One-Dimensional, One-Phase and Two-Phase Eulerian Explicit Shock Tube Simulation CodeIn this work, a one-dimensional simulation code was developed for both single-phase and two-phase systems, focusing on time-dependent Euler equations for gas and particles. These equations,…M. Giselle Fernández-Godino·Jun 20, 2024SaveLearn
Multi-objective optimization of the magnetic wiping process in dip-coatingElectromagnetic wiping systems allow to pre-meter the coating thickness of the liquid metal on a moving substrate. These systems have the potential to provide a more uniform coating and significantly…Fabio Pino, Benoit Scheid, Miguel Alfonso Mendez·Jun 20, 2024SaveLearn
U-shaped disks in Stokes flow: Chiral sedimentation of a non-chiral particleWe study the sedimentation of U-shaped circular disks in the Stokes limit of vanishing inertia. We simulate the flow past such disks using a finite-element-based solution of the 3D Stokes equations,…Christian Vaquero-Stainer, Tymoteusz Miara, Anne Juel et al.·Jun 19, 2024SaveLearn
Poiseuille flow for a simplified pseudoplastic rheologyPoiseuille flow in cylindrical and planar geometries with a simplified, pseudoplastic (shear thinning) rheology characterized by constant viscosity plateaus above and below a transition strain rate…Chris Reese·Jun 19, 2024SaveLearn
A fully observer-covariant formulation of the fluid dynamics of simple fluids: derivation, simple examples and a generalized Orr-Sommerfeld equationWe present a formalism to describe the motion of a fluid that is fully covariant with respect to arbitrary observers. To achieve full covariance, we write prognostic equations for quantities that…Alberto Scotti·Jun 19, 2024SaveLearn
Effects of settling on inertial particle slip velocity statistics in wall bounded flowsDeveloping reduced order models for the transport of solid particles in turbulence typically requires a statistical description of the particle-turbulence interactions. In this work, we utilize a…Andrew P. Grace, David Richter, Tim Berk et al.·Jun 19, 2024SaveLearn
The influence of flame-pressure waves collisions on the development and evolution of tulip flamesThe effects of pressure waves-flame collisions and tube aspect ratio on flame evolution and the formation of tulip and distorted tulip flames were investigated using numerical simulations of the…Chengeng Qian, Mikhail A. Liberman·Jun 19, 2024SaveLearn
Linear stability of turbulent channel flow with one-point closureFor low enough flow rates, turbulent channel flow displays spatial modulations of large wavelengths. This phenomenon has recently been interpreted as a linear instability of the turbulent flow. We…P. V. Kashyap, Y. Duguet, O. Dauchot·Jun 19, 2024SaveLearn
A hybrid reduced-order model for segregated fluid-structure interaction solvers in an ALE approach at high Reynolds numberThis study introduces a first step for constructing a hybrid reduced-order models (ROMs) for segregated fluid-structure interaction in an Arbitrary Lagrangian-Eulerian (ALE) approach at a high…Valentin Nkana Ngan, Giovanni Stabile, Andrea Mola et al.·Jun 18, 2024SaveLearn
Recovering particle velocity and size distributions in ejecta with Photon Doppler VelocimetryWhen a solid metal is struck, its free surface can eject fast and fine particles. Despite the many diagnostics that have been implemented to measure the mass, size, velocity or temperature of ejecta,…J. A. Don Jayamanne, R. Outerovitch, F. Ballanger et al.·Jun 18, 2024SaveLearn
Full rotational dynamics of plastic microfibers in turbulenceThe motion, settling, and dispersion of microplastics in the ocean are determined by their rotational dynamics. We present experiments on elongated, large aspect ratio, and mildly curved plastic…Vlad Giurgiu, Giuseppe Carlo Alp Caridi, Marco De Paoli et al.·Jun 18, 2024SaveLearn
An Introduction to Computational Fluctuating HydrodynamicsThese notes are an introduction to fluctuating hydrodynamics (FHD) and the formulation of numerical schemes for the resulting stochastic partial differential equations (PDEs). Fluctuating…Alejandro L. Garcia, John B. Bell, Andrew Nonaka et al.·Jun 18, 2024SaveLearn
Coupled heat and fluid transport in pulled extrusion of cylindersIn the fabrication of optical fibres, the viscosity of the glass varies dramatically with temperature so that heat transfer plays an important role in the deformation of the fibre geometry.…Eunice B. Yuwono, Yvonne M. Stokes, Hayden Tronnolone et al.·Jun 18, 2024SaveLearn
Morphodynamics of melting ice over turbulent warm water streamsWe investigate the morphodynamics of an ice layer over a turbulent stream of warm water using numerical simulations. At low water speeds, characteristic streamwise undulations appear, which can be…Diego Perissutti, Cristian Marchioli, Alfredo Soldati·Jun 17, 2024SaveLearn
A Computational Study of Bubble Formation from an Orifice Submerged in Liquid with Constant Gas FlowThe process of bubble formation from an orifice submerged in liquid with constant gas flow is studied by numerical simulations using an OpenFOAM volume-of-fluid solver named interIsoFoam. The…James Q. Feng·Jun 17, 2024SaveLearn
Wake dynamics of wind turbines in unsteady streamwise flow conditionsThe unsteady flow physics of wind-turbine wakes under dynamic forcing conditions are critical to the modeling and control of wind farms for optimal power density. Unsteady forcing in the streamwise…Nathaniel J. Wei, Adnan El Makdah, JiaCheng Hu et al.·Jun 17, 2024SaveLearn
Realizability-Informed Machine Learning for Turbulence Anisotropy MappingsWithin the context of machine learning-based closure mappings for RANS turbulence modelling, physical realizability is often enforced using ad-hoc postprocessing of the predicted anisotropy tensor.…Ryley McConkey, Nikhila Kalia, Eugene Yee et al.·Jun 17, 2024SaveLearn
Anomalous mass diffusion in a binary mixture and Rayleigh-Benard instabilityThe onset of the Rayleigh-Benard instability in a horizontal fluid layer is investigated by assuming the fluid as a binary mixture and the concentration buoyancy as the driving force. The focus of…A. Barletta, B. Straughan·Jun 17, 2024SaveLearn
Freely Decaying Saffman Turbulence Experimentally Generated by Magnetic StirrersWe investigate experimentally the decay of three-dimensional hydrodynamic turbulence, initially generated by the erratic motions of centimeter-size magnetic stirrers in a closed container. Such…Jean-Baptiste Gorce, Eric Falcon·Jun 17, 2024SaveLearn
Unfolding Time: Generative Modeling for Turbulent Flows in 4DA recent study in turbulent flow simulation demonstrated the potential of generative diffusion models for fast 3D surrogate modeling. This approach eliminates the need for specifying initial states…Abdullah Saydemir, Marten Lienen, Stephan Günnemann·Jun 17, 2024SaveLearn
Laminar forced convection characteristics in a round microchannel with shape uncertainty: effect of wall slipThe shape of a microchannel cross-section is usually affected by a significant uncertainty due to the small hydraulic diameter. Such an uncertainty is indeed present at any scale, but is amplified in…L. A. Sphaier, A. Barletta, M. Celli et al.·Jun 17, 2024SaveLearn
Shape uncertainty analysis of laminar forced convection in a round microchannel with viscous dissipationThe shape of a microchannel is usually affected by a significant uncertainty due to the small size of the cross-section, comparable with the typical wall-roughness length scale. Such an uncertainty…A. Barletta, M. Celli, L. A. Sphaier et al.·Jun 17, 2024SaveLearn
A cascade model for the discontinuous absorbing phase transition between turbulent and laminar flowsWe introduce a minimal model of energy transfer through scales to describe, at a qualitative level, the subcritical transition between laminar and turbulent flows, viewed in a statistical physics…Eric Bertin, Alex Andrix, Gaël Le Godais·Jun 17, 2024SaveLearn
Charged drop impinging on particles dispersed over a metallic plate: A method of particle cleaningAn electric field applied to a droplet impinging on a hydrophobic surface has an extensive variety of applications, including ant-icing, heat transfer enhancement, self-cleaning, droplet…D. Biswal, S. K. Saroj, B. Ray et al.·Jun 16, 2024SaveLearn
Internally heated convection with rotation: bounds on heat transportThis work investigates heat transport in rotating internally heated convection, for a horizontally periodic fluid between parallel plates under no-slip and isothermal boundary conditions. The main…Ali Arslan·Jun 16, 2024SaveLearn