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 7 hours ago

Comparative study of the dynamics of laser and acoustically generated bubbles in viscoelastic media

Wed, 04/10/2019 - 11:00

Author(s): Chad T. Wilson, Timothy L. Hall, Eric Johnsen, Lauren Mancia, Mauro Rodriguez, Jonathan E. Lundt, Tim Colonius, David L. Henann, Christian Franck, Zhen Xu, and Jonathan R. Sukovich

Experimental observations of the growth and collapse of acoustically and laser-nucleated single bubbles in water and agarose gels of varying stiffness are presented. The maximum radii of generated bubbles decreased as the stiffness of the media increased for both nucleation modalities, but the maxim...

[Phys. Rev. E 99, 043103] Published Wed Apr 10, 2019

Uplift of an elastic membrane by a viscous flow

Thu, 04/04/2019 - 11:00

Author(s): Michael Berhanu, Adrien Guérin, Sylvain Courrech du Pont, Fiona Raoult, Rémi Perrier, and Chloé Michaut

Pumping a viscous fluid underneath an elastic sheet will cause the sheet to bulge upward. The liquid pressure is balanced by the sheet’s elasticity as well as gravity. The authors’ experiment shows reasonable agreement with two different theories, and may provide a model for the formation of magma intrusions between layers of rock.

[Phys. Rev. E 99, 043102] Published Thu Apr 04, 2019

Thermocapillary thin-film flows on a compliant substrate

Tue, 04/02/2019 - 11:00

Author(s): Youchuang Chao and Zijing Ding

We study the dynamics of a thin liquid film on a compliant substrate in the presence of thermocapillary effect. A set of long-wave equations are derived to investigate the effects of fluid gravity (G), fluid inertia (Re), and Marangoni stresses (Ma) on the dynamics of the liquid film and the complia...

[Phys. Rev. E 99, 043101] Published Tue Apr 02, 2019

Rupture time of droplets impacted by a burst of picosecond laser pulses

Fri, 03/29/2019 - 10:00

Author(s): Duane Hudgins and Reza S. Abhari

Liquid Sn droplets were irradiated with shaped bursts of picosecond laser pulses. The shapes of the deforming droplets following the impact of the recoil pressure induced by these bursts were imaged using a high-speed shadowgraph system. The rupture time t̃b of the droplet expanding as a thin fluid ...

[Phys. Rev. E 99, 031102(R)] Published Fri Mar 29, 2019

Turbulent convection and large scale circulation in a cube with rough horizontal surfaces

Thu, 03/28/2019 - 10:00

Author(s): N. Foroozani, J. J. Niemela, V. Armenio, and K. R. Sreenivasan

Large-eddy simulations of thermal convection are presented and discussed for a cube with rough horizontal surfaces. Two types of roughness are considered: uniformly placed pyramids, and grooves aligned parallel to one set of sidewalls. The Rayleigh number is 108, the Prandtl number 0.7, and the aspe...

[Phys. Rev. E 99, 033116] Published Thu Mar 28, 2019

Analog cosmology with two-fluid systems in a strong gradient magnetic field

Wed, 03/27/2019 - 10:00

Author(s): Zack Fifer, Theo Torres, Sebastian Erne, Anastasios Avgoustidis, Richard J. A. Hill, and Silke Weinfurtner

Inflation refers to the exponential expansion of the early universe that can explain many of the properties we see today. The authors of this work propose an experimental analog in which the interface between two immiscible, magnetic fluids shows inflationary behavior. The work shows that waves created at the interface could reproduce known solutions of inflationary models, and suggests a variety of other cosmological scenarios that could be simulated.

[Phys. Rev. E 99, 031101(R)] Published Wed Mar 27, 2019

Effect of pressure on joint cascade of kinetic energy and helicity in compressible helical turbulence

Wed, 03/27/2019 - 10:00

Author(s): Zheng Yan, Xinliang Li, Jianchun Wang, and Changping Yu

Direct numerical simulations of three-dimensional compressible helical turbulence are carried out at a grid resolution of 10243 to investigate the effect of pressure, which is important for the joint cascade of kinetic energy and helicity in compressible helical turbulence. The principal finding is ...

[Phys. Rev. E 99, 033114] Published Wed Mar 27, 2019

Localized Faraday patterns under heterogeneous parametric excitation

Wed, 03/27/2019 - 10:00

Author(s): Héctor Urra, Juan F. Marín, Milena Páez-Silva, Majid Taki, Saliya Coulibaly, Leonardo Gordillo, and Mónica A. García-Ñustes

Faraday waves are a classic example of a system in which an extended pattern emerges under spatially uniform forcing. Motivated by systems in which uniform excitation is not plausible, we study both experimentally and theoretically the effect of heterogeneous forcing on Faraday waves. Our experiment...

[Phys. Rev. E 99, 033115] Published Wed Mar 27, 2019