Penetrative rotating magnetoconvection subject to lateral variations in temperature gradientsConvection-driven flows in planetary interiors exhibit rich dynamics owing to multiple spatio-temporally varying forcing conditions and physical constraints. In particular, the churning of liquid…Tirtharaj Barman, Swarandeep Sahoo·Dec 6, 2024SaveLearn
Free-surface equatorial flows with surface tension in spherical coordinatesIn this paper, we determine an exact solution to the governing equations in spherical coordinates for an inviscid, incompressible fluid. This solution describes a steady, purely azimuthal equatorial…Andrei Stan·Dec 6, 2024SaveLearn
Chaotic mixing in plane Couette turbulenceLagrangian tracer particle trajectories for invariant solutions of the Navier-Stokes equations confined to the three-dimensional geometry of plane Couette flow are studied. Treating the Eulerian…John R. Elton, Predrag Cvitanović, Jonathan Halcrow et al.·Dec 6, 2024SaveLearn
Small-scale dynamics and structure of free-surface turbulenceThe dynamics of small-scale structures in free-surface turbulence is crucial to large-scale phenomena in natural and industrial environments. Here we conduct experiments on the quasi-flat free…Yinghe Qi, Yaxing Li, Filippo Coletti·Dec 5, 2024SaveLearn
On Deep-Learning-Based Closures for Algebraic Surrogate Models of Turbulent FlowsA deep-learning-based closure model to address energy loss in low-dimensional surrogate models based on proper-orthogonal-decomposition (POD) modes is introduced. Using a transformer-encoder block…Benet Eiximeno, Marcial Sanchís-Agudo, Arnau Miró et al.·Dec 5, 2024SaveLearn
Parametric Gaussian quadratures for Discrete Unified Gas Kinetic SchemeThe discrete unified gas kinetic scheme (DUGKS) has emerged as a promising Boltzmann solver capable of effectively capturing flow physics across all Knudsen numbers. However, simulating rarefied…Lu Wang, Hong Liang, Jiangrong Xu·Dec 5, 2024SaveLearn
Methodology for Online Estimation of Rheological Parameters in Polymer Melts Using Deep Learning and MicrofluidicsMicrofluidic devices are increasingly used in biological and chemical experiments due to their cost-effectiveness for rheological estimation in fluids. However, these devices often face challenges in…Juan Sandubete-López, José L. Risco-Martín, Alexander H. McMillan et al.·Dec 5, 2024SaveLearn
Global drag reduction and local flow statistics in Taylor-Couette turbulence with dilute polymer additivesWe present an experimental study on the drag reduction by polymers in Taylor-Couette turbulence at Reynolds numbers (Re) ranging from 4× 103 to 2.5× 104. In this Re regime, the…Yi-Bao Zhang, Yaning Fan, Jinghong Su et al.·Dec 5, 2024SaveLearn
Modeling wildfire dynamics through a physics-based approach incorporating fuel moisture and landscape heterogeneityAnthropogenic climate change has increased the probability, severity, and duration of heat waves and droughts, subsequently escalating the risk of wildfires. Mathematical and computational models can…Adrián Navas-Montilla, Cordula Reisch, Pablo Diaz et al.·Dec 5, 2024SaveLearn
Computing sessile droplet shapes on arbitrary surfaces with a new pairwise force smoothed particle hydrodynamics modelThe study of the shape of droplets on surfaces is an important problem in the physics of fluids and has applications in multiple industries, from agrichemical spraying to microfluidic devices.…Riley M Whebell, Timothy J Moroney, Ian W Turner et al.·Dec 5, 2024SaveLearn
Fluid-structure coupled simulation framework for lightweight explosion containment structures under large deformationsLightweight, single-use explosion containment structures provide an effective solution for neutralizing rogue explosives, combining affordability with ease of transport. This paper introduces a…Aditya Narkhede, Shafquat Islam, Xingsheng Sun et al.·Dec 5, 2024SaveLearn
Wall Slip Effects on Parameter Estimation for Integral-Type Viscoelastic Models: Insights from High Density Polyethylene and Thermoplastic Elastomer MeltsThis study explores the impact of wall slip on parameter estimation for integral-type non-linear viscoelastic models with time-strain separable memory functions, specifically examining high-density…Halil Gevgilili, Dilhan M. Kalyon·Dec 4, 2024SaveLearn
Restricted Euler dynamics in free-surface turbulenceThe small-scale velocity gradient is connected to fundamental properties of turbulence at the large scales. By neglecting the viscous and nonlocal pressure Hessian terms, we derive a restricted Euler…Yinghe Qi, Zhenwei Xu, Filippo Coletti·Dec 4, 2024SaveLearn
Stagnation points at grain contacts generate an elastic flow instability in 3D porous mediaMany environmental, energy, and industrial processes involve the flow of polymer solutions in three-dimensional (3D) porous media where fluid is confined to navigate through complex pore space…Emily Y. Chen, Christopher A. Browne, Simon J. Haward et al.·Dec 4, 2024SaveLearn
Characterization of local energy transfer in large-scale intermittent stratified turbulent flows via coarse grainingRecent studies based on simulations of the Boussinesq equations indicate that stratified turbulent flows can develop large-scale intermittency in the velocity and temperature fields, as detected in…Raffaello Foldes, Raffaele Marino, Silvio Sergio Cerri et al.·Dec 4, 2024SaveLearn
Free-form intelligent hydrodynamic metamaterials enabled by extreme anisotropyIntelligent metamaterials have attracted widespread research interest due to their self-adaptive capabilities and controllability. They hold great potential for advancing fluid control by providing…Fubao Yang, Yuhong Zhou, Peng Jin et al.·Dec 4, 2024SaveLearn
Turbulent boundary development over an air cavityThe turbulent boundary layer (TBL) development over an air cavity is experimentally studied using planar particle image velocimetry. The present flow, representative of those typically encountered in…Abhirath Anand, Lina Nikolaidou, Christian Poelma et al.·Dec 3, 2024SaveLearn
An extended analytical wake model and applications to yawed wind turbines in atmospheric boundary layers with different levels of stratification and veerAnalytical wake models provide a computationally efficient means to predict velocity distributions in wind turbine wakes in the atmospheric boundary layer (ABL). Most existing models are developed…Ghanesh Narasimhan, Dennice F. Gayme, Charles Meneveau·Dec 3, 2024SaveLearn
Universal energy cascade in critically balanced homogeneous ferrofluid turbulenceIn ferrofluids, the vorticity is balanced by the rate of particle rotation, which is known here as critical balance. The universal energy cascade is investigated for a stationary and non-stationary…Sukhdev Mouraya, Supratik Banerjee, Nandita Pan·Dec 2, 2024SaveLearn
Fingering instability of self-similar radial flow of miscible fluids in a Hele-Shaw cellThe linear stability of miscible displacement for radial source flow at infinite P\'eclet number in a Hele-Shaw cell is calculated theoretically. The axisymmetric self-similar flow is shown to be…John R. Lister, Tim-Frederik Dauck·Dec 2, 2024SaveLearn
Study on Dynamic Solidification of Digital Droplets and Random Behaviors during the Recalescence Process in a Spiral-shaped Milli-reactorIn this study, we designed a spiral-shaped milli-reactor with a T-junction microchannel to generate digital droplets for studying and observing the digital freezing process of droplets. During the…Yulin Wang, Z. L. Wang·Dec 2, 2024SaveLearn
Compression-thinning behavior of bubble suspensionsRheology of bubble suspensions is critical for the prediction and control of bubbly flows in a wide range of industrial processes. It is well-known that the bubble suspension exhibits a…Hu Sun, Qingfei Fu, Chiyu Xie et al.·Dec 2, 2024SaveLearn
Mean Mesh Adaptation for Efficient CFD Simulations with Operating Conditions VariabilityWhen numerically solving partial differential equations, for a given problem and operating condition, adaptive mesh refinement (AMR) has proven its efficiency to automatically build a discretization…Hugo Dornier, Olivier P Le Maître, Pietro M Congedo et al.·Dec 2, 2024SaveLearn
Centre mode instability of a dilute particle-laden swirling jet in a swirl flow combustorLinear stability of a locally parallel annular swirling jet laden with particles in a swirl flow combustor is considered. At low Stokes numbers, the eigenspectra of the particle-laden jet with…Srikumar Warrier, Gaurav Tomar·Dec 1, 2024SaveLearn
An AMReX-based Compressible Reacting Flow Solver for High-speed Reacting Flows relevant to Hypersonic PropulsionThis work presents a comprehensive framework for the efficient implementation of finite-volume-based reacting flow solvers, specifically tailored for high speed propulsion applications. Using the…Shivank Sharma, Ral Bielawski, Oliver Gibson et al.·Dec 1, 2024SaveLearn