Scaling with the Stars: The emergence of marginal stability in low Prandtl number turbulenceTo improve models of the structure and evolution of stellar and planetary interiors, it is important to quantify transport by strongly stratified turbulence in low Prandtl number fluids. Recent…Kasturi Shah·Oct 23, 2024SaveLearn
Modulation leading to frequency downshifting of water waves in the vicinity of the Benjamin-Feir transitionFor Stokes waves in finite depth within the neighbourhood of the Benjamin-Feir stability transition, there are two families of periodic waves, one modulationally unstable and the other stable. In…Daniel J. Ratliff, Olga Trichtchenko, Thomas J. Bridges·Oct 22, 2024SaveLearn
Flutter stability of twin-box bridge decksThe present paper reports on wind tunnel tests and analyses carried out to investigate the effect of the static angle of attack on the aerodynamic stability of a twin-box bridge deck section. It is…Maja Rønne, Allan Larsen, Jens H. Walther et al.·Oct 22, 2024SaveLearn
Evaporating sessile droplets: solutal Marangoni effects overwhelm thermal Marangoni flowWhen an evaporating water droplet is deposited on a thermally conductive substrate, the minimum temperature will be at the apex due to evaporative cooling. Consequently, density and surface tension…Duarte Rocha, Philip L. Lederer, Pim J. Dekker et al.·Oct 22, 2024SaveLearn
High-Order Dynamic Integration Method (HODIM) for Modeling Turbulent Fluid DynamicsThis research explores the development and application of the High-Order Dynamic Integration Method for solving integro-differential equations, with a specific focus on turbulent fluid dynamics.…Rômulo Damasclin Chaves dos Santos, Jorge Henrique de Oliveira Sales·Oct 22, 2024SaveLearn
Low Reynolds number pumping near an elastic half spacePrevious studies on peristalsis, the pumping of fluid along a channel by wave-like displacements of the channel walls, have shown that the elastic properties of the channel and the peristaltic wave…Avery Trevino, Thomas R. Powers, Roberto Zenit et al.·Oct 22, 2024SaveLearn
Modulating outcomes of oil drops bursting at a water-air interfaceRecent studies have shown that capillary waves generated by bursting of an oil drop at the water-air interface produces a daughter droplet inside the bath while part of it floats above it. Successive…Varun Kulkarni, Suhas Tamvada, Yashasvi Venkata Lolla et al.·Oct 22, 2024SaveLearn
Rayleigh-Plateau Instability on an angled and eccentric fiber: An alternative approachThis research explores the modulation of Rayleigh-Plateau instability by adjusting the orientation angle and eccentricity of a wire within a nozzle. We demonstrate that both the angle and…Dilip Kumar Maity, Christopher Wagstaff, Sandip Dighe et al.·Oct 22, 2024SaveLearn
Viscoelastic thin film lubrication in finite width channelsLubricant viscoelasticity arises due to a finite polymer relaxation time (λ) and can provide beneficial effects. In applications, such as bearings, gears, biological joints, etc., where the…Humayun Ahmed, Luca Biancofiore·Oct 22, 2024SaveLearn
Modeling water infiltration into soil under fractional wettability conditionsThe heterogeneous distribution of water-repellent materials at the soil surface causes a phenomenon known as fractional wettability. This condition frequently triggers destabilization of the wetting…Simone Di Prima, Ryan D Stewart, Majdi R Abou Najm et al.·Oct 22, 2024SaveLearn
Efficient Implementation of an Accurate Algebraic Scheme for Sharp Interface Advection in Multiphase FlowsThis study presents an efficient algebraic scheme known as MULES for sharp interface advection, verified against various schemes including first-order upwind, second-order central, van Leer flux…Mehran Sharifi·Oct 22, 2024SaveLearn
Large-Eddy Simulations of Stochastic Burgers Turbulence Using Fully Conservative Higher-Order SchemesThe study of Large-Eddy Simulations (LES) in turbulent flows continues to be a critical area of research, particularly in understanding the behavior of small-scale turbulence structures and their…Mehran Sharifi·Oct 22, 2024SaveLearn
An implicit coupling framework for numerical simulations between hypersonic nonequilibrium flows and charring material thermal response in the presence of ablationAn implicit coupling framework between hypersonic nonequilibrium flows and material thermal response is proposed for the numerical simulation of ablative thermal protection materials during its…Jingchao Zhang, Chunsheng Nie, Jinsheng Cai et al.·Oct 22, 2024SaveLearn
Extraction of initial dynamics of magnetic micro-convectionComplex fluid flows are important in many real-life problems. For an in-depth understanding, new and more elaborate methods of flow description are necessary. Often experimental and numerical data…Mārtiņš Klevs, Andrejs Tatuļčenkovs, Lāsma Puķina-Slava et al.·Oct 21, 2024SaveLearn
An analytical model of tornado generationA new analytical model for the generation of axisymmetric tornado-type vortices has been developed. A solution to the nonlinear equation for the stream function in an unstable stratified atmosphere…S. N. Artekha·Oct 21, 2024SaveLearn
Synergy of turbulence and thermo-diffusive effects on the intermittent boundary-layer flashback of swirling flamesWe simulated the intermittent boundary-layer flashback (BLF) of hydrogen-enriched swirling flames using large-eddy simulation (LES) with the flame-surface-density (FSD) method. Three cases of…Shiming Zhang, Zhen Lu, Yue Yang·Oct 21, 2024SaveLearn
Out-of-equilibrium fluxes shape the self-organization of locally-interacting turbulenceWe study the self-organization of turbulence in a geophysically motivated two-dimensional fluid with local interactions. Using simulations and theory, we show that the out-of-equilibrium flux to…Anton Svirsky, Anna Frishman·Oct 21, 2024SaveLearn
Modelling surface waves on shear current with quadratic depth-dependenceThe currents in the ocean have a serious impact on ocean dynamics, since they affect the transport of mass and thus the distribution of salinity, nutrients and pollutants. In many physically…Conor Curtin, Rossen Ivanov·Oct 19, 2024SaveLearn
Enstrophy variations in the collapsing process of point vorticesWe investigate enstrophy variations by collapse of point vortices in an inviscid flow and, in particular, focus on the enstrophy dissipation that is a significant property characterizing 2D turbulent…Takeshi Gotoda·Oct 19, 2024SaveLearn
Nonlocality of the slip length operator for scalar and momentum transport in turbulent flow over superhydrophobic surfacesSuperhydrophobic surfaces (SHS) are textured hydrophobic surfaces which have the ability to trap air pockets when immersed in water. This can result in significant drag reduction, due to…Kimberly Liu, Ali Mani·Oct 19, 2024SaveLearn
Noise-expansion cascade: an origin of randomness of turbulenceRandomness is one of the most important characteristics of turbulence, but its origin remains an open question. By means of a ``thought experiment'' via several clean numerical experiments based on…Shijun Liao, Shijie Qin·Oct 19, 2024SaveLearn
Variable-property and intrinsic compressibility corrections for turbulence models using near-wall scaling theoriesWe introduce a novel approach to derive compressibility corrections for Reynolds-averaged Navier-Stokes (RANS) models. Using this approach, we derive variable-property corrections for wall-bounded…Asif Manzoor Hasan, Alex Jose Elias, Florian Menter et al.·Oct 18, 2024SaveLearn
Interactions between the near-wall turbulent structures and heavy particles in compressible turbulent boundary layersIn the present study, we conduct direct numerical simulations to investigate the near-wall dynamics of compressible turbulent boundary layers at the free-stream Mach number of 6 laden with heavy…Ming Yu, Lihao Zhao, Yibin Du et al.·Oct 18, 2024SaveLearn
Dissecting inertial clustering and sling dynamics in high-Reynolds number particle-laden turbulenceIn this work, we aim to deepen the understanding of inertial clustering and the role of sling events in high-Reynolds number (Re) particle-laden turbulence. To this end, we perform one-way coupled…Lukas A. Codispoti, Daniel W. Meyer, Patrick Jenny·Oct 18, 2024SaveLearn
Wall-damped Faraday waves in horizontally oscillating two-layer fluid flowsWe study experimentally the onset of Faraday waves near the endwalls of rectangular vessel containing two stably-stratified fluid layers, subject to horizontal oscillations. These subharmonic waves…Linfeng Piao, Anne Juel·Oct 18, 2024SaveLearn