Particle dynamics in a microfluidic T-junction vortex flow: the role of history forceThe motion of inertial particles suspended in a carrier fluid, together with the dynamics of the underlying vortical structures, is investigated in a square microfluidic T-junction. The coherent…Matteo Chiatto, Luigi de Luca, Howard A. Stone et al.·Oct 9, 2026SaveLearn
Predicting the Final Stationary State of Sheared 2D Euler FluidsThe Kelvin-Helmholtz (KH) instability is a fundamental signature of the natural world, manifesting in phenomena ranging from atmospheric clouds to the iconic turbulence of Jupiter's Great Red…Renato Pakter, Yan Levin·Oct 9, 2026SaveLearn
Re-emergence of fingering in solidifying liquid-metal dropsSolidification is expected to suppress fingering by removing mobile liquid. Here we report an unexpected re-emergence of fingering in impacting molten-tin drops: cooling first weakens peripheral…Siyu Zhang, Feng Wang, Yuan Ma et al.·Oct 9, 2026SaveLearn
The binormal flow: a toy model for turbulenceThese notes summarize the content of a one-week course given by Luis Vega on the binormal flow model applied to describe the dynamics of three-dimensional vortex filaments in incompressible fluids…Elena Danesi, Pablo Merino, Luis Vega·Oct 9, 2026SaveLearn
Non intrusive parametric Reduced Order Models based on physics for incompressible flowReduced order modeling provides an efficient alternative to high fidelity simulations for the rapid prediction of fluid flows in many query settings. Among non intrusive approaches, Operator…Cyrille Allery, Claudine Beghein·Oct 9, 2026SaveLearn
Conjugate heat transfer in turbulent pipe flow with azimuthally non-uniform heatingTurbulent conjugate heat transfer (CHT) in pipes with azimuthally non-uniform heating is studied theoretically and numerically with a focus on low-Pr fluids. While the influence of the…Jonathan Neuhauser, Davide Gatti, Bettina Frohnapfel·Oct 8, 2026SaveLearn
Early-time dynamics of the Richtmyer-Meshkov instability at Kelvin-Voigt viscoelastic interfacesThe Richtmyer-Meshkov instability (RMI) is initiated when a shock wave interacts with a perturbed interface between two materials, imparting an initial velocity to the interfacial perturbation. When…Xuning Zhao, Mauro Rodriguez·Oct 8, 2026SaveLearn
Learning minimum-time navigation policies in two-dimensional flows with a genetic algorithmWe study minimum-time navigation between two points in a known two-dimensional fluid flow for a vessel with fixed-magnitude slip velocity and controllable direction. The navigation policy is…Vladimir Parfenyev·Oct 8, 2026SaveLearn
Online Learning of a Spectral Eddy Viscosity Closure for Large Eddy Simulation Using Ensemble Kalman InversionLarge Eddy Simulation (LES) resolves only the large, energy-containing structures of turbulent flows while modeling the effects of unresolved subgrid scales. As a result, the ac- curacy of LES…Katerina Kostova, Yifei Guan·Oct 8, 2026SaveLearn
Extending convolutional neural networks to finite-volume meshes for fine-scale reconstruction of wall-bounded turbulenceStandard convolutional neural networks for turbulence super-resolution are restricted to uniform structured grids, preventing their direct application to the non-uniform and non-orthogonal meshes…Hesam Tofighian, Jordan A. Denev, Nikolai Kornev·Oct 8, 2026SaveLearn
On the relationships between pressure geometrization and vortex identificationThe profound mathematical and conceptual analogy between pressure in fluid mechanics and gravity in general relativity motivates a novel geometric reinterpretation of flows. This article proposes a…Han Tu, Hang Zhao, Qi Gao·Oct 8, 2026SaveLearn
Using analogues to investigate error growth and predictability in turbulenceIn this study, we revisit Lorenz's pioneering concept of analogues to investigate error growth and predictability in fully developed turbulence using experimental data. By applying the method to…Carlos Granero-Belinchon, Mickaël Bourgoin, Bérengère Dubrulle·Oct 8, 2026SaveLearn
Net drag reduction in turbulent pipe flow by airfoil-section grids concentrated near the wallThe frictional drag of turbulent pipe flow is responsible for enormous energy consumption in water and natural gas distribution systems. Flow straighteners can reduce this drag by suppressing…Takuya Masuda·Oct 8, 2026SaveLearn
Inertialess instability of elasto-viscoplastic circular Couette flowAn exploration is presented of two-dimensional, circular Couette flow of an elasto-viscoplastic fluid described by Saramito's (Bingham) constitutive law. Axisymmetrical base states are…James D. Shemilt, Neil J. Balmforth, Duncan R. Hewitt·Oct 8, 2026SaveLearn
Geometric Mechanics of Real-Space Energy Transfer in TurbulenceHow the local energy transfer across scales in turbulence is encoded in the instantaneous deformation of fluid elements remains a fundamental question. We exploit the spherical geometry of the…Weijie Zhang, Hanxun Yao·Oct 8, 2026SaveLearn
A critical-layer instability of structural acoustic wall modes in a two-flexible-plate channel with Poiseuille flow: closed-form low-Mach corrections and parity-protected absorptionA compressible fluid column between two thin elastic plates carrying plane Poiseuille flow supports discrete structural-acoustic wall modes. This paper analyses their coupled dispersion and reports a…Ashray Saxena·Oct 7, 2026SaveLearn
Kinetic Reduction and Hydrodynamics under Time-Dependent Helical SymmetryTranslational and helical symmetries provide idealized descriptions of many flows encountered in nature and engineering. While translationally symmetric flows have been extensively studied within…Qingyun Zeng, Fan Feng·Oct 7, 2026SaveLearn
Phase-controlled lateral forcing of droplets on a vibrating bathWe introduce a method for controlling the lateral motion of droplets bouncing on a vibrated liquid bath by superimposing a small periodic rocking motion onto the conventional vertical forcing. We…Lawrence A. Wilen, Zahra Shamsi, Johnathan Hoggarth et al.·Oct 7, 2026SaveLearn
SAGE-PINN: A Singularity-free Axisymmetric Geometry-Encoded Physics-Informed Neural Network for Axisymmetric Multiphysics Flow in Cylindrical CoordinatesPhysics-informed neural networks (PINNs) provide a mesh-free framework for multiphysics modeling, yet fluid flow in axisymmetric cylindrical coordinates remains largely unexplored because the…Raj Maurya, Joyprakash Akhuli, Doyel Pandey·Oct 7, 2026SaveLearn
Conditional Flow Matching for Generation of 3D Multi-variable Instantaneous Urban Microclimate FieldsRapid and accurate prediction of urban wind and temperature fields is important for urban microclimate design and climate adaptation. Large-eddy simulation (LES) effectively resolves these…Peng Liu, Shaoxiang Qin, Theodore Potsis et al.·Oct 7, 2026SaveLearn
Steady translation of a chemically active viscous drop along a rigid wallChemically active drops release a chemical solute, gradients in whose concentration cause interfacial flows that advect the emitted solute. This non-linear coupling between solute distribution and…Nikhil Desai, Sébastien Michelin·Oct 7, 2026SaveLearn
Extension of a mathematical analogy between vortical flows without surface tension and irrotational capillary flowsIn a recent paper, a mathematical analogy was found between two physically distinct classes of two-dimensional free boundary problems in inviscid fluid mechanics. One class involves free surface…Valentin D. Kunz, Saleh Tanveer, Darren G. Crowdy·Oct 7, 2026SaveLearn
Machine-learning-assisted phase-amplitude reduction for fast synchronization of airfoil wakes with constrained fluctuationsThis study considers rapidly modifying the wake shedding frequency of the flow around an airfoil using sparse sensor information, subject to constraints on the lift coefficient fluctuations. This is…Daiki Beppu, Vedasri Godavarthi, Koichiro Yawata et al.·Oct 7, 2026SaveLearn
Coupled Thermochemical Ablation and Rarefied Particle Erosion during Mars EntryMartian dust particles are a few micrometers in diameter, comparable to the mean free path of the gas in the hypersonic shock layer. Their Knudsen number ranges from approximately 0.2 to 100, placing…Hyeon Woo Nam, Sung Min Jo·Oct 6, 2026SaveLearn
Inferring Multi-Scale Cascade Structure from a Single Lagrangian Trajectory via Hidden Markov SwitchingWe show that a single Lagrangian trajectory encodes not only temporal but also spatial cascade structure--recoverable without access to a spatially resolved Eulerian velocity field. We report a…Ziang Yang, Lei Fang·Oct 6, 2026SaveLearn