Developing the next generation of dual-tip phase-detection probes for air-water flow experimentsSelf-aeration is a fascinating phenomenon that commonly occurs in high Froude-number flows in natural or human made environments. The most common air-water flow measurement instrument to characterize…Matthias Kramer·Aug 12, 2024SaveLearn
Dynamic hysteresis of an oscillatory contact lineDuring oscillatory wetting, a phase retardation emerges between contact angle variation and contact line velocity, presenting as a hysteresis loop in their correlation -- an effect we term dynamic…Jiaxing Shen, Yaerim Lee, Yuanzhe Li et al.·Aug 11, 2024SaveLearn
A generalized three-dimensional hybrid contact method for smoothed particle hydrodynamicsWhen the effects of relative motion at the solid object interfaces are not negligible, the contact method is required in the smoothed particle hydrodynamics (SPH) method to prevent virtual shear and…Wenbin Liu, Zhuoping Duan, Yan Liu et al.·Aug 11, 2024SaveLearn
A Workflow for Utilizing OpenFOAM Data Structure in Physics-Informed Deep Learning TrainingThis study presents a novel methodology for integrating physics-informed loss functions into deep learning models using OpenFOAM's comprehensive data structures. Leveraging the robust and flexible…Yijin Mao, Yuwen Zhang·Aug 10, 2024SaveLearn
Experimental Investigation of Tidally-Forced Internal Wave Turbulence at High Reynolds NumberThrough basin-scale circulations, the ocean regulates global distributions of heat, nutrients, and greenhouse gases. To properly predict the future of the ocean under climate change, we need to…Zachary Taebel, Alberto Scotti, Pierre-Yves Passaggia et al.·Aug 10, 2024SaveLearn
Flame Modelling of Premixed Ammonia Combustion in Swirl Burner using LESThe objective of the LES simulation is to investigate how operational parameters affect flame properties in combustion of the premixed NH3/H2/air inside a swirling burner. Key parameters explored…LE Quang Tuyen, Nguyen Van Bo, Ma Shengwei et al.·Aug 10, 2024SaveLearn
Pressure-Velocity Coupling in Transpiration CoolingTranspiration cooling is an active thermal protection system of increasing interest in aerospace applications wherein a coolant is effused through a porous wall into a hot external flow. The present…Sophie Hillcoat, Jean-Pierre Hickey·Aug 9, 2024SaveLearn
Viscoelastic Worthington jets & droplets produced by bursting bubblesBubble bursting and subsequent collapse of the open cavity at free surfaces of contaminated liquids can generate aerosol droplets, facilitating pathogen transport. After film rupture, capillary waves…Ayush K. Dixit, Alexandros Oratis, Konstantinos Zinelis et al.·Aug 9, 2024SaveLearn
Dynamically relevant recurrent flows obtained via a nonlinear recurrence function from two-dimensional turbulenceThis paper demonstrates the efficient extraction of unstable recurrent flows from two-dimensional turbulence by using nonlinear triads to diagnose recurrence in direct numerical simulations. Nearly…Edward M. Redfern, Andrei L. Lazer, Dan Lucas·Aug 9, 2024SaveLearn
Mode-to-mode nonlinear energy transfer in turbulent channel flowsWe investigate nonlinear energy transfer for channel flows at friction Reynolds numbers of Reτ=180 and 590. The key feature of the analysis is that we introduce a new variable, which…Jitong Ding, Daniel Chung, Simon J. Illingworth·Aug 9, 2024SaveLearn
Numerical simulation and analysis of mixing enhancement due to chaotic advection using an adaptive approach for approximating the dilution indexLagrangian particle-tracking methods are particularly suitable to study solute transport in velocity fields displaying chaotic advection. They can accurately resolve stretching and folding processes,…Carla Feistner, Mónica Basilio Hazas, Barbara Wohlmuth et al.·Aug 9, 2024SaveLearn
Weak-inertial effects on destabilized receding contact linesIt is known that beyond a critical speed, the straight contact line of a partially-wetting liquid destabilizes into a corner. In one of the earliest theoretical works exploring this phenomenon, [L.…Akhil Varma·Aug 9, 2024SaveLearn
Computational Realization of Popping Impinging Sprays of Hypergolic Bipropellants by a Eulerian-Lagrangian ApproachThis work adopts a Eulerian-Lagrangian approach to numerically simulate the spray impingement of MMH (Monomethyl hydrazine)/NTO (nitrogen tetroxide), which are prevalent rocket engine bipropellants…Jinyang Wang, Kai Sun, Tianyou Wang et al.·Aug 9, 2024SaveLearn
The effect of Reynolds number on the separated flow over a low-aspect-ratio wingAt high incidence, low-aspect-ratio wings present a unique set of aerodynamic characteristics, including flow separation, vortex shedding, and unsteady force production. Furthermore, low-aspect ratio…Luke Smith, Kunihiko Taira·Aug 9, 2024SaveLearn
Robust pore-resolved CFD through porous monoliths reconstructed by micro-computed tomography: From digitization to flow predictionPorous media are ubiquitous in energy storage and conversion, catalysis, biomechanics, hydrogeology, as well as many other fields. These materials possess high surface-to-volume ratios and their…Olivier Guévremont, Lucka Barbeau, Vaiana Moreau et al.·Aug 8, 2024SaveLearn
Energy Method and Stability of Shear Flows: an Elementary TutorialThis paper provides a pedagogical introduction to the classical nonlinear stability analysis of the plane Poiseuille and Couette flows. The whole procedure is kept as simple as possible by presenting…Antonio Barletta, Giuseppe Mulone·Aug 8, 2024SaveLearn
The oscillating and vibrating cylinder: a benchmark to study low Mach number aeroacousticsHydrodynamic and acoustic scales separate as the Mach number decreases, making the modelling of aeroacoustic phenomena singular in this flow regime. The benchmark of the flow developing around an…Étienne Spieser, Siyang Zhong, Xin Zhang·Aug 8, 2024SaveLearn
Contact angle hysteresis and static friction for two-dimensional dropletsContact angle hysteresis of droplets will be examined in light of static friction between liquid drop and solid surface. Unlike frictions in solid-solid interfaces, pinning forces at contact points…Jong-In Yang, Jooyoo Hong·Aug 8, 2024SaveLearn
Asymmetry of imploding detonations in thin channelsThe factors that influence the symmetry of an imploding detonation are investigated experimentally and theoretically. Detonations in sub-atmospheric acetylene-oxygen were initiated and made to…Sebastian Rodriguez Rosero, Jason Loiseau, Andrew J. Higgins·Aug 8, 2024SaveLearn
Proper orthogonal decomposition analysis of square lid driven cavity flows containing particle suspensionsContinual perturbations to the flow field in the square lid driven cavity can significantly impact both its stability and the dynamic characteristics of the system. In this study, the effect of these…John Shelton, Nitin Katiki, Morakinyo Adesemowo·Aug 7, 2024SaveLearn
Bubble collapse near a wall. Part 1: An experimental study on the impact of shock waves and microjet on the wall pressureThis study examines the pressure exerted by a cavitation bubble collapsing near a rigid wall. A laser-generated bubble in a water basin undergoes growth, collapse, second growth, and final collapse.…Roshan Kumar Subramanian, Zhidian Yang, Francesco Romanò et al.·Aug 6, 2024SaveLearn
Next-order balanced model captures submesoscale physics and statisticsUsing nonlinear simulations in two settings, we demonstrate that QG+1, a potential-vorticity based next-order-in-Rossby balanced model, captures several aspects of ocean submesoscale…Ryan Shìjié Dù, K. Shafer Smith, Oliver Bühler·Aug 6, 2024SaveLearn
On the unsteady aerodynamics of flapping wings under dynamic hovering kinematicsHummingbirds and insects achieve outstanding flight performance by adapting their flapping motion to the flight requirements. Their wing kinematics can change from smooth flapping to highly dynamic…Romain Poletti, Andre Calado, Lilla K. Koloszar et al.·Aug 6, 2024SaveLearn
Flame Transfer Function Measurement of a Hydrogen-Blended Sequential CombustorThe flame transfer function (FTF) relates acoustic perturbations and the coherent heat release rate response. This frequency-dependent function governs the thermoacoustic stability of a combustor.…Bayu Dharmaputra, Pushkin Nagpure, Matteo Impagnatiello et al.·Aug 6, 2024SaveLearn
The impact of transience in the interaction between orographic gravity waves and mean flowA Lagrangian gravity-wave parameterization (MS-GWaM, Multi-Scale Gravity-Wave Model) that allows for fully transient wave-mean-flow interaction and horizontal propagation is applied to orographic…Felix Jochum, Ray Chew, François Lott et al.·Aug 6, 2024SaveLearn