The role of magnetic boundaries in kinematic and self-consistent magnetohydrodynamic simulations of precession-driven dynamo action in a closed cylinderWe numerically examine dynamo action generated by a flow of an electrically conducting fluid in a precessing cylindrical cavity. We compare a simplified kinematic approach based on the solution of…André Giesecke, Mike Wilbert, Ján Šimkanin et al.·Oct 18, 2024SaveLearn
Machine-learning-assisted Blending of Data-Driven Turbulence ModelsWe present a machine learning-based framework for blending data-driven turbulent closures in the Reynolds-Averaged Navier-Stokes (RANS) equations, aimed at improving their generalizability across…Mourad Oulghelou, Soufiane Cherroud, Xavier Merle et al.·Oct 18, 2024SaveLearn
Bubble curtains for noise mitigation: one vs. twoBubble curtains are widely used to protect marine life from exposure to noise during offshore construction. However, operating a bubble curtain is costly. Therefore optimizing the acoustic effect of…Simon Beelen, Marten Nijhof, Christ de Jong et al.·Oct 18, 2024SaveLearn
Symmetry breaking and nonlinear transformation of two-layer eastward propagating dipolesWe study the evolution of eastward propagating dipoles (modons) in a two-layer quasi-geostrophic β-plane model using high-resolution numerical simulations. Various combinations of background…Matthew. N. Crowe, Georgi. G. Sutyrin·Oct 18, 2024SaveLearn
Proppant transport at the intersection of coal cleats and hydraulic fracturesThis work is the first computational study of proppant leak-off through coal cleats that accounts for proppant retention in cleats, occlusion formation at cleat entrances, the resulting control of…Nathan J. Di Vaira, Lukasz Laniewski-Wollk, Raymond L. Johnson et al.·Oct 18, 2024SaveLearn
Deep reinforcement learning for the management of the wall regeneration cycle in wall-bounded turbulent flowsThe wall cycle in wall-bounded turbulent flows is a complex turbulence regeneration mechanism that remains not fully understood. This study explores the potential of deep reinforcement learning (DRL)…Giorgio Maria Cavallazzi, Luca Guastoni, Ricardo Vinuesa et al.·Oct 18, 2024SaveLearn
Effect of ozone sensitization on the reflection patterns and stabilization of standing detonation waves induced by curved rampsStanding detonation engines are a promising detonation-based propulsion technology. The most commonly studied standing detonation configuration involves a straight-sided wedge that induces an oblique…Eric J. Ching, Ryan F. Johnson·Oct 17, 2024SaveLearn
Conservative discontinuous Galerkin method for supercritical, real-fluid flowsThis paper presents a conservative discontinuous Galerkin method for the simulation of supercritical and transcritical real-fluid flows without phase separation. A well-known issue associated with…Eric J. Ching, Ryan F. Johnson·Oct 17, 2024SaveLearn
DamFormer: Generalizing Morphologies in Dam Break Simulations Using Transformer ModelThe interaction of waves with structural barriers such as dams breaking plays a critical role in flood defense and tsunami disasters. In this work, we explore the dynamic changes in wave surfaces…Zhaoyang Mul, Aoming Liang, Mingming Ge et al.·Oct 17, 2024SaveLearn
Quantum-Inspired Stochastic Modeling and Regularity in Turbulent Fluid DynamicsThis paper presents an innovative framework for analyzing the regularity of solutions to the stochastic Navier-Stokes equations by integrating Sobolev-Besov hybrid spaces with fractional operators…Rômulo Damasclin Chaves dos Santos, Jorge Henrique de Oliveira Sales, Erickson F. M. S. Silva·Oct 17, 2024SaveLearn
How thermally-induced secondary motions in offshore hybrid wind-solar farms improve wind-farm efficiencyIntegrating floating photovoltaic (FPV) installations into offshore wind farms has been proposed as a major opportunity to scale up offshore renewable energy generation. The interaction between these…Thijs Bon, Vincent Van Craenenbroeck, Johan Meyers·Oct 16, 2024SaveLearn
Revisiting the hydrodynamic modulation of short surface waves by longer wavesHydrodynamic modulation of short ocean surface waves by longer ambient waves significantly influences remote sensing, interpretation of in situ wave measurements, and numerical wave forecasting. This…Milan Curcic·Oct 16, 2024SaveLearn
Measuring time-resolved heat transfer fluctuations on a heated-thin foil in a turbulent channel airflowWe present an experimental setup to perform time-resolved convective heat transfer measurements in a turbulent channel flow with air as the working fluid. We employ a heated thin foil coupled with…Antonio Cuéllar, Enrico Amico, Jacopo Serpieri et al.·Oct 16, 2024SaveLearn
Multi-Particle Dispersion in Rotating-Stratified Turbulent FlowsThe transport of matter by turbulent flows plays an important role, in particular in a geophysical context. Here, we study the relative movement of groups of two (pairs) and four (tetrahedra)…Sebastian Gallon, Fabio Feraco, Raffaele Marino et al.·Oct 16, 2024SaveLearn
Research on the identification of the two-phase flow pattern of gas-liquid in a vertical rising tube based on BP neural networksResearch on the identification of the two-phase flow pattern of gas-liquid in a vertical rising pipe is of great significance for improving the production capacity and production efficiency of the…Xiaojun Zhang, Shijiao Liu, Jiayue Qian et al.·Oct 16, 2024SaveLearn
On the parameters of common settling velocity models for porous sediment aggregatesThe settling behavior of sediment aggregates is a critical factor influencing the transport of fine-grained sediments in riverine and marine environments. Due to the small size and fragile structure…Alexander Metelkin, Bernhard Vowinckel·Oct 16, 2024SaveLearn
Enhancing generalizability of machine learning general effective-viscosity turbulence model via tensor basis normalizationWith the rapid advancement of machine learning techniques, the development and study of machine learning turbulence models have become increasingly prevalent. As a critical component of turbulence…Ziqi Ji, Penghao Duan, Gang Du·Oct 16, 2024SaveLearn
Fluid Dynamics and Passive Scalar Transport Driven by Non-Uniform Tumbling of a Prolate Spheroid in Simple Shear FlowUsing high-fidelity numerical simulations based on a lattice Boltzmann framework, the advection-enhanced transport of a passive scalar from a prolate spheroid in simple shear flow has been thoroughly…Yanxing Wang, Hui Wan, Tie Wei et al.·Oct 16, 2024SaveLearn
Early turbulence in viscoelastic flow past a periodic cylinder arrayEarly turbulence in periodic cylinder arrays is of particular interest in many practical applications to enhance mixing and material/heat exchange. In this study, we reveal a new early transition…Lu Zhu, Rich R. Kerswell·Oct 15, 2024SaveLearn
Modal analysis of blood flows in saccular aneurysmsCurrently, it is challenging to investigate aneurismal hemodynamics based on current in-vivo data such as Magnetic Resonance Imaging or Computed Tomography due to the limitations in both spatial and…Thien-Tam Nguyen, Davina Kasperski, Phat Kim Huynh et al.·Oct 15, 2024SaveLearn
Wave energy converters as offshore wind farm guardians: a pathway to resilient ocean systemsMaximizing the durability and reliability of offshore wind farms is essential for the clean energy transition. In this work, we demonstrate how wave energy converter (WEC) farms can shelter offshore…Olivia Vitale, Maha Haji·Oct 15, 2024SaveLearn
A homogenised model for dispersive transport and sorption in a heterogeneous porous mediumWhen a fluid carrying a passive solute flows quickly through porous media, three key macroscale transport mechanisms occur. These mechanisms are diffusion, advection and dispersion, all of which…Lucy C Auton, Mohit P. Dalwadi, Ian M. Griffiths·Oct 15, 2024SaveLearn
AI-driven random walk simulations of viscophoresis and visco-diffusiophoretic particle trappingViscophoresis refers to the transport of suspended nanoparticles driven by a steep viscosity gradient. This work investigates this new transport effect using a random walk simulation. By modelling…Klaus Mathwig·Oct 15, 2024SaveLearn
Comprehensive linear stability analysis for intrinsic instabilities in premixed ammonia/hydrogen/air flamesTwo-dimensional direct numerical simulations of planar laminar premixed ammonia/hydrogen/air flames are conducted for a wide range of equivalence ratios, hydrogen ( H2) fractions in the fuel…Terence Lehmann, Lukas Berger, Thomas L. Howarth et al.·Oct 15, 2024SaveLearn
Hydrodynamic coupling of a cilia--mucus system in Herschel--Bulkley flowsThe yield stress and shear thinning properties of mucus are identified as critical for ciliary coordination and mucus transport in human airways. We use here numerical simulations to explore the…Q. Mao, Umberto d'Ortona, J. Favier·Oct 15, 2024SaveLearn