Improving the measurement of air-water flow properties using remote distance sensing technologyIn recent years, there has been an increasing research interest in the application of remote sensing technology to highly aerated flows, which is because this technology holds the ultimate promise to…Matthias Kramer, Daniel B. Bung·Aug 16, 2024SaveLearn
A versatile multilayer liquid-liquid encapsulation techniqueHypothesis: Generating multi-layer cargo using conventional methods is challenging. We hypothesize that incorporating a Y-junction compound droplet generator to encase a target core inside a second…Utsab Banerjee, Sirshendu Misra, Sushanta K. Mitra·Aug 16, 2024SaveLearn
Interface Dynamics at a Four-fluid Interface during Droplet Impact on a Two-Fluid SystemWe investigate the interfacial dynamics involved in the impact of a droplet on a liquid-liquid system, which involves the impingement of an immiscible core liquid drop from a vertical separation onto…Akash Chowdhury, Sirshendu Misra, Sushanta K. Mitra·Aug 16, 2024SaveLearn
High-speed micro-actuation in a supersonic dual-stream jet flowSupersonic shear layers experience instabilities that generate significant adverse effects; in complex configurations, these instabilities have global impacts as they foster compounding complications…Melissa Yeung, Datta V. Gaitonde, Yiyang Sun·Aug 15, 2024SaveLearn
Numerical Simulations of Spatiotemporal Instabilities in Discontinuous Shear Thickening FluidsDiscontinuous Shear Thickening (DST) fluids exhibit unique instability properties in a wide range of flow conditions. We present numerical simulations of a scalar model for DST fluids in a planar…Peter Angerman, Bjornar Sandnes, Ryohei Seto et al.·Aug 15, 2024SaveLearn
A modern approach to the Kelvin-Helmholtz instability on circular vortex sheetsWe represent the outermost shear interface of an eddy by a circular vortex sheet in two dimensions, and provide a new proof of linear instability via the Birkhoff-Rott equation. Like planar vortex…Galen Wilcox, Ryan Murray·Aug 15, 2024SaveLearn
Multiscale simulation of coexisting turbulent and rarefied gas flowsSimulating complex gas flows from turbulent to rarefied regimes is a long-standing challenge, since turbulence and rarefied flow represent contrasting extremes of computational aerodynamics. We…Songyan Tian, Lei Wu·Aug 15, 2024SaveLearn
Transport and mixing in control volumes through the lens of probabilityA partial differential equation governing the global evolution of the joint probability distribution of an arbitrary number of local flow observations, drawn randomly from a control volume, is…John Craske, Paul Mannix·Aug 15, 2024SaveLearn
Experimental Insights into Droplet Behavior on Van der Waals and Non-Van der Waals Liquid-Impregnated SurfacesDroplet impact is a fascinating phenomenon that occurs when a liquid droplet collides with a surface. It is not only a fundamental area of scientific inquiry but also has practical implications…Shubham Ganar, Arindam Das·Aug 15, 2024SaveLearn
Hydrodynamics of Semi-Submersible Vehicle Hulls with Variable Height-Width Ratio in Deep and Shallow WaterSemi-submersible vehicles keep most of their hulls underwater while maintaining a small platform above the water surface. These craft can find use for both naval operations and civil transportation…Konstantin I. Matveev·Aug 14, 2024SaveLearn
Towards large eddy simulations of premixed turbulent flames without a combustion modelThe paper aims at assessing a hypothesis that resolution required to evaluate fuel consumption and heat release rates by directly (i.e., without a subgrid model of unresolved influence of small-scale…Andrei N. Lipatnikov·Aug 14, 2024SaveLearn
Barchan-barchan dune repulsion investigated at the grain scaleBarchans are eolian dunes of crescent shape found on Earth, Mars and other celestial bodies. Among the different types of barchan-barchan interaction, there is one, known as chasing, in which the…Nicolao Cerqueira Lima, Willian Righi Assis, Carlos Azael Alvarez et al.·Aug 14, 2024SaveLearn
Mixing of active scalars due to random shock waves in two dimensionsIn this work, we investigate the mixing of active scalars in two dimensions by the stirring action of stochastically generated shock waves. We use direct numerical simulations (DNS) of the…Joaquim P. Jossy, Prateek Gupta·Aug 14, 2024SaveLearn
Pressure-Induced Separation of a Laminar Boundary Layer over a Partially-Slip WallThe characteristics of pressure-induced laminar separation bubbles (LSBs) over a partially-slip wall, compared with that over a canonical no-slip wall, are studied using direct numerical simulation.…Benjamin Kellum Cooper, Benjamin S. Savino, John Marshall Cooper et al.·Aug 13, 2024SaveLearn
A three-layer model for the flow of particulate suspensions driven by sedimentationWe introduce a system of shallow water-type equations to model laboratory experiments of particle-laden flows. We explore homogeneous liquid-solid suspensions of fine, non-cohesive, monodisperse…Andrea Bondesan, Laurence Girolami, François James et al.·Aug 13, 2024SaveLearn
High-speed ditching of double curvature specimens with cavitation and ventilationThe water entry at high horizontal speed of double-curvature specimens, reproducing the rear part of the fuselage that first gets in contact with the water during aircraft ditching, is investigated…Emanuele Spinosa, Silvano Grizzi, Alessandro Iafrati·Aug 13, 2024SaveLearn
Convolutional Neural Networks For Turbulent Model Uncertainty QuantificationComplex turbulent flow simulations are an integral aspect of the engineering design process. The mainstay of these simulations is represented by eddy viscosity based turbulence models. Eddy viscosity…Minghan Chu, Weicheng Qian·Aug 13, 2024SaveLearn
Quantifying the checkerboard problem to reduce numerical dissipationThis work provides a comprehensive exploration of various methods in solving incompressible flows using a projection method, and their relation to the occurrence and management of checkerboard…Johannes Arend Hopman, Daniel Santos, Àdel Alsalti-Baldellou et al.·Aug 13, 2024SaveLearn
Buoyancy induced motion of a Newtonian drop in elastoviscoplastic materialsWe investigate theoretically the buoyancy-driven motion of a viscous drop in a yield-stress material, incorporating elastic effects represented by the Saramito-Herschel-Bulkley constitutive equation.…Giancarlo Esposito, Yannis Dimakopoulos, John Tsamopoulos·Aug 13, 2024SaveLearn
Intricate Evaporation Dynamics in Different Multi-Droplet ConfigurationsWe experimentally investigate the evaporation dynamics of an array of sessile droplets arranged in different configurations. Utilizing a customized goniometer, we capture side and top view profiles…Hari Govindha A., Saravanan Balusamy, Sayak Banerjee et al.·Aug 13, 2024SaveLearn
Linear stability analysis of a vertical liquid film over a moving substrateThe stability of liquid film flows are important in many industrial applications. In the dip-coating process, a liquid film is formed over a substrate extracted at a constant speed from a liquid…Fabio Pino, Miguel Alfonso Mendez, Benoit Scheid·Aug 13, 2024SaveLearn
Absolute and convective instabilities in a liquid film over a substrate moving against gravityThe drag-out problem for small Reynolds numbers ( Re) admits the Landau-Levich-Derjaguin (LLD) solution for small capillary numbers ( Ca), and Derjaguin's solution for large Ca.…Fabio Pino, Miguel Alfonso Mendez, Benoit Scheid·Aug 13, 2024SaveLearn
Generalized incompressible fluid dynamical system interpolating between the Navier-Stokes and Burgers equations in two dimensionsWe propose a set of generalized incompressible fluid dynamical equations, which interpolates between the Burgers and Navier-Stokes equations in two dimensions and study their properties theoretically…Koji Ohkitani·Aug 12, 2024SaveLearn
Separation of a Laminar Boundary Layer Subjected to Pressure Gradients with Spanwise VariationsThe characteristics of three-dimensional laminar separation bubbles (LSBs), compared with their quasi-two-dimensional counterparts, are studied using direct numerical simulation. A three-dimensional…John Marshall Cooper, Benjamin S. Savino, Benjamin Kellum Cooper et al.·Aug 12, 2024SaveLearn
Droplets in Acoustic Fields: A Unified Theory from Migration to SplittingWe present a comprehensive theoretical framework governing the dynamics of droplets in acoustic fields, applicable to all droplet sizes, from the Rayleigh limit (D<<lambda) and beyond. Our theory…Jeyapradhap Thirisangu, Varun Kumar Rajendran, Snekan Selvakannan et al.·Aug 12, 2024SaveLearn