Thermocapillary stabilization of Liquid Space TelescopesWe investigate how spatially uniform, time-modulated heating can be used to stabilize a thin liquid mirror in microgravity. Periodic heating generates oscillatory thermocapillary flows that suppress…Ryan Engle, Valeri Frumkin·Oct 6, 2026SaveLearn
Simulation of Weakly Ionized Hypersonic Flows with Reactive Species Weighting Scheme in the Direct Simulation Monte Carlo MethodThe conservative species weighting scheme enables the direct simulation Monte Carlo (DSMC) method to resolve trace species such as electrons and ions in weakly ionized flows. The present study…Takato Morimoto, Virgile Charton, Eiichiro Yamaoka et al.·Oct 6, 2026SaveLearn
Physically Organized Latent Spaces in Unsupervised Autoencoders: Evidence from Aerodynamic DatabasesUsing aerodynamic databases of progressively increasing complexity - from linear analytical theory to nonlinear separated RANS flows - we demonstrate that an autoencoder, trained solely by…Renato Tognaccini, Ettore Saetta, Gianluca Iaccarino·Oct 6, 2026SaveLearn
Motif: A Modular Finite-Volume Framework for Transient Incompressible FlowThis document presents the theory, implementation, and verification of Motif, a two-dimensional incompressible flow solver developed as a teaching and research framework. The governing equations are…Utku Şentürk·Oct 6, 2026SaveLearn
A Lagrangian analysis of coherent structures in 2D annular Rayleigh-Bénard convectionConvective instabilities are studied from a Lagrangian perspective in order to gain new insights into how the resulting global, long-lived coherent flow structures organize themselves. We consider a…Luis Álamo, Jezabel Curbelo, Kathrin Padberg-Gehle·Oct 6, 2026SaveLearn
Only Linear Constraints Survive Coarse-Graining: Evaluating Physics-Constrained Neural Operators on Stochastically Forced TurbulenceA physics-informed loss adds a discretised PDE residual to the data term, but is only strictly valid if the equations being enforced are closed on the fields being fitted. This fails on…Michael Groom, Rafael Oliveira·Oct 6, 2026SaveLearn
Direct numerical simulations of multi-layer Rayleigh-Taylor instability under asymmetric interfacial density stratificationDirect numerical simulations of thermally stratified multi-layer Rayleigh-Taylor instability are performed to investigate the influence of interfacial Atwood number (At) on instability growth,…Abhijeet Guha, Prasoon Suchandra, Aditi Sengupta·Oct 6, 2026SaveLearn
Airborne liquid marble: Evaporation dynamics of liquid marble in acoustic levitationLiquid marbles (LMs), droplets encapsulated by hydrophobic particles, allow for non-wetting manipulation and containerless handling, making them well-suited for applications such as microreactors.…Keigo Noro, Xiao Ma, Koji Hasegawa·Oct 6, 2026SaveLearn
Vectorial discrete unified gas kinetic scheme for continuum compressible flowsA vectorial discrete unified gas kinetic scheme (V-DUGKS) is proposed for continuum compressible flows. In the vectorial kinetic framework, mass, momentum, and total energy are represented by coupled…Yinghao Ma, Ziyang Xin, Zhaoli Guo·Oct 6, 2026SaveLearn
Erasing and Regenerating the Turbulent Cascade ArrowWhich information tells a turbulent flow which way to cascade? We apply Haar-distributed Hermitian phases that retain prescribed same-mode quadratic information, including modal amplitudes, the…Yang Zhao, Daocheng Zhou, Hongfu Zhang·Oct 5, 2026SaveLearn
Number Theory of Decaying Turbulence 3: Comparing with Physical and Numerical ExperimentsWe compare the predictions of the Euler-ensemble solution of freely decaying incompressible turbulence with simulations and experiments: the scaling function of the energy spectrum, the index of the…Alexander Migdal, Wei Wang·Oct 5, 2026SaveLearn
(Why) Jets quantise trapped acoustic modesHigh-subsonic turbulent jets trap acoustic modes in their potential core. The modes lie in narrow frequency bands that are O(0.1)-wide in Strouhal number, St. By studying a Mach 0.9, Reynolds…Brandon Yeung, Michael N. Stavropoulos, Vincent Jaunet et al.·Oct 5, 2026SaveLearn
Equations of motion for dust particles in dust-collecting devices (Translated article from USSR Journal Otoplenie i Ventilyatsiya, No. 4 (1934): 27-29)Preface for the English Translation: While checking out early USSR journal articles for our literature search, we recently had tremendous difficulty acquiring this 1934 Klyachko original publication…L. S. Klyachko·Oct 5, 2026SaveLearn
Small density differences, large Richardson numbers: buoyancy decides where gypsum deposits in a centifluidic confluence cellThe mixing of two aqueous streams in small channels is usually modeled with constant density when the difference in density between the streams is only a few percent or less. In this paper, we…Isaac Appelquist Løge, Candela Almazán Pérez, Maike W. Baltussen·Oct 5, 2026SaveLearn
Well-posed by Design: Learning Constitutive Laws from Velocity Data using Convex Neural Network PotentialsLearning constitutive laws of complex fluids from velocity data (i.e. indirect observations) is a PDE-constrained inverse problem in which expressive neural parameterizations risk breaking the…Gonzalo G. de Diego, Georg Stadler·Oct 5, 2026SaveLearn
Accurate contact discontinuity resolving Boltzmann schemes based on peculiar velocityStarting from the robust foundation of the peculiar velocity based upwind (PVU) Boltzmann scheme, which fails to recognize contact discontinuities, this paper introduces new variants for the…Balwinder Singh, S. V. Raghurama Rao·Oct 5, 2026SaveLearn
Direct Numerical Simulation of Transonic Flows Induced Pitching of NACA AirfoilA Direct Numerical Simulation (DNS) investigates transonic flow over a NACA0012 airfoil coupled with single-DOF structural dynamics. Analysis is performed for angle of attack (α) 8° with varying…Chandan Kumar Bhardwaj, Swagata Bhaumik·Oct 5, 2026SaveLearn
A Semi-Implicit All-Mach Numerical Method for Implicit Large Eddy SimulationsImplicit Large Eddy Simulation (ILES) is a well established approach for modeling high-Reynolds-number turbulent flows by numerical solution of the inviscid Euler equations in 3D. These turbulent…Simon D. Wilkinson·Oct 5, 2026SaveLearn
A simple Lagrangian for shallow water equations with constant potential vorticityInspired by a recent gauge field description of shallow water equations [SciPost Phys. 14 (2023) 102], in this work we build a simple Lagrangian formulation for the case of constant potential…Anton Galajinsky·Oct 5, 2026SaveLearn
Studying oscillation death in two-dimensional cylinder-airfoil interactions with synchronization-theoretic autoencoderBody-body interactions have long been investigated to leverage the performance of various fluid-based machines. This study analyzes the flow interaction between a cylinder and a NACA0012 airfoil…Yuta Ushida, Daiki Beppu, Yuzuru Kato et al.·Oct 5, 2026SaveLearn
Droplet-triggered Faraday waves in a vertically forced bathRepeated impacts of a droplet on a vertically forced bath can produce a growing Faraday-wave response under forcing conditions for which the corresponding initially undisturbed bath remains linearly…Fahim Tanfeez Mahmood, C. Ricardo Constante-Amores·Oct 4, 2026SaveLearn
Gas-surface scattering and collisional feedback in rarefied hypersonic flow past an inclined flat plateThrough intermolecular collisions, a gas-surface scattering law can reshape the incident molecular population on which it acts. We examine this feedback using direct simulation Monte Carlo for…Einar Nævdal, Sebastian A. Altmeyer·Oct 4, 2026SaveLearn
Generating Kolmogorov spectra and structure functions with a Rosenhead profile trefoil vortex knotMotivated by recent experimental observations by Matsuzawa et al. (2026) of colliding several vortex rings within a water tank, this paper extends a compact trefoil vortex simulation to later times…Robert M. Kerr·Oct 4, 2026SaveLearn
Landau damping and mode-selective instability of a vortex gasWe show that a collisionless point-vortex gas behaves as a genuine Vlasov system. Starting from the non-canonical Hamiltonian structure of point-vortex dynamics, we derive a reduced Klimontovich…H. Terças, J. L. Figueiredo, J. T et al.·Oct 4, 2026SaveLearn
Weakly Nonlinear Analysis of Phototactic Bioconvection under Thermal BuoyancyA weakly nonlinear stability analysis is performed to investigate the influence of thermal buoyancy on phototactic bioconvection in a suspension of swimming microorganisms confined between horizontal…Sandeep Kumar, Suneet Singh·Oct 3, 2026SaveLearn