Physical Review E

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Recently published articles in Phys. Rev. E in the Table of Content section "Fluid dynamics"
Updated: 2 days 5 hours ago

Marangoni instability in a thin film heated from below: Effect of nonmonotonic dependence of surface tension on temperature

Mon, 04/09/2018 - 11:00

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

Linear Rayleigh-Taylor instability in an accelerated Newtonian fluid with finite width

Mon, 04/09/2018 - 11:00

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

Electrically modulated capillary filling imbibition of nematic liquid crystals

Mon, 04/09/2018 - 11:00

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

Nonlinear oscillatory rarefied gas flow inside a rectangular cavity

Thu, 04/05/2018 - 11:00

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

Transient response of nonideal ion-selective microchannel-nanochannel devices

Thu, 04/05/2018 - 11:00

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

Generation of intermittent gravitocapillary waves via parametric forcing

Tue, 04/03/2018 - 11:00

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

Reduced-order model for inertial locomotion of a slender swimmer

Tue, 04/03/2018 - 11:00

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

Electrohydrodynamic coalescence of droplets using an embedded potential flow model

Fri, 03/30/2018 - 11:00

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