Physical Review E

Author(s): Anunay Prasanna, Guillaume T. Bokman, Samuele Fiorini, Armand Sieber, Bratislav Lukić, Daniel Foster, and Outi Supponen

Perfluorohexane is a biocompatible material that serves as a liquid core for acoustically responsive agents in biomedical applications. Despite its relatively widespread usage, there is a lack of experimental data determining its thermodynamic properties. This challenges numerical simulations to pre…

[Phys. Rev. E 112, 065101] Published Mon Dec 01, 2025

Author(s): Írio M. Coutinho and José A. Miranda

In standard rotating Hele-Shaw cell flows, an initially circular fluid drop, surrounded by an outer fluid of negligible density and viscosity, is centered at the rotation axis of the cell. The interplay of centrifugal and surface tension forces leads to the emergence of intricate interfacial pattern…

[Phys. Rev. E 112, 065102] Published Mon Dec 01, 2025

Author(s): Louis-S. Bouchard and Seulgi Moon

Debris flows often exhibit coherent wave structures—shocklike roll waves on steeper slopes and weaker, more sinusoidal dispersive pulses on gentler slopes. Coarse-rich heads raise basal resistance, whereas fines-rich tails lower it; in gentle reaches, small-amplitude pulses can locally transport mom…

[Phys. Rev. E 112, 055112] Published Mon Nov 24, 2025

Author(s): Francisca Guzmán-Lastra and Enkeleida Lushi

Microswimmer locomotion in heterogeneous media is increasingly relevant in biological physics due to the prevalence of microorganisms in complex environments. A model for such porous media is the Brinkman fluid, which accounts for a sparse matrix of stationary obstacles via a linear resistance term …

[Phys. Rev. E 112, 055110] Published Tue Nov 18, 2025

Author(s): Daniel M. C. Hallack, Diogo Bolster, Jeffrey D. Hyman, Matthew R. Sweeney, and Hari S. Viswanathan

We study effective mixing behavior of solutes in steady flows through three-dimensional random fracture networks and find that mixing in these systems is characterized by phenomena distinct from continuous porous media. Network-scale heterogeneity leads to the complex spatio-temporal organization of…

[Phys. Rev. E 112, 055111] Published Tue Nov 18, 2025

Author(s): Timo Schorlepp, Katharina Kormann, Jeremiah Lübke, Tobias Schäfer, and Rainer Grauer

Sampling synthetic turbulent fields as a computationally tractable surrogate for direct numerical simulations (DNS) is an important practical problem in various applications, and allows us to test our physical understanding of the main features of real turbulent flows. Reproducing higher-order Euler…

[Phys. Rev. E 112, 055108] Published Mon Nov 17, 2025

Author(s): Elhoussine Azroul and Ghizlane Diki

This study introduces an approach to extend the Keller and Skalak (KS) theory by integrating the modified Riemann-Liouville fractional derivative. Our focus is on investigating the transition of red blood cells from flipping to stationary motion within shear flows. Expanding upon the predictions out…

[Phys. Rev. E 112, 055109] Published Mon Nov 17, 2025

Author(s): Junchao Sun, Xiaoyan Tang, and Yong Chen

We derive a nonlocal Ostrovsky equation to describe two internal waves generated at distinct locations and times, together with their correlations and interactions. When the initial conditions are P̂T̂ symmetry invariant, the internal waves can either exhibit cnoidal wave structures that are largely…

[Phys. Rev. E 112, 055104] Published Wed Nov 12, 2025

Author(s): Andrew Cleary and Jacob Page

Deep autoencoder neural networks can generate highly accurate, low-order representations of turbulence. We design a family of autoencoders which are a combination of a “dense-block” encoder-decoder structure [Page et al., J. Fluid Mech. 991, A10 (2024)], an "implicit rank minimization" series of lin…

[Phys. Rev. E 112, 055105] Published Wed Nov 12, 2025

Author(s): G. Mederos, J. Arcos, O. Bautista, and F. Méndez

We investigate the Taylor-Aris dispersion resulting from oscillatory squeeze flow (OSF) of an Oldroyd-B viscoelastic fluid in the gap between two hydrophobic disks. The slippage between the fluid and the surfaces of both disks is modeled using a dynamic slip boundary condition, which accounts for pe…

[Phys. Rev. E 112, 055106] Published Wed Nov 12, 2025

Author(s): Mogens T. Levinsen

Walkers are oil drops surfing on a vibrated oil surface and driven by their self-generated capillary waves. Since some of the first measurements on walkers seemingly showed quantum-like behavior, walkers have been considered a model system for a hydrodynamic pilot-wave system. An early experiment sh…

[Phys. Rev. E 112, 055107] Published Wed Nov 12, 2025

Author(s): Fang Xiong, Lei Wang, and Xinyue Liu

The Cahn-Hilliard equation, as a classical diffusion-interface method of phase field, has been extensively employed for simulating two-phase fluid dynamics. However, it suffers from a key challenge in the simulation process, specifically the volume conservation of each phase cannot be guaranteed. To…

[Phys. Rev. E 112, 055103] Published Thu Nov 06, 2025

Author(s): Chaojie Mo, Caoxing Mo, Qingfei Fu, Lijun Yang, and Longfei Chen

Hydrodynamic interactions play a crucial role in the formation of flagellated microswimmer clusters, yet they are still not clearly understood. In this article we try to elucidate the influence mechanism of the flagellum elasticity on the clustering-separation process of two flagellated microswimmer…

[Phys. Rev. E 112, 055101] Published Tue Nov 04, 2025

Author(s): Robert Kuszelewicz

We develop a comprehensive three-dimensional theory to describe the hydrodynamics of magnetic nanoparticles exposed to an external time-dependent magnetic field. This theory extends the mobility matrix formalism developed by J. Happel, to (quasi-) magnetostatic interactions and incorporates Brownian…

[Phys. Rev. E 112, 055102] Published Tue Nov 04, 2025

Author(s): Mingming Gu, Zilong Deng, and Yongping Chen

This work proposes a model to simulate transient flow of a gas mixture at arbitrary rarefaction parameters and molar fractions through a long capillary. The transient model is based on the linear relationship between the thermodynamic fluxes (mass flow rate, diffusion flux, etc.) and the thermodynam…

[Phys. Rev. E 112, 045110] Published Fri Oct 31, 2025

Author(s): Vadim Travnikov and Christoph Egbers

The study of large-scale convective flows within a spherical gap has been the focus of numerous theoretical and numerical investigations because of its relevance to geophysical applications. This is particularly true in scenarios where the inner surface is warmer than the outer surface, and the flui…

[Phys. Rev. E 112, 045109] Published Wed Oct 22, 2025

Author(s): Tomas Fullana, Stéphane Zaleski, and Gustav Amberg

Dynamic wetting poses a well-known challenge in classical sharp-interface formulation as the no-slip wall condition leads to a contact line singularity that is typically regularized with a Navier boundary condition, often requiring empirical fitting for the slip length. On the other hand, this parad…

[Phys. Rev. E 112, 045108] Published Tue Oct 21, 2025

Author(s): Alexander S. Balankin

Fractal features of permeable (e.g., porous or/and fractured) medium strongly affect the imbibition behavior in the Lucas-Washburn-like scaling regime. Mapping a spontaneous imbibition in a fractally permeable medium onto a fractal continuum flow allows us to establish the relations between the imbi…

[Phys. Rev. E 112, 045107] Published Mon Oct 20, 2025

Author(s): W. G. Rodrigues, Jr. and V. B. Henriques

Nanoporous capsules have been the subject of intense investigation in the field of drug delivery. One of the essential properties of such particles, which requires characterization, is their structure. Many experimental techniques have been used for this purpose, such as wide-angle neutron or x-ray …

[Phys. Rev. E 112, 045106] Published Fri Oct 17, 2025

Author(s): Rizwan Ullah, Andres Barrio-Zhang, and Arezoo M. Ardekani

Acoustic pressure nodes in acoustophoretic devices are crucial for applications in tissue engineering, cell analysis, and particle trapping. Typically, a single primary node forms at the half-wavelength resonance condition, with its shape and position constrained by the channel dimensions. The gener…

[Phys. Rev. E 112, 045105] Published Thu Oct 16, 2025