Stable Fine-Time-Step Long-Horizon Turbulence Prediction with a Multi-Stepsize Mixture-of-Experts Neural OperatorNeural operators have been increasingly used as data-driven surrogates for time-marching predictions of turbulent flows. However, long-horizon autoregressive prediction is sensitive to error…Guanyu Pan, Huiyu Yang, Yunpeng Wang et al.·Apr 14, 2026SaveLearn
Shape of an interface hit by an oblique jetWe report on the shape taken by the interface of a liquid bath when hit by a smooth oblique steady jet. When the angle between the jet and the bath decreases below 50, a cavity is formed in…Theophile Gaichies, Anniina Salonen, Arnaud Antkowiak et al.·Apr 14, 2026SaveLearn
Bayesian-Enhanced Galerkin-Based Reduced Order Modelling for Unsteady Compressible FlowsThis work proposes a statistically enhanced framework to address the instability and limited predictive capability of conventional Galerkin-Proper Orthogonal Decomposition (Galerkin-POD) models. The…Bijie Yang, Chengyuan Liu, Lu Tian et al.·Apr 14, 2026SaveLearn
Design Optimization of eVTOL Propellers using a Viscous-Extension Discrete Vortex MethodPotential flow theory remains a cornerstone of unsteady aerodynamics due to its computational efficiency in modeling complex flow phenomena. This study presents a significant advancement by…Rahul Kumar, Ramkumar Pathmanabhan·Apr 14, 2026SaveLearn
Heat transport in magnetohydrodynamic duct flow regimes with conducting and insulating wallsThe flow of a liquid metal (LM) in a rectangular duct segment, subject to a uniform transverse magnetic field and uniform heating at the side walls is explored in an ample parameter space using…Andreu Queralt McBride, Dmitry Krasnov, Yuri Kolesnikov et al.·Apr 14, 2026SaveLearn
Stability of Diffusive Shear LayersAs one of the cornerstones of fluid mechanics, stability analyses provide essential physical insights into the growth of perturbations and eventual transition to turbulence. However, classical…Stefan S. Nixon, Philipp P. Vieweg·Apr 14, 2026SaveLearn
Learning step-level dynamic soaring in shear flowDynamic soaring enables sustained flight by extracting energy from wind shear, yet it is commonly understood as a cycle-level maneuver that assumes stable flow conditions. In realistic unsteady…Lunbing Chen, Jixin Lu, Yufei Yin et al.·Apr 14, 2026SaveLearn
Recurrent bifurcations of stability spectra for steep Stokes waves in a deep fluidWe study the modulational stability problem for the traveling periodic waves (called Stokes waves) in an infinitely deep fluid by using pseudo-differential operators in conformal variables. We derive…Sergey Dyachenko, Robert Marangell, Dmitry E. Pelinovsky·Apr 14, 2026SaveLearn
Effect of gap width on turbulent transition in Taylor-Couette flowSimulations of the transitional flow in Taylor-Couette configuration are carried out to study the effect of the gap width on turbulent transition. The research results show that, under the same…Chang-Quan Zhou, Hua-Shu Dou, Lin Niu et al.·Apr 14, 2026SaveLearn
A Fast Spectral Formulation of the Multiscale Proper Orthogonal DecompositionMultiscale Proper Orthogonal Decomposition (mPOD) decomposes fluid flows into energy-optimal modes within prescribed frequency bands by combining Proper Orthogonal Decomposition with a…Marek Belda, Lorenzo Schena, Romain Poletti et al.·Apr 13, 2026SaveLearn
On the optimal period of spanwise wall forcing for turbulent drag reductionTurbulent channel flow controlled by spanwise wall oscillations is studied using direct numerical simulations to improve how spanwise forcing reduces skin-friction drag. Harmonic wall oscillations…Maurizio Quadrio, Federica Gattere, Marco Castelletti et al.·Apr 13, 2026SaveLearn
Velocity field within a vortex ring with a large elliptical cross sectionThe velocity field within a steady toroidal vortex is found for arbitrary mean core radius and section ellipticity. The problem is solved by transforming to coordinates that define invariant sets.…T. S. Morton·Apr 13, 2026SaveLearn
Bicuspid Valve Closure and Backflow Prevention: Role of Leaflet GeometryBicuspid valves with crescent-shaped leaflets are found in lymphatic vessels and veins, where their primary function is to prevent reflux and ensure unidirectional flow toward the heart. These valves…B. Kaoui, A. Bou Orm, P. Navet et al.·Apr 13, 2026SaveLearn
Data-driven oscillator model for multi-frequency turbulent flowsThe complex dynamics of high-dimensional oscillatory flows can be simplified using phase-reduction analysis, providing a deeper understanding of the flow response to external perturbations. Although…Youngjae Kim, Koichiro Yawata, Hiroya Nakao et al.·Apr 13, 2026SaveLearn
Influence of plume activity on thermal convection in a rectangular cellWe present three-dimensional direct numerical simulations of turbulent Rayleigh-B\'enard convection in a closed rectangular box whose width Ly and length Lx are 0.8 and 2.4 times the height…Ambrish Pandey, Jörg Schumacher, Matteo Parsani et al.·Apr 13, 2026SaveLearn
From Sedimentation to Suspension: Critical Strain as a Predictor of Particle Resuspension ThresholdsViscous resuspension, the process by which sedimented particles are re-entrained into a fluid under flow, is central to numerous natural and industrial systems, including environmental contaminant…Mohammadreza Mahmoudian, Simon A. Rogers, Parisa Mirbod·Apr 13, 2026SaveLearn
Compressible turbulent boundary layers over two-dimensional square-rib roughnessDirect numerical simulations are performed to investigate the combined effects of surface roughness and wall heat transfer on spatially developing compressible turbulent boundary layers at Ma=2.5.…Youtian Su, Wei-Xi Huang, Chunxiao Xu·Apr 13, 2026SaveLearn
Generalised least squares approach for estimation of the log-law parameters of turbulent boundary layersUncertainty in estimating the log-law parameters is arguably the greatest obstacle to establishing definitive conclusions regarding their numerical values and universality. This challenge is…M. Aguiar Ferreira, B. Ganapathisubramani·Apr 13, 2026SaveLearn
Signal-Aware Conditional Diffusion Surrogates for Transonic Wing Pressure PredictionAccurate and efficient surrogate models for aerodynamic surface pressure fields are essential for accelerating aircraft design and analysis, yet deterministic regressors trained with pointwise losses…Víctor Francés-Belda, Carlos Sanmiguel Vila, Rodrigo Castellanos·Apr 13, 2026SaveLearn
RAPRAL v1.0: RAdiation Prediction using RAy tracing and Line-by-line methods for hypersonic air flowsA new radiation solver, RAPRAL (RAdiation Prediction based on RAy tracing and Line-by-line) implemented in C++, is developed for simulating high-temperature thermochemical nonequilibrium radiative…Yuzhe Zhang, Qizhen Hong, Xiaoyong Wang et al.·Apr 13, 2026SaveLearn
Patchy Polymeric Scalar TurbulenceTurbulent polymeric flows show strong deviations from Kolomogorov-like behaviour resulting from more complex dynamics compared to Newtonian turbulence. We now study the nature of mixing in polymeric…Rahul K. Singh, Marco E. Rosti·Apr 13, 2026SaveLearn
LCS.jl: A High-Performance, Multi-Platform Computational Model in Julia for Turbulent Particle-Laden FlowsMultiphase turbulent flow phenomena are observed not only in industrial devices but also in environmental flows, and direct numerical simulation (DNS) plays a key role in their investigation. Many…Taketo Tominaga, Ryo Onishi·Apr 13, 2026SaveLearn
Non-Monotonic Marangoni Suppression of Hydrodynamic Coarsening in Bicontinuous Liquid-Liquid Phase SeparationHydrodynamic coarsening of bicontinuous domains is a central process in liquid-liquid phase separation, yet how soluble surfactants regulate this process remains poorly understood. Using a validated…Tian Liu, Haohao Hao, Jiaxi Liu et al.·Apr 13, 2026SaveLearn
Finite Vertical Windows: Seeing Only Part of the Picture in Rotating TurbulenceWe report high-resolution measurements of three-dimensional (3D) turbulence in a rapidly rotating fluid. By decomposing the velocity field into a vertically averaged component and a three-dimensional…Omri Shaltiel, Eran Sharon·Apr 13, 2026SaveLearn
Searching for Invariant Solutions to Wall-Bounded Flows using Resolvent-Based OptimisationWe present a robust optimisation framework for computing invariant solutions of wall-bounded flows by recasting the Navier-Stokes equations as a variational problem as established in Ashtari and…Thomas Burton, Sean Symon, Davide Lasagna·Apr 13, 2026SaveLearn