Goal-Oriented Weighting of Reynolds-Stress Data for Learning Turbulence Models in Complex FlowsData-driven turbulence models for the Reynolds-averaged Navier-Stokes (RANS) equations offer a promising route to improving predictions of complex flows. Such models, specifically the turbulence…Zhuolin Zhao, Haochen Wang, Youngwoo Kim et al.·Sep 25, 2026SaveLearn
Particle Trajectories Beneath Fully Nonlinear Waves Generated by Horizontal Seabed MotionWe investigate fully nonlinear water waves and fluid-particle dynamics generated by the horizontal motion of a seabed obstacle with prescribed time-dependent velocity. The governing equations are the…João Vitor P. Poletto, David Andrade, Marcelo V. Flamarion et al.·Sep 25, 2026SaveLearn
Exact Periodic Solutions of the Forced Incompressible Navier-Stokes Equations in Arbitrary DimensionsExact periodic solutions of the unforced incompressible Navier-Stokes equations require the convective field to be a pure gradient, absorbed into the pressure; for the cyclic trigonometric families…R. K. Michael Thambynayagam·Sep 24, 2026SaveLearn
CraftSPH: A high-accuracy and composable differentiable SPH solver implemented in PyTorchSmoothed Particle Hydrodynamics (SPH) is well suited to a range of problems, particularly those involving large deformations in fluid dynamics. In recent years, in addition to the advancement of SPH…Gen Matono, Shujiro Fujioka, Mayuko Nishio·Sep 24, 2026SaveLearn
Dual Laser and Shadow Particle Image Velocimetry for Multiscale Fluid-Structure InteractionsExperimental Fluid-Structure Interaction (FSI) often involves phenomena that occur simultaneously across vastly different spatial and temporal scales. For example, the separation bubble behind a…Adrian Herrera-Amaya, Monica M. Wilhelmus·Sep 24, 2026SaveLearn
Comment on "Note on the start-up of Couette flow for viscoelastic fluids" [Phys. Fluids 35, 113108 (2023)]I show that the initial conditions imposed by Balan [Phys. Fluids 35, 113108 (2023)] are incompatible with a nonzero retardation time, so that the problem solved is not impulsive start-up, but, as I…Ivan C. Christov·Sep 24, 2026SaveLearn
Magneto-coalescence phenomena in colliding ferrofluid dropletsWe explore the collision hydrodynamics of a ferrofluid droplet falling freely onto a sessile droplet of the same liquid, in the presence of a horizontal magnetic field; a configuration that couples…Neeladri Sekhar Bera, Abhishek Kumar Jaiswal, Devranjan Samanta et al.·Sep 24, 2026SaveLearn
Thermal behaviour of settling heavy inertial particles in turbulent natural convectionWe investigate the dynamical and thermal behaviour of settling heavy inertial particles in bulk turbulent thermal convection. Direct numerical simulations are performed in a homogeneous…Hamid Reza Zandi Pour, Guido Boffetta, Stefano Musacchio et al.·Sep 24, 2026SaveLearn
Effect of fuel stratification length scale on thermodiffusively unstable lean hydrogen flamesLean premixed hydrogen flames are highly susceptible to thermodiffusive instabilities, which generate complex cellular structures and enhance propagation speed. In practical combustors, incomplete…Filippo Fruzza, Sofiane Al Kassar, Rachele Lamioni et al.·Sep 24, 2026SaveLearn
Relative periodic orbits in spatially extended Kolmogorov turbulence: from global to localized recurrenceRecurrent invariant solutions provide a dynamical framework for interpreting turbulence, but their computation becomes increasingly difficult in spatially extended flows, where close whole-domain…Yaning Liu, C. Ricardo Constante-Amores·Sep 24, 2026SaveLearn
Global modal/non-modal analysis of high-enthalpy Martian entry vehiclesWe analyze laminar-to-turbulent transition over a blunt capsule representative of Martian entry at Mach 26 using global modal and transient-growth analyses about a thermochemical base flow…Adrián Antón-Álvarez, Adrián Lozano-Durán·Sep 24, 2026SaveLearn
Wave-driven propulsion of a flexible raftInertial propulsion in fluids generally arises from an unbalanced flux of momentum. For the case of wave-driven propulsion, momentum is transported away from an oscillating raft in the form of…Elvis A. Agüero, Daniel M. Harris·Sep 24, 2026SaveLearn
Consistent lattice Boltzmann model with body force and heat source for compressible flows of generic fluidsThis work presents a consistent formulation of body-force and heat-source terms within a double-distribution-function lattice Boltzmann framework for simulating compressible flows of generic fluids.…S. Chatterjee, R. M. Strässle, S. A. Hosseini et al.·Sep 23, 2026SaveLearn
General model for shear stress and surface pressure distributions for flow over spheresA general physics-based model for the distribution of shear stress and surface pressure is developed for laminar flow over spheres. Although integral coefficients have been studied extensively for…Bryce Daniels, Thomas Schwartzentruber·Sep 23, 2026SaveLearn
Dynamical and statistical properties of large scales in turbulenceWe present a review of results concerning the properties of scales larger than the forcing scale in turbulent flows. In three-dimensional turbulence, when the power driving the flow is injected at a…A. Alexakis, M. E. Brachet, S. Fauve et al.·Sep 23, 2026SaveLearn
Effects of Corner Radius and Knudsen Number on Rarefied Gas Flow in a Lid-Driven CavityFinite corner curvature is commonly omitted when rarefied cavity flows are represented using idealised geometries. This study examines how downstream corner rounding affects lid-driven cavity flow…Peiliang Yan, Chuang Wen·Sep 23, 2026SaveLearn
Mechanisms of transonic buffet over supercritical airfoils revealed by direct numerical simulationsWe use direct numerical simulations to study the turbulent transonic flow over a supercritical airfoil, spanning the transition from stable conditions to fully developed buffet at chord-based…Giulio Soldati, Hang Song, Sergio Pirozzoli et al.·Sep 23, 2026SaveLearn
Concentration of Stationary Measures onto Large Scales in the Fast-Advection Limit of the Stochastically Forced Two-Dimensional Navier-Stokes EquationsWe investigate the fast-advection limit ( 0) of the stochastically forced two-dimensional incompressible Navier-Stokes equations on the torus. Numerical simulations are performed at…Tobias Rohner·Sep 23, 2026SaveLearn
Transition from a weak-elastic to an elastic-activated regime in two-dimensional polymeric turbulenceWe conduct direct numerical simulations to investigate the effects of dilute polymers on flow structure, statistical properties and energy transfer in 2D turbulence. As the Weissenberg number (Wi)…Haoyu Wang, Hangyu Zhu, Xiaoqiu He et al.·Sep 23, 2026SaveLearn
Measurement of Nanoscale Surface Disturbances on Liquid Jets Using the Mie Scattering MethodThe Plateau--Rayleigh instability of liquid jets governs a wide range of natural and industrial processes. While the classical linear stability theory accurately predicts disturbance growth rates and…Dingwei Zhang, Qiyou Liu, Hu Sun et al.·Sep 23, 2026SaveLearn
Blade secondary vortex interaction noise in hovering rotorsRecent indoor experiments on small-scale hovering rotors have reported mid-frequency quasi-tonal peaks of uncertain origin in the residual (aperiodic) far-field sound spectrum, even without wake…Jordon Won, Seongkyu Lee·Sep 22, 2026SaveLearn
A catalog of exact steady states in Kolmogorov flowTwo-dimensional Kolmogorov flow is a common proving ground for the dynamical systems picture of turbulence. Hundreds of unstable periodic orbits have been found for this system across many Reynolds…Matthew Golden·Sep 22, 2026SaveLearn
Experimental observations of sub-threshold triadic resonances in internal wave beamsThis work examines sub-threshold triadic responses to a vortex-ring-induced perturbation of an internal gravity-wave field, using sparsity-promoting dynamic mode decomposition (spDMD) to diagnose…Laura J. Irvine, Katherine M. Grayson, Andrew G. W. Lawrie et al.·Sep 22, 2026SaveLearn
Wind farm global blockage as an adverse pressure gradient problem: turbulence amplification and spectral modification in the induction region of a model wind farmThe induction region of a model wind farm is investigated experimentally as an adverse pressure gradient (APG) turbulent boundary layer problem, using hot-wire anemometry. An array of porous discs,…Adrian T. McGlade, Oliver R. H. Buxton·Sep 22, 2026SaveLearn
A thermodynamically consistent and conservative phase-field model for surfactant contact line dynamics with solid adsorptionSurfactant adsorption at solid-fluid interfaces strongly influences contact line dynamics, yet most surfactant-laden phase-field models neglect solid adsorption and rely on Cahn-Hilliard-type…Jiangxu Huang, Zhenhua Chai, Xi Liu et al.·Sep 22, 2026SaveLearn