A Variational Principle for the Vorticity EquationWe present a variational formulation of the incompressible vorticity equation based on Gauss's principle of least constraint using the Gauss constraint functional ω. The central result is…Ahmed Farooq·Aug 21, 2026SaveLearn
Droplet coalescence in fluids obeying Darcy's lawDuring drop coalescence, a connecting bridge of fluid forms and rapidly expands due to surface tension. For spherical drops, these dynamics are well understood in both the viscous and inertial…Jing Wang, Haicen Yue, Nandish Vora et al.·Aug 21, 2026SaveLearn
Zero-gravity convection in a closed duct as the realization of a thermal machineThe possibility of convection in a wall-heated unstirred simple fluid in zero-gravity conditions is discussed. It is shown that a low-Prandtl-number fluid possesses a stable circulating state in zero…Piero Olla·Aug 21, 2026SaveLearn
Short spatial mooring-tilt variations from deep Mediterranean observationsInteraction between energy-abundant mesoscale eddies and internal waves can lead to convection-turbulence generation and may prove important for deep-sea life and circulation. However, the size of…Hans van Haren·Aug 21, 2026SaveLearn
A Low-Fidelity Method for Aerofoil Shape Optimisation for Curvilinear Blade KinematicsThis study develops a low-fidelity framework for aerofoil shape optimisation under curvilinear blade kinematics, using a hovering cyclorotor as a representative case. Aerofoil optimisation can…Benjamin Irwin, David Toal, Swathi Krishna·Aug 21, 2026SaveLearn
Wind farms as sensor arrays of turbulent boundary layer spatio-temporal flow structureTemporal fluctuations of wind farm-generated power arise from the interaction between atmospheric turbulence, turbine properties, and wind-farm layout. However, accurately characterizing these…Manuel Ayala, Dennice Gayme, Charles Meneveau·Aug 20, 2026SaveLearn
Actuator Disk Models reproduce Actuator Line Model power and thrust fluctuation statistics in wind farm simulationsActuator-disk models (ADM) are widely used in wind-farm simulations, but their accuracy in reproducing power and thrust temporal fluctuation statistics has not yet been compared to the more accurate…Manuel Ayala, Dennice Gayme, Charles Meneveau·Aug 20, 2026SaveLearn
Stability and nonlinear dynamics of three-layer viscous films inside a vertical cylindrical tubeWe investigate the dynamics and stability of three immiscible viscous liquid layers coating the interior of a vertical cylindrical tube, a configuration relevant to stratified core--annular transport…David Halpern, Awa Traore·Aug 19, 2026SaveLearn
Effect of Microscale Turbulent Structures Dynamics on Forced Convection in Turbulent Porous Media FlowThe influence of microscale flow structures (smaller than the pore size) on turbulent heat transfer in porous media has not been yet investigated. The goal of this study is to determine the influence…Ching-Wei Huang, Vishal Srikanth, Andrey V. Kuznetsov·Aug 19, 2026SaveLearn
Mach-disk formation and shock-structure transitions in underexpanded coflowing jetsThe near-field shock structures of underexpanded sonic jets exiting into a subsonic coflow are investigated over a range of nozzle pressure ratio (NPR) and coflow-to-nozzle-exit velocity ratio…Ganesh Dhungana, Srijan Satyal, Nek Sharan·Aug 19, 2026SaveLearn
Orientation-dependent drag, lift, and torque correlations for regular Platonic polyhedral particlesIn this work, particle-resolved direct numerical simulations are performed to investigate flow past the five Platonic solids, which represent a progression in particle sphericity with an increasing…Manuel A. Taborda, Berend van Wachem·Aug 19, 2026SaveLearn
Hydrodynamic Brachistochrone: Conflicting Paths of Time and Energy Minima within Viscous MediaWe experimentally and theoretically study the hydrodynamic analog of the classical brachistochrone problem: the time- and energy-minimizing paths for a spherical particle rolling down an…Ramin Gasimli, Lei Yi, Shrabin Bajracharya et al.·Aug 19, 2026SaveLearn
Inter-turbine spacing and flow unsteadiness effects on wake-induced blade dynamicsWind turbines operating downstream of others in a farm are routinely exposed to waked inflow, with reduced mean velocity and elevated turbulence driving power deficits and additional structural…Francisco J. G. de Oliveira, Adrian T. McGlade, Zahra Sharif Khodaei et al.·Aug 19, 2026SaveLearn
Physics-informed neural network for inverse modeling of granular flowsGranular flows are ubiquitous in natural and industrial systems, yet their complex dynamics remain difficult to characterize. For inverse problems involving unknown inlet, outlet, and wall boundary…Bing Wan, Bidan Zhao, Junwu Wang·Aug 19, 2026SaveLearn
Fully Parallel Dual-Grid Immersed-Boundary Framework for Flow-Induced Sound from Complex Moving and Deforming BodiesPredicting flow-induced sound from moving and deforming bodies is computationally demanding because the near-field hydrodynamics and the far-field acoustics require substantially different spatial…Amirhossein Fardi, Muhammad Saif Ullah Khalid·Aug 18, 2026SaveLearn
Intrusive versus non-intrusive reduced-order modeling of generalized Newtonian fluid flowsThis study compares three reduced-order modeling (ROM) approaches for flow simulations of generalized Newtonian fluids described by the Carreau rheological model. All three methods rely on offline…Parajal Rai, Michelle Spanjaards, Patrick Anderson et al.·Aug 18, 2026SaveLearn
A Residual Learning Approach for Unsteady Aerodynamic Load PredictionThis paper investigates the feasibility of using residual learning to improve unsteady aerodynamic load prediction for aeroelastic applications. The machine learning technique selected for the study…Divya Sanghi, Carlos E. S. Cesnik·Aug 18, 2026SaveLearn
Towards Rapid Prototyping of Spray Injectors: A Regime-Agnostic Neural Operator Surrogate for Gas-Liquid Interface EvolutionSpray atomisation rapidly creates large liquid-gas interfacial areas and is central to many industrial processes. However, predicting spray behaviour and surface area remains difficult: experiments…Paolo Guida, Po-Han Chen, Hong G. Im et al.·Aug 18, 2026SaveLearn
Modelling flow-driven pore closure of weakening poroelastic mediaPoroelastic materials, such as polymer tissue scaffolds, porous rocks, and hydrogels, can weaken due to interactions between the solid skeleton and chemical species in the interstitial fluid. We…Matthew V. Ghosh, Matthew G. Hennessy, Andreas Münch et al.·Aug 18, 2026SaveLearn
Roughness-controlled layer in oscillatory turbulent boundary layers over densely packed uniform roughnessIn coastal wave boundary layers over gravel-scale roughness, with near-bed orbital excursions ten to a hundred times the roughness height, the boundary layer is only a few roughness heights thick. A…Xuchen Liu, Yuan Gao, Yiyong Dong et al.·Aug 18, 2026SaveLearn
Steady transport of active particles under continuous release in confined shear flowContinuous release is a fundamental source condition in transport, yet theoretical treatments have focused on downstream concentration development for passive solutes or fully developed…Hanhan Zeng, Guoqian Chen·Aug 18, 2026SaveLearn
Optimal control of a swimming robot based on Purcell's microswimmer modelPurcell's swimmer is a well-known planar model of a swimming microorganism, governed by low Reynolds number hydrodynamics, which is comprised of three rigid links connected by actuated rotary…Noam Berkovich Lahav, Oren Wiezel, Yizhar Or·Aug 18, 2026SaveLearn
Noise-separated evidence for a slow collective displacement in a rarefied hypersonic bow-shock layerTime-resolved direct simulation Monte Carlo (DSMC) fields are used to test whether a detached rarefied hypersonic bow shock contains a slow collective displacement that can be separated from…Ahmad Shoja-sani, Ehsan Roohi·Aug 18, 2026SaveLearn
A Sharp and Conservative VOF Method for Multicomponent Liquid--Gas Mass Transfer: Bubble Dissolution and Droplet EvaporationWe present a sharp and conservative geometrical VOF--finite-volume method for multicomponent liquid--gas mass transfer across deformable interfaces. The method solves problems in which multiple…Shuo Zhao, Jie Zhang, Ming-Jiu Ni·Aug 17, 2026SaveLearn
Liquid bridges between horizontal cylinders: effects of gravity and electric fieldsLiquid bridges suspended between two parallel horizontal cylinders are studied using experiments, reduced-order mathematical modelling and numerical simulations. Both non-electrified and electrified…Agnes J. Bokányi-Tóth, Andrew J. Archer, Radu Cimpeanu et al.·Aug 17, 2026SaveLearn