Physical Review E
Steady thermocapillary migration of a droplet in a uniform temperature gradient combined with a radiation energy source at large Marangoni numbers
Author(s): Zuo-Bing Wu
Steady thermocapillary droplet migration in a uniform temperature gradient combined with a radiation energy source at large Reynolds and Marangoni numbers is studied. To reach a terminal quasisteady process, the magnitude of the radiation energy source is required to preserve the conservative integr...
[Phys. Rev. E 98, 013110] Published Tue Jul 31, 2018
Magnetohydrodynamics- and magnetosolutal-transport-mediated evaporation dynamics in paramagnetic pendant droplets under field stimulus
Author(s): Vivek Jaiswal, Raghvendra Kumar Dwivedi, A. R. Harikrishnan, and Purbarun Dhar
Evaporation kinetics of pendant droplets is an area of immense importance in several applications, in addition to possessing rich fluid dynamics and thermal transport physics. This article experimentally and analytically sheds insight into the augmented evaporation dynamics of paramagnetic pendant d...
[Phys. Rev. E 98, 013109] Published Mon Jul 30, 2018
Author(s): G. Iacobello, S. Scarsoglio, J. G. M. Kuerten, and L. Ridolfi
A network-based analysis of a turbulent channel flow numerically solved at Reτ=180 is proposed as an innovative perspective for the spatial characterization of the flow field. Two spatial networks corresponding to the streamwise and wall-normal velocity components are built, where nodes represent po...
[Phys. Rev. E 98, 013107] Published Fri Jul 27, 2018
Cavitation in a liquid-filled cavity surrounded by an elastic medium: Intercoupling of cavitation events in neighboring cavities
Author(s): Alexander A. Doinikov, Benjamin Dollet, and Philippe Marmottant
The subject of the present theoretical study is the dynamics of a cavitation bubble in a spherical liquid-filled cavity surrounded by an infinite elastic solid. Two objectives are pursued. The first is to derive equations for the velocity and pressure fields throughout the liquid filling the cavity ...
[Phys. Rev. E 98, 013108] Published Fri Jul 27, 2018
Author(s): A. Khlifi, A. Salhi, S. Nasraoui, F. Godeferd, and C. Cambon
We study precessing turbulence, which appears in several geophysical and astrophysical systems, by direct numerical simulations of homogeneous turbulence where precessional instability is triggered due to the imposed background flow. We show that the time development of kinetic energy K occurs in tw...
[Phys. Rev. E 98, 011102(R)] Published Wed Jul 25, 2018
Author(s): Sanjeeva Balasuriya and Georg A. Gottwald
We consider the situation of a large-scale stationary flow subjected to small-scale fluctuations. Assuming that the stable and unstable manifolds of the large-scale flow are known, we quantify the mean behavior and stochastic fluctuations of particles close to the unperturbed stable and unstable man...
[Phys. Rev. E 98, 013106] Published Tue Jul 24, 2018
Author(s): A. L. Velikovich and J. L. Giuliani
The classic self-similar solutions of the nonstationary compressible Euler equations obtained for a blast-wave propagation (Sedov, Taylor, and von Neumann), a shock-wave implosion (Guderley, Landau, and Stanyukovich), or an impulsive loading of a planar target (von Hoerner, Häfele, and Zel’dovich) h...
[Phys. Rev. E 98, 013105] Published Thu Jul 19, 2018
Control of Rayleigh-Taylor instability onset time and convective velocity by differential diffusion effects
Author(s): S. S. Gopalakrishnan, J. Carballido-Landeira, B. Knaepen, and A. De Wit
Fingering instabilities of a miscible interface between two fluids in a gravitational field can develop due to adverse density gradients as in the well-known Rayleigh-Taylor (RT) and double-diffusive (DD) instabilities. In the absence of differential diffusion, the mixing rate and the onset time of ...
[Phys. Rev. E 98, 011101(R)] Published Tue Jul 17, 2018
Author(s): Soroush Aramideh, Pavlos P. Vlachos, and Arezoo M. Ardekani
Flow in porous media is known to be largely affected by pore morphology. In this work, we investigate the effects of pore geometry on the transport and spatial correlations of flow through porous media in two distinct pore structures arising from three-dimensional assemblies of overlapping and nonov...
[Phys. Rev. E 98, 013104] Published Fri Jul 13, 2018
Author(s): Arjang Shahriari, Preston S. Wilson, and Vaibhav Bahadur
At high temperatures, a droplet can rest on a cushion of its vapor (the Leidenfrost effect). Application of an electric field across the vapor gap fundamentally eliminates the Leidenfrost state by attracting liquid towards the surface. This study uses acoustic signature tracking to study electrostat...
[Phys. Rev. E 98, 013103] Published Thu Jul 12, 2018
Author(s): Hussein N. Dalgamoni and Xin Yong
Droplet-solid interaction is a ubiquitous fluid phenomenon that underpins a wide range of applications. To further the understanding of this important problem, we use an axisymmetric lattice Boltzmann method (LBM) to model the droplet impact on a solid surface with different wettability. The method ...
[Phys. Rev. E 98, 013102] Published Mon Jul 09, 2018
Controlling wetting with electrolytic solutions: Phase-field simulations of a droplet-conductor system
Author(s): Gaute Linga, Asger Bolet, and Joachim Mathiesen
The wetting properties of immiscible two-phase systems are crucial in applications ranging from laboratory-on-a-chip devices to field-scale oil recovery. It has long been known that effective wetting properties can be altered by the application of an electric field; a phenomenon coined as electrowet...
[Phys. Rev. E 98, 013101] Published Thu Jul 05, 2018