Pinning induced motion and internal flow in neighbouring evaporating multi-component dropsThe evaporation of multi-component sessile droplets is key in many physicochemical applications such as inkjet printing, spray cooling, and micro-fabrication. Past fundamental research has primarily…Pim J. Dekker, Marjolein N. van der Linden, Detlef Lohse·Dec 11, 2024SaveLearn
Nascent water waves induced by the impulsive motion of a solid wallIn the present study, we investigated the generation phase of laboratory-scale water waves induced by the impulsive motion of a rigid piston, whose maximum velocity U and total stroke L are…Wladimir Sarlin, Zhaodong Niu, Alban Sauret et al.·Dec 11, 2024SaveLearn
Deep Operator Learning for High-Fidelity Fluid Flow Field Reconstruction from Sparse Sensor MeasurementsReconstructing high-fidelity fluid flow fields from sparse sensor measurements is vital for many science and engineering applications but remains challenging because of dimensional disparities…Hiep Vo Dang, Phong C. H. Nguyen·Dec 11, 2024SaveLearn
Computational And Experimental Study of Spanwise Synthetic Jet Flow ControlThis study investigates the reattachment of flow on a stalled NACA 0025 airfoil with an array of circular synthetic jet actuators. Experimental flow visualizations are used to assess the spanwise…Howard Ho, Adnan Machado, Pierre Sullivan·Dec 10, 2024SaveLearn
On the shape of ice stalagmitesThe growth of ice stalagmites obtained by the solidification of impacting droplets on a cooled substrate (-50C to -140C) is investigated experimentally. It is shown that for any…Daniel Papa, Christophe Josserand, Caroline Cohen·Dec 10, 2024SaveLearn
Optimizing pulsed blowing parameters for active separation control in a one-sided diffuser using reinforcement learningReinforcement learning is employed to optimize the periodic forcing signal of a pulsed blowing system that controls flow separation in a fully-turbulent Reθ = 1000 diffuser flow. Based on the…Alexandra Müller, Tobias Schesny, Ben Steinfurth et al.·Dec 10, 2024SaveLearn
Automatic extraction of wall streamlines from oil-flow visualizations using a convolutional neural networkOil-flow visualizations represent a simple means to reveal time-averaged wall streamline patterns. Yet, the evaluation of such images can be a time-consuming process and is subjective to human…Jonas Schulte-Sasse, Ben Steinfurth, Julien Weiss·Dec 10, 2024SaveLearn
Efficient methods for particle-resolved direct numerical simulationIn the present chapter we focus on the fundamentals of non-grid-conforming numerical approaches to simulating particulate flows, implementation issues and grid convergence vs. available reference…Markus Uhlmann, Jos Derksen, Anthony Wachs et al.·Dec 10, 2024SaveLearn
Design of a variable-Mach-number waverider by the osculating-curved-cone method using a rational distribution function and incorporating the equilibrium-gas modelWhen a waverider flies at hypersonic speed, the thermodynamic properties of the surrounding gas change because of the rapid increase in temperature, so it is reasonable to consider real-gas effects…Mengyu Wang, Yi Duan, Qin Li et al.·Dec 10, 2024SaveLearn
Collision Dynamics and Deformation Behaviors of Multi-Core Compound Droplet Pairs in Microchannel FlowWe numerically investigate the collision dynamics and deformation behaviors of double-core compound droplet pairs within confined shear flows using free-energy-based lattice Boltzmann method. While…S M Abdullah Al Mamun, Samaneh Farokhirad·Dec 10, 2024SaveLearn
Dynamics of vorticity moments in shell models of turbulence: A comparison with the Navier-Stokes equationsShell models allow much greater scale separations than those presently achievable with direct numerical simulations of the Navier-Stokes equations. Consequently, they are an invaluable tool for…John D. Gibbon, Dario Vincenzi·Dec 10, 2024SaveLearn
Simulating Moving Contact Lines in Three-Phase Suspensions Using a Front Tracking MethodThree-phase multiphase flows are found in an extraordinarily large number of applications. Often those involve a liquid phase and a gas phase in addition to a third phase that consists of either…Lei Zeng, Hamideh Rouhanitazangi, Xianyang Chen et al.·Dec 9, 2024SaveLearn
On the influence of the heat transfer at the free surface of a thermally-driven rotating annulusExperiments on rotating annuli that are differentially heated in the radial direction have been largely contributing to a better understanding of baroclinic instabilities. This configuration creates…Gabriel Meletti, Stéphane Abide, Uwe Harlander et al.·Dec 9, 2024SaveLearn
Suspension Dynamics of Droplets in Acoustic and Gravitational FieldsIn the field of acoustic suspension or levitation of droplets against gravity, the application of Gorkov's acoustic radiation force for small particles (within the Rayleigh limit) or its extensions…Jeyapradhap Thirisangu, Anjan Mahapatra, Karthick Subramani·Dec 9, 2024SaveLearn
Concerning the Use of Turbulent Flow Data for Machine LearningThis article describes some common issues encountered in the use of Direct Numerical Simulation (DNS) turbulent flow data for machine learning. We focus on two specific issues; 1) the requirements…Mohammed Sardar, Małgorzata J. Zimoń, Samuel Draycott et al.·Dec 8, 2024SaveLearn
Event-based reconstruction of time-resolved centreline deformation of flapping flagsHigh-speed imaging is central to the experimental investigation of fast phenomena, like flapping flags. Event-based cameras use new types of sensors that address typical challenges such as low…Gaetan Raynaud, Karen Mulleners·Dec 8, 2024SaveLearn
Hydrodynamic density-functional theory for the moving contact-line problem reveals fluid structure and emergence of a spatially distinct patternUnderstanding the nanoscale effects controlling the dynamics of a contact line -- defined as the line formed at the junction of two fluid phases and a solid -- has been a longstanding problem in…Andreas Nold, Benjamin D. Goddard, David N. Sibley et al.·Dec 7, 2024SaveLearn
Temporal modulation on mixed convection in turbulent channelsWe studied flow organization and heat transfer properties in mixed turbulent convection within Poiseuille-Rayleigh-B\'enard channels subjected to temporally modulated sinusoidal wall temperatures.…Ao Xu, Rui-Qi Li, Heng-Dong Xi·Dec 7, 2024SaveLearn
A Variational Computational-based Framework for Unsteady Incompressible FlowsAdvancements in computational fluid mechanics have largely relied on Newtonian frameworks, particularly through the direct simulation of Navier-Stokes equations. In this work, we propose an…H. Sababha, A. Elmaradny, H. Taha et al.·Dec 7, 2024SaveLearn
Bubble dynamics in a cavitating venturiCryogenic fluids have extensive applications as fuel for launch vehicles in space applications and research. The physics of cryogenic flows are highly complex due to the sensitive nature of phase…Premchand V Chandra, Anuja Vijayan, Pradeep Kumar P·Dec 6, 2024SaveLearn
GLONET: Mercator's end-to-end neural Global Ocean forecasting systemAccurate ocean forecasting is crucial in different areas ranging from science to decision making. Recent advancements in data-driven models have shown significant promise, particularly in weather…Anass El Aouni, Quentin Gaudel, Charly Regnier et al.·Dec 6, 2024SaveLearn
Dual Euler--Poincar\'e/Lie--Poisson formulation of subinertial stratified thermal ocean flow with identification of Casimirs as Noether quantitiesThis paper investigates the geometric structure of a quasigeostrophic approximation to a recently introduced reduced-gravity thermal rotating shallow-water model that accounts for stratification.…Francisco J. Beron-Vera, Erwin Luesink·Dec 6, 2024SaveLearn
A Unified Theory for Chaotic Mixing in Porous Media: from Pore Networks to Granular SystemsRecent studies have revealed the central role of chaotic stretching and folding at the pore scale in controlling mixing within porous media, whether the solid phase is discrete (as in granular and…Daniel Lester, Joris Heyman, Yves Meheust et al.·Dec 6, 2024SaveLearn
Is Chaotic Advection Inherent to Heterogeneous Darcy Flow?At all scales, porous materials stir interstitial fluids as they are advected, leading to complex distributions of matter and energy. Of particular interest is whether porous media naturally induce…Daniel R. Lester, Michael G. Trefry, Guy Metcalfe et al.·Dec 6, 2024SaveLearn
Linking Dispersion and Stirring in Randomly Braiding FlowsMany random flows, including 2D unsteady and stagnation-free 3D steady flows, exhibit non-trivial braiding of pathlines as they evolve in time or space. We show that these random flows belong to a…Daniel R. Lester, Michael G. Trefry, Guy Metcalfe·Dec 6, 2024SaveLearn