Onsager-variational-principle-based Lattice Boltzmann Model For Three-phase Dielectric Fluid FlowsMultiphase electrohydrodynamic (EHD) flows play a crucial role in various engineering applications. However, existing numerical studies on three-phase electrohydrodynamic systems predominantly rely…Xinyue Liu, Xu Qian, Fang Xiong et al.·Aug 6, 2026SaveLearn
Area and Perimeter Rules of Velocity Circulation in Two-Dimensional Turbulence with Large-scale Absolute EquilibriumWe demonstrate that the area rule of velocity circulation -- traditionally associated with the turbulent inertial range but shown not to be exact -- is strictly satisfied in the large-scale absolute…Zi-Ang Zhang, Jin-Han Xie·Aug 6, 2026SaveLearn
Effect of Discharge on the Nonlinear Bar Growth: A Flume ExperimentAlternate bars are ubiquitous bedforms in alluvial rivers, and excessive bar-height growth can increase flood risk and disrupt ecosystems. Predicting bar-height variability requires quantifying the…Shohei Seki, Daichi Moteki, Hiroyasu Yasuda·Aug 6, 2026SaveLearn
Data-driven impeller model for efficient large eddy simulations of metastable von Kármán flowsThe von Kármán turbulent swirling flow exhibits intriguing large-scale metastable dynamics, including low-frequency state switching. The study of state switching demands long-duration high-fidelity…Quentin Malé, Lucas Amoudruz, Daniel Bulgarini et al.·Aug 6, 2026SaveLearn
Statistical State Dynamics Eigenmodes and Equilibria support Couette TurbulenceWide-channel Couette (WCC) turbulence consists primarily of quasi-steady roll-streak structures (RSS) maintained by a self-sustaining process (SSP), yet the Navier-Stokes equations in velocity…Brian F. Farrell, Petros J. Ioannou·Aug 6, 2026SaveLearn
Synchronized molecular dynamics method for thin-layer flows of complex fluidsWe propose a multiscale computational method for thin-layer flows of complex fluids, termed the synchronized molecular dynamics (SMD) method, which directly couples local molecular dynamics (MD)…Shugo Yasuda, Kotaro Oda, Fumito Muragaki et al.·Aug 6, 2026SaveLearn
Mapping surface height dynamics to subsurface flow physics in free-surface turbulent flow using a shallow recurrent decoderNear-surface turbulent flows beneath a free surface are reconstructed from sparse measurements of the surface height variation, by a neural network algorithm known as the SHallow REcurrent Decoder…Kristoffer S. Moen, Jørgen R. Aarnes, Simen Å. Ellingsen et al.·Aug 6, 2026SaveLearn
Projection-Based Solver for Viscoelastic Stokes Flow using FFTsUnderstanding the flow of complex media is relevant for a wide range of research fields and industrial applications. Several numerical approaches exist by which approximate solutions can be…Georg Rempfer, Mae Nesenberend, Chengkai Zhu et al.·Aug 6, 2026SaveLearn
Steady Rayleigh--Bénard convection: strongly nonlinear high-wavenumber rollsIn Rayleigh--Bénard convection, two-dimensional steady rolls bifurcate supercritically at a Rayleigh number Ra that depends on their horizontal-to-vertical aspect ratio Γ, and they exist at all…Baole Wen, Alexander Takla, David Goluskin et al.·Aug 6, 2026SaveLearn
Generalised Perturbed Convective Wave TheoryThe theory of the perturbed convective wave equation for compressible flows (cPCWE) is generalised to spatially varying mean-density fields. The resulting equation is an exact scalar reformulation of…Stefan Schoder, Eman Bagheri, Hugo Vincent et al.·Aug 5, 2026SaveLearn
Confinement-induced evolution and breakup of viscoelastic filaments in microfluidic coflowsViscoelastic filament thinning is classically described by elastocapillary dynamics in extensional flows, yet in confined microchannels the combined effects of wall-induced shear, elasticity, and…U. K. Kar, T. Sujith, D. Ghosh et al.·Aug 5, 2026SaveLearn
The prediction of extreme uncertainty-production events in three-dimensional Navier-Stokes turbulenceWe investigate the exponential growth of uncertainty energy in 3D Navier-Stokes turbulence, emphasising the intermittent and highly localized amplification/production of uncertainty, a critical…Jin Ge, Joran Rolland, John Christos Vassilicos·Aug 5, 2026SaveLearn
Extreme flows: where physics meets mathematically rigorous boundsExtreme flows realize the largest possible growth, either instantaneously or in finite time, of certain quantities of interest which is achieved by a suitable choice of the initial condition or the…Bartosz Protas·Aug 5, 2026SaveLearn
Laminar gaps mirror turbulent puffs in pipe flowPipe flow at intermediate Reynolds numbers, between the laminar and fully turbulent regimes, takes the form of several spatially and temporally intermittent phases in which turbulent and laminar…Shai Kapon, Tobias Grafke, Anna Frishman·Aug 5, 2026SaveLearn
A hybrid proper orthogonal decomposition and diffusion framework for reduced-order forecasting of turbulent flow dynamicsForecasting turbulent flow dynamics requires a balance between predictive fidelity and computational efficiency. Diffusion-based generative models can represent complex spatiotemporal dynamics, but…Rodrigo Abadia-Heredia, Xiangrui Zou, Manuel Lopez-Martin et al.·Aug 5, 2026SaveLearn
Free-surface curvature and its relation to subsurface turbulenceThe free surface atop a turbulent liquid flow is deformed by the underlying fluid motion, with the turbulence imprinting its geometry on the surface. Here we develop a theoretical framework to model…Daniel J. Ruth, Filippo Coletti·Aug 5, 2026SaveLearn
Erodible bed turbulence modulation driven by transition between longitudinal and transverse bedforms at varying Shields numbersThe mechanism of turbulence modulation in particle-laden flow over erodible beds remains an open question. Using particle-resolved direct numerical simulations, this study realises a…Yinghaonan Lei, Ping Wang, Xiaojing Zheng·Aug 5, 2026SaveLearn
Higher-Order Extensions of Weakly Viscous Dysthe Theory and a Phase-Lag Model for Nonlinear Mean-Flow DampingWe extend the Carter-Govan multiple-scales analysis of weakly viscous, narrowband deep-water wave packets beyond Dysthe order within the potential-flow reduction of Dias, Dyachenko, and Zakharov…C. M. Schober, A. Islas·Aug 5, 2026SaveLearn
Interfacial dynamics and energy cascade in immiscible Rayleigh-Taylor turbulenceWe investigate interfacial dynamics and multiscale energy transfer in immiscible Rayleigh-Taylor turbulence using numerical simulations with varying surface tension coefficients σ. Capillarity is…Dongxiao Zhao, Xiaoxue Huang, Gaojin Li·Aug 5, 2026SaveLearn
Reliable and efficient steady CFD from surrogate predictions through Newton-Krylov correctionNeural surrogates offer a promising route to accelerating computationally expensive simulations governed by partial differential equations across science and industry. Their practical deployment,…Mingcheng Lei, Weishao Tang, Yufei Zhang et al.·Aug 5, 2026SaveLearn
Expansion of a hole in a viscoelastic liquid sheetExperiments on highly viscous polymeric films show that punctured holes expand exponentially in time, without sustained accumulation of liquid near the rim. This response departs from the…Tachin Ruangkriengsin, Rodolfo Brandão, Howard A. Stone·Aug 5, 2026SaveLearn
Beyond the Mean-flow: A Spectral-Dynamic Approach to Unraveling the Physics of Droplet Capture in Fog Harvesting MeshesFog harvesting efficiency with mesh collectors is governed by complex interactions between droplet inertia and geometry-induced flow structures. Although previous studies have primarily relied on…Pradyumna Das, Ranjan Ganguly, Ashoke De·Aug 5, 2026SaveLearn
Guarantees by Construction for Learned Finite Volume Schemes on Steady Supersonic FlowA second order finite volume scheme rests on two local quantities: a gradient reconstructed in each cell, and a limiter which scales it down where the reconstruction would overshoot. Both are set by…Denis Gueyffier·Aug 5, 2026SaveLearn
Shape-dependence of electrophoretic mobility: an AI-assisted derivationThe electrophoretic mobility of a spherical particle is well understood, yet how particle shape modifies this mobility at arbitrary Debye length remains an open question. Here, we compute the…Arkava Ganguly, Ankur Gupta·Aug 5, 2026SaveLearn
A simplification of the vorticity equation and an extension of the vorticity persistence theorem to three dimensionsIt has been known for more than a century that in two-dimensional (planar) Euler flow, vorticity is conserved along streamlines. In three-dimensions, however, no such result has been established, and…T. S. Morton·Aug 4, 2026SaveLearn