Fake turbulenceHigh-dimensional dynamical systems projected onto a reduced-order model cease to be deterministic and are best described by probability distributions in state space. Their equations of motion map…Javier Jiménez·Mar 14, 2024SaveLearn
Experimental study of dynamic wetting behavior through curved microchannels with automated image analysisPreventing fluid penetration poses a challenging reliability concern in the context of power electronics, which is usually caused by unforeseen microfractures along the sealing joints. A better and…Huijie Zhang, Anja Lippert, Ronny Leonhardt et al.·Mar 14, 2024SaveLearn
Building-block flow model for computational fluidsWe introduce a closure model for wall-modeled large-eddy simulation (WMLES), referred to as the Building-block Flow Model (BFM). The foundation of the model rests on the premise that a finite…Gonzalo Arranz, Yuenong Ling, Sam Costa et al.·Mar 13, 2024SaveLearn
The minimal seed for transition to convective turbulence in heated pipe flowIt is well known that buoyancy suppresses, and can even laminarise turbulence in upward heated pipe flow. Heat transfer seriously deteriorates in this case. Through a new DNS model, we confirm that…Shijun Chu, Ashley P. Willis, Elena Marensi·Mar 13, 2024SaveLearn
Bubble breakup probability in turbulent flowsBubbles drive gas and chemical transfers in various industrial and geophysical contexts, in which flows are typically turbulent. As gas and chemical transfers are bubble size dependent, their…Aliénor Rivière, Stéphane Perrard·Mar 13, 2024SaveLearn
On the selection of Saffman-Taylor viscous fingers for divergent flow in a wedgeWe study self-similar viscous fingering for the case of divergent flow within a wedge-shaped Hele-Shaw cell. Previous authors have conjectured the existence of a countably-infinite number of selected…Cecile Andersen, Christopher J. Lustri, Scott W. McCue et al.·Mar 13, 2024SaveLearn
Direct numerical simulation of transition under free-stream turbulence and the influence of large integral length scalesUnder action of free-stream turbulence (FST), elongated streamwise streaky structures are generated inside the boundary layer, and their amplitude and wavelength are crucial for the transition onset.…Kristina Đurović, Ardeshir Hanifi, Philipp Schlatter et al.·Mar 13, 2024SaveLearn
Generalised Taylor dispersion of chiral microswimmersTransport phenomena of microswimmers in fluid flows play a crucial role in various biological processes, including bioconvection and cell sorting. In this paper, we investigate the dispersion…Keito Ogawa, Kenta Ishimoto·Mar 13, 2024SaveLearn
High energy dissipation rates from the impingement of free paper-thin sheets of liquids: Determination of the volume of the energy dissipation zoneThe micromixing time of impinging thin liquid sheets depends upon the energy dissipation rate. The kinetic energy released by the impingement has been previously studied and was found to be a…Robert J. Demyanovich·Mar 12, 2024SaveLearn
Percolation without trapping: how Ostwald ripening during two-phase displacement in porous media alters capillary pressure and relative permeabilityConventional measurements of two-phase flow in porous media often use completely immiscible fluids, or are performed over time-scales of days to weeks. If applied to the study of gas storage and…Ademola Isaac Adebimpe, Sajjad Foroughi, Branko Bijeljic et al.·Mar 12, 2024SaveLearn
Programming droplet motion using metamaterialsMotion control of droplets has generated much attention for its applications to microfluidics, where precise control of small fluid volumes is an imperative requirement. Mechanical vibrations have…Mohammad Charara, Zak Kujala, Sungyon Lee et al.·Mar 12, 2024SaveLearn
On disintegration of lean hydrogen flames in narrow gapsThe disintegration of near limit flames propagating through the gap of Hele-Shaw cells has recently become a subject of active research. In this paper, the flamelets resulting from the disintegration…Jorge Yanez, Leonid Kagan, Mike Kuznetsov et al.·Mar 12, 2024SaveLearn
Turbulent mixed convection in vertical and horizontal channelsTurbulent shear flows driven by a combination of a pressure gradient and buoyancy forcing are investigated using direct numerical simulations. Specifically, we consider the setup of a differentially…Christopher J. Howland, Guru Sreevanshu Yerragolam, Roberto Verzicco et al.·Mar 12, 2024SaveLearn
Study of parameters affecting the cooling capacity of liquid jets by using OpenFoam as tool to solve the inverse heat transfer problemIn this work, some of the parameters influencing the cooling capacity of a liquid jet impinging onto Inconel 718 and C45 plates were experimentally investigated. The experiment included a high-speed…Kaissar Nabbout, Martin Sommerfeld·Mar 12, 2024SaveLearn
Modulational instability of nonuniformly damped, broad-banded waves: applications to waves in sea-iceThis paper sets out to explore the modulational (or Benjamin-Feir) instability of a monochromatic wave propagating in the presence of damping such as that induced by sea-ice on the ocean surface. The…Raphael Stuhlmeier, Conor Heffernan, Alberto Alberello et al.·Mar 12, 2024SaveLearn
Migration of two Interacting Micro-Confined Deformable Drops Under an Imposed Temperature GradientA tiny drop of one liquid, suspended within another, may be set into motion aligned with an imposed thermal gradient, as influenced by thermocapillary action stemming from the gradients in…Sayak Ray, Sudipta Ray, Suman Chakraborty·Mar 12, 2024SaveLearn
On the stability of fully nonlinear hydraulic-fall solutions to the forced water-wave problemTwo-dimensional free-surface flow over localised topography is examined with the emphasis on the stability of hydraulic-fall solutions. A Gaussian topography profile is assumed with a positive or…Jack S. Keeler, Mark G. Blyth·Mar 11, 2024SaveLearn
Noise-induced transitions past the onset of a steady symmetry-breaking bifurcation: the case of the sudden expansionWe consider fluid flows, governed by the Navier-Stokes equations, subject to a steady symmetry-breaking bifurcation and forced by a weak noise acting on a slow time scale. By generalizing the…Yves-Marie Ducimetière, Edouard Boujo, François Gallaire·Mar 11, 2024SaveLearn
Nested traveling wave structures in elastoinertial turbulenceElastoinertial turbulence (EIT) is a chaotic flow resulting from the interplay between inertia and viscoelasticity in wall bounded shear flows. Understanding EIT is important because it is thought to…Manish Kumar, Michael D. Graham·Mar 11, 2024SaveLearn
A preconditioning for the spectral solution of incompressible variable-density flowsIn the present study, the efficiency of preconditioners for solving linear systems associated with the discretized variable-density incompressible Navier-Stokes equations with semiimplicit…L. Reynier, Bastien Di Pierro, Frédéric Alizard et al.·Mar 11, 2024SaveLearn
Time-dependent nonlinear gravity-capillary surface waves with viscous dissipation and wind forcingWe develop a time-dependent conformal method to study the effect of viscosity on steep surface waves. When the effect of surface tension is included, numerical solutions are found that contain highly…Josh Shelton, Paul Milewski, Philippe H. Trinh·Mar 11, 2024SaveLearn
Nonlinear spatial evolution of degenerate quartets of water wavesIn this manuscript we investigate the Benjamin-Feir (or modulation) instability for the spatial evolution of water waves from the perspective of the discrete, spatial Zakharov equation, which…Conor Heffernan, Amin Chabchoub, Raphael Stuhlmeier·Mar 11, 2024SaveLearn
Burns turbulent dispersion considers the dispersed phase as a passive scalarThe Burns turbulent dispersion force is the most commonly used turbulent dispersion in the twofluid RANS bubbly-flow literature. However, its derivation is based on a series of hypothesis that are…Corentin Reiss·Mar 11, 2024SaveLearn
Elasticity affects the shock-induced aerobreakup of a polymeric dropletBoger fluids are viscoelastic liquids having constant viscosity for a broad range of shear rates. They are commonly used to separate the effects of liquid elasticity from viscosity in any experiment.…Navin Kumar Chandra, Shubham Sharma, Saptarshi Basu et al.·Mar 11, 2024SaveLearn
Breakup of oil slicks on wavy water surfacesWe hypothesize that the spread of oil slicks on the water's surface during oil spills is significantly influenced by water wave motion at the initial or intermediate spreading stages, well before…Alex V. Lukyanov, Hanan Hozan, Tristan Pryer et al.·Mar 11, 2024SaveLearn