Early Stages of Drop CoalescenceDespite the large body of research on coalescence, firm agreement between experiment, theory, and computation has not been established for the very first moments following the initial contact of two…Antoine Deblais, Kaili Xie, Peter Lewin-Jones et al.·Feb 1, 2024SaveLearn
A two-phase Volume of Fluid approach to model rigid-perfectly plastic granular materialsGranular flow problems characterized by large deformations are widespread in various applications, including coastal and geotechnical engineering. The paper deals with the application of a…Wibke Düsterhöft-Wriggers, Svenja Schubert, Thomas Rung·Feb 1, 2024SaveLearn
Inertia and slip effects on the instability of a liquid film coated on a fibreTo investigate the influence of inertia and slip on the instability of a liquid film on a fibre, a theoretical framework based on the axisymmetric Navier-Stokes equations is proposed via linear…Chengxi Zhao, Ran Qiao, Kai Mu et al.·Feb 1, 2024SaveLearn
Inertial particle focusing in fluid flow through spiral ducts: dynamics, tipping phenomena and particle separationSmall finite-size particles suspended in fluid flow through an enclosed curved duct can focus to points or periodic orbits in the two-dimensional duct cross-section. This particle focusing is due to…Rahil N. Valani, Brendan Harding, Yvonne M. Stokes·Feb 1, 2024SaveLearn
Unsteady Three-dimensional Rotational FlameletA new unsteady flamelet model is developed to be used for sub-grid modeling and coupling with the resolved flow description for turbulent combustion. Difficulties with prior unsteady flamelet models…William A. Sirignano·Jan 31, 2024SaveLearn
LEMDA: A Lagrangian-Eulerian Multiscale Data Assimilation FrameworkLagrangian trajectories are widely used as observations for recovering the underlying flow field via Lagrangian data assimilation (DA). However, the strong nonlinearity in the observational process…Quanling Deng, Nan Chen, Samuel N. Stechmann et al.·Jan 31, 2024SaveLearn
Experimental study of three-dimensional turbulence under a free surfaceIn many environmental flows, an air-water free surface interacts with a turbulent flow in the water phase. To mimic this situation, we propose an original experimental setup, based on the Randomly…Timothée Jamin, Michael Berhanu, Eric Falcon·Jan 31, 2024SaveLearn
Spreading and engulfment of a viscoelastic film onto a Newtonian dropletWe use the conservative phase-field lattice Boltzmann method to investigate the dynamics when a Newtonian droplet comes in contact with an immiscible viscoelastic liquid film. The dynamics of the…Chunheng Zhao, Taehun Lee, Andreas Carlson·Jan 31, 2024SaveLearn
Numerical insights from population balance model into the distribution of bitumen residues in industrial horizontal pipes during the hydrotransport of oil sands tailingsPipeline transportation is a vital method for conveying crushed oil sand ores and tailings in the oil sands industry. This study focuses on enhancing economic benefits by exploring the separation of…Somasekhara Goud Sontti, Xuehua Zhang·Jan 31, 2024SaveLearn
Projection-based reduced order modeling and data-driven artificial viscosity closures for incompressible fluid flowsProjection-based reduced order models rely on offline-online model decomposition, where the data-based energetic spatial basis is used in the expensive offline stage to obtain equations of reduced…Aviral Prakash, Yongjie Jessica Zhang·Jan 30, 2024SaveLearn
Average turbulence dynamics from a one-parameter kinetic theoryWe show theoretically that the mean turbulent dynamics can be described by a kinetic theory representation with a single free relaxation time that depends on space and time. A proper kinetic equation…Hudong Chen, Ilya Staroselsky, Katepalli R. Sreenivasan et al.·Jan 30, 2024SaveLearn
The effect of surface topography on benthic boundary layer flow: implications for marine larval transport and settlementThe effect of substrate topography on the settlement of coral larvae in wave-driven oscillatory flow is investigated using computational fluid dynamics coupled to a 2D agent-based simulation of…Daniel Gysbers, Mark A. Levenstein, Gabriel Juarez·Jan 30, 2024SaveLearn
Volumetric Lattice Boltzmann Models in General Curvilinear Coordinates: Theoretical FormulationA theoretical formulation of lattice Boltzmann models on a general curvilinear coordinate system is presented. It is based on a volumetric representation so that mass and momentum are exactly…Hudong Chen·Jan 30, 2024SaveLearn
High-order thread-safe lattice Boltzmann model for HPC turbulent flow simulationsWe present a highly-optimized thread-safe lattice Boltzmann model in which the non-equilibrium part of the distribution function is locally reconstructed via recursivity of Hermite polynomials. Such…Andrea Montessori, Michele La Rocca, Giorgio Amati et al.·Jan 30, 2024SaveLearn
Influence of the Reynolds number from Reτ= 150 to 210 on size-dependent bipolar chargingWe recently found wall-bounded turbulence to suppress and control bipolar triboelectric charging of particles of identical material. This control is due to fluid modifying the motion of light…Simon Jantač, Holger Grosshans·Jan 30, 2024SaveLearn
A Framework of Data Assimilation for Wind Flow Fields by Physics-informed Neural NetworksVarious types of measurement techniques, such as Light Detection and Ranging (LiDAR) devices, anemometers, and wind vanes, are extensively utilized in wind energy to characterize the inflow. However,…Chang Yan, Shengfeng Xu, Zhenxu Sun et al.·Jan 30, 2024SaveLearn
Bubble rising near a vertical wall: experimental characterization of paths and velocityThe trajectories of a single bubble rising in the vicinity of a vertical solid wall are experimentally investigated. Distinct initial wall-bubble distances are considered for three different bubble…Cecilia Estepa-Cantero, Carlos Martínez-Bazán, Rocío Bolaños-Jiménez·Jan 30, 2024SaveLearn
Carrier-phase DNS of ignition and combustion of iron particles in a turbulent mixing layerThree-dimensional CP-DNS of reacting iron particle dust clouds in a turbulent mixing layer are conducted. The simulation approach considers the Eulerian transport equations for the reacting gas phase…Tien Duc Luu, Ali Shamooni, Andreas Kronenburg et al.·Jan 30, 2024SaveLearn
Linear stability analysis of compressible boundary layer over an insulated wall: Existence of multiple new unstable modes for Mach number beyond 3Here, we investigate the linear spatial stability of a parallel two-dimensional compressible boundary layer on an adiabatic plate by considering 2D and 3D disturbances. We employ the Compound Matrix…Neha Chaturvedi, Swagata Bhaumik, Rituparn Somvanshi·Jan 30, 2024SaveLearn
Multi-Objective Aerodynamic Optimization of External Compression Supersonic Intake using Kriging/MOGAA formal optimization procedure is reported for an external-compression supersonic intake with the twin objectives of maximizing the total pressure recovery while simultaneously minimizing the intake…JPS Sandhu, M Bhardwaj, N Ananthkrishnan et al.·Jan 30, 2024SaveLearn
Conformal invariance in water-wave turbulenceWe experimentally investigate the statistics of zero-height isolines in gravity wave turbulence as physical candidates for conformal invariant curves. We present direct evidence that they can be…M. Noseda, P. J. Cobelli·Jan 29, 2024SaveLearn
Instantons, fluctuations and singularities in the supercritical stochastic nonlinear Schroedinger equationRecently, Josserand et al. proposed a stochastic nonlinear Schroedinger model for finite-time singularity-mediated turbulence [Phys. Rev. Fluids 5, 054607 (2020)]. Here, we use instanton calculus to…Sumeja Burekovic, Tobias Schaefer, Rainer Grauer·Jan 29, 2024SaveLearn
Using theory and experiments of spheres moving near boundaries to optimize the method of images for regularized StokesletsThe general system of images for regularized Stokeslets (GSIRS) developed by Cortez and Varela (2015) is used extensively to model Stokes flow phenomena such as microorganisms swimming near a…Hoa Nguyen, Amelia Gibbs, Frank Healy et al.·Jan 29, 2024SaveLearn
Rapidly rotating radiatively driven convection: experimental and numerical validation of the `geostrophic turbulence' scaling predictionsWe experimentally and numerically characterize rapidly rotating radiatively driven thermal convection, beyond the sole heat transport measurements reported in Bouillaut et al. (2021). Based on a…Gabriel Hadjerci, Vincent Bouillaut, Benjamin Miquel et al.·Jan 29, 2024SaveLearn
Analysis of the spread of SARS-CoV-2 in a hospital isolation room using CFD and Lagrangian Coherent StructuresThis research paper presents an analysis of the propagation of the SARS-CoV-2, or other similar pathogens, in a hospital isolation room using computational fluid dynamics (CFD) and Lagrangian…Narjisse Amahjour, Guillermo Garcia-Sanchez, Makrina Agaoglou et al.·Jan 29, 2024SaveLearn