Equal-response probing with replicate calibration identifies scaling relations from noisy observations of complex systemsDimensionless descriptions of complex physical systems can sometimes be reduced further when multiple input groups combine into a single composite scaling coordinate. Identifying such structure from…Dingbang Yan, Zhaoyue Xu, Hua-Dong Yao·Sep 28, 2026SaveLearn
Handling geometric singularities efficiently with the immersed-boundary method: application to ribletsWe present an enhancement of classical immersed boundary methods for the direct numerical simulation of the incompressible Navier-Stokes equations, designed to efficiently cope with geometrical…Stefano Cipelli, Alessandro Chiarini, Maurizio Quadrio et al.·Sep 28, 2026SaveLearn
A generalized, quasi-universal subgrid model for macroscopic moving contact line flowsPredictions of moving contact line flows are challenging due to the stress singularity associated with the no-slip boundary condition on solid surfaces and the inherently multiscale nature of the…Vyankatesh Manoj Mundhada, Manoj Kumar Tripathi·Sep 28, 2026SaveLearn
Physics-Informed Neural Networks for Depth-Averaged Avalanche DynamicsAccurate prediction of avalanche motion is essential for hazard assessment in mountainous terrain. This study develops and evaluates a physics-informed neural network (PINN) framework for the…Pradyumn Singh Sikarwar, Vishal Sharma, Gaurav Bhutani·Sep 28, 2026SaveLearn
Phase-field simulation of interfacial stability in structured gas-liquid contactors: design rules for gas diffusion electrodesMany process engineering applications hold a gas-liquid interface stationary inside a structured solid by a controlled pressure difference. Gas diffusion electrodes (GDEs) are one such case, where…Alexander J. Wagner, Hari Murali Krishna Varma Gottumukkala, Henning Bonart·Sep 28, 2026SaveLearn
On the Rayleigh-Taylor instability of a diffuse interfaceWe present a formulation for the linear stability of the miscible Rayleigh-Taylor instability, retaining viscosity, Fickian mass diffusion, and non-Boussinesq effects. Rather than adopting the…Marildo Kola, Daniel Israel, Aaron Towne·Sep 28, 2026SaveLearn
Wave-Particle Decomposition for Kinetic Equations II: Full Boltzmann equationThe wave-particle decomposition of kinetic relaxation equations is extended to the full Boltzmann equation. An identity transformation writes the collision term as a relaxation toward the local…Chang Liu, Kun Xu·Sep 27, 2026SaveLearn
Experimental assessment of a scalar-dissipation-rate sub-grid-scale closure for Large Eddy Simulation of turbulent premixed flamesA sub-grid closure of the scalar-dissipation rate for the Large Eddy Simulation (LES) of turbulent premixed flames is assessed experimentally. Hotwire anemometry is performed to characterize the…Morteza Nahvi, Sina Kheirkhah·Sep 27, 2026SaveLearn
Compressible unsteady aerodynamics of finite-chord porous aerofoilsA unified linear theory is developed for the unsteady loading of finite-chord aerofoils, rigid or porous, in compressible subsonic flow. The formulation combines Possio's integral operator with a…Seongkyu Lee·Sep 27, 2026SaveLearn
Analytical Criterion for the Turbulent-to-Laminar Transition in Channel FlowAn analytical criterion for the disappearance of turbulent flow in a channel is developed within the Alexeev hydrodynamic equations (AHE). The analysis builds on an analytical representation of the…Alex Fedoseyev·Sep 27, 2026SaveLearn
A wave-particle decomposition framework for multiscale kinetic transport: continuous-spectrum equations and coupled wave-particle iterationThe wave-particle decomposition is presented as a framework for multiscale kinetic transport, comprising a theory and an algorithm. Along the characteristics of the kinetic equation, the equilibrium…Chang Liu, Kun Xu·Sep 27, 2026SaveLearn
Morphology, interactions, and evolution of laminar thermal plumes revealed by time-resolved volumetric velocity measurements and analysis: Application to Earth's mantlePlume-laden convection plays a fundamental role in thermal transport in geophysical and industrial flows. While the dynamics of isolated laminar plumes have been extensively studied, their collective…Xiyuan Bao, Carolina Lithgow-Bertelloni·Sep 27, 2026SaveLearn
A method for measuring and analyzing four-dimensional flow fields in viscous Rayleigh-Bénard convectionLaboratory investigation of convective flow in viscous fluids is crucial for various engineering and geophysical applications, including vigorous convection in planetary mantles, which involves…Xiyuan Bao, Carolina Lithgow-Bertelloni·Sep 27, 2026SaveLearn
Effect of Porous Coating on the Water-Exit Dynamics of a Circular CylinderThe effect of a porous coating on the water-exit dynamics of a circular cylinder is investigated experimentally. Cylinders comprising a 30~mm solid core surrounded by a…Intesaaf Ashraf, Mahender Thotakuri, Neetu Tiwari et al.·Sep 26, 2026SaveLearn
Reduced Subgrid-Scale Terms for Turbulence Simulations with the Lattice Boltzmann MethodTurbulent flows span a wide range of scales, making direct numerical simulation (DNS) prohibitively expensive at high Reynolds numbers. Large eddy simulation (LES) offers a pragmatic alternative by…Rik Hoekstra, Xiao Xue, Peter V. Coveney et al.·Sep 26, 2026SaveLearn
Spall Failure of Coral Skeleton beneath Gas-Laden Canopies: An Idealized Blast-Fishing ModelImprovised explosives used for fishing on shallow Indonesian reefs shatter coral skeleton, yet the damage they cause has been described largely through empirical radii and ecological surveys. We…Sandy Hardian Susanto Herho, Agus Wahyu Jatmiko, Rizki Dimas Permana et al.·Sep 26, 2026SaveLearn
Uncovering flame physics with machine learning: application to the reaction rate in hydrogen flamesConvolutional Neural Networks (CNNs) are used as analytical tools to investigate the relationship between the progress variable field and the local chemical source term in lean premixed hydrogen…Antonio Attili, Ludovico Nista, Tommaso Baffetti et al.·Sep 26, 2026SaveLearn
Benchmark of no-slip boundary conditions for meshless Lattice Boltzmann Method in Stokes flowThe introduction of the approximated streaming to the standard Lattice Boltzmann Method (LBM) decouples the space and velocity discretizations. Although many no-slip implementations knwon from LBM…Dawid Strzelczyk, Pavel Eichler, Maciej Matyka·Sep 26, 2026SaveLearn
A deterministic Fokker--Planck/lattice-Boltzmann micro--macro solver for dilute Hookean polymer solutionsDeterministic micro--macro simulation of polymer solutions requires the coupled evolution and spatial transport of a configuration distribution, together with the conversion of its moments into…Xueqin Liu, Shi Shu, Yaolong Yu et al.·Sep 26, 2026SaveLearn
Reconstruction of Molten Pool Flow Fields from High-Speed Video Using Physics-Informed Neural NetworksMolten pool flow significantly influences bead geometry, defect formation, and solidification microstructure in wire-arc directed energy deposition (DED). However, direct flow sensing remains an open…Yue Cao, Qin Su, Dung Hoang Tien et al.·Sep 26, 2026SaveLearn
Airfoil2Vec: Spectral Geometry-Conditioned Neural Surrogate Models for Airfoil Aerodynamics and a Downforce-Generating CFD DatasetWe introduce a dataset of approximately 10,000 Reynolds-Averaged Navier-Stokes (RANS) simulations of steady, incompressible, two-dimensional subsonic flow around downforce-generating NACA 4-digit…Haitz Sáez de Ocáriz Borde, Flavio Savarino, Andrei Cristian Popescu et al.·Sep 25, 2026SaveLearn
Reversibility and Multiplicity in Liquid-Vapor Phase ChangeUsing diffuse-interface theory, we uncover unexpected phase-change phenomena that are absent from widely used models of evaporation and condensation. In the inviscid limit, the same adjacent…Luiz Eduardo Czelusniak, Alexander J. Wagner, Luben Cabezas Gómez·Sep 25, 2026SaveLearn
A parallel solver for vortex-induced vibrations at zero mass ratioWe present a parallel strategy for the study of the vortex-induced vibrations (VIV) of a rigid, massless cylinder mounted on translational springs, in two and three dimensions. Without mass or…Arthur Bawin, Joan Le Pouhaër, Stéphane Étienne et al.·Sep 25, 2026SaveLearn
Controlling three-dimensional falling liquid films: from weighted-residual models to direct numerical simulationWe consider the problem of controlling a three-dimensional falling liquid film using same-fluid blowing and suction through the substrate. Building upon recent results for the corresponding…Oscar A. Holroyd, Susana N. Gomes, Radu Cimpeanu·Sep 25, 2026SaveLearn
Zero-Mean Oscillations Drive Recirculations in Potential Flows at Vanishing Reynolds NumberRecirculating flows are central to transport phenomena, but their generation in potential flows requires additional physical mechanisms. We show experimentally that recirculation at vanishing…Alexandre S. Avaro, Leon V. Gebhard, Gabriel Amselem et al.·Sep 25, 2026SaveLearn