochannel device resulting in the appearance of a distinct local maximum in the overlimiting chronopotentiometric response. In this system consisting of shallow microchannels joined by a nanochannel, viscous shear at t...
[Phys. Rev. E 97, 043104] Published Thu Apr 05, 2018
Author(s): Gustavo Castillo and Claudio Falcón
We report on the generation of an intermittent wave field driven by a horizontally moving wave maker interacting with Faraday waves. The spectrum of the local gravitocapillary surface wave fluctuations displays a power law in frequency for a wide range of forcing parameters. We compute the probabili...
[Phys. Rev. E 97, 043101] Published Tue Apr 03, 2018
Author(s): Raksha Mahalinkam, Felicity Gong, and Aditya S. Khair
The inertial locomotion of an elongated model swimmer in a Newtonian fluid is quantified, wherein self-propulsion is achieved via steady tangential surface treadmilling. The swimmer has a length 2l and a circular cross section of longitudinal profile aR(z), where a is the characteristic width of the...
[Phys. Rev. E 97, 043102] Published Tue Apr 03, 2018
Author(s): M. Garzon, L. J. Gray, and J. A. Sethian
The coalescence, and subsequent satellite formation, of two inviscid droplets is studied numerically. The initial drops are taken to be of equal and different sizes, and simulations have been carried out with and without the presence of an electrical field. The main computational challenge is the tr...
[Phys. Rev. E 97, 033112] Published Fri Mar 30, 2018
Author(s): Bihai Zhu, Zengqi Ji, Zhengkun Lou, and Pengcheng Qian
The torque in the Taylor-Couette flow for radius ratios η≥0.97, with smooth or grooved wall static outer cylinders, is studied experimentally, with the Reynolds number of the inner cylinder reaching up to Rei=2×105, corresponding to the Taylor number up to Ta=5×1010. The grooves are perpendicular to...
[Phys. Rev. E 97, 033110] Published Mon Mar 26, 2018
Author(s): Minh Doan, J. J. Simons, Katherine Lilienthal, Tom Solomon, and Kevin A. Mitchell
This paper presents an experimental study of front propagation in three-dimensional flows, showing evidence of one-way barriers that hinder the motion of the reaction fronts. In order to explain their results, the authors extend the burning-invariant-manifold theory to three dimensions, which enables them to capture the main features of the experimental results.
[Phys. Rev. E 97, 033111] Published Mon Mar 26, 2018
Author(s): Zhi-Rui Zhou, You-Sheng Zhang, and Bao-Lin Tian
Implicit large eddy simulations of two-dimensional Rayleigh-Taylor instability at different density ratios (i.e., Atwood number A=0.05, 0.5, and 0.9) are conducted to investigate the late-time dynamics of bubbles. To produce a flow field full of bounded, semibounded, and chaotic bubbles, three probl...
[Phys. Rev. E 97, 033108] Published Thu Mar 22, 2018
Author(s): Taketo Ariki, Kyo Yoshida, Keigo Matsuda, and Katsunori Yoshimatsu
Heavy particle clustering in turbulence is discussed from both phenomenological and analytical points of view, where the −4/3 power law of the pair-correlation function is obtained in the inertial range. A closure theory explains the power law in terms of the balance between turbulence mixing and pr...
[Phys. Rev. E 97, 033109] Published Thu Mar 22, 2018
Author(s): Jarrod Schiffbauer and Tengfei Luo
We investigate the nature of vapor bubble formation near a nanoscale-curved convex liquid-solid interface using two models: an equilibrium Gibbs model for homogenous nucleation, and a nonequilibrium dynamic van der Waals–diffuse-interface model for phase change in an initially cool liquid. Vapor bub...
[Phys. Rev. E 97, 033106] Published Mon Mar 19, 2018
Enhancement of the water flow velocity through carbon nanotubes resulting from the radius dependence of the friction due to electron excitations
Author(s): J. B. Sokoloff
Secchi et al. [Nature (London) 537, 210 (2016)] observed a large enhancement of the permeability and slip length in carbon nanotubes when the tube radius is of the order of 15 nm, but not in boron nitride nanotubes. It will be pointed out that none of the parameters that appear in the usual molecula...
[Phys. Rev. E 97, 033107] Published Mon Mar 19, 2018