Prediction of Multiscale Features Using Deep Learning-based Preconditioner-Solver Architecture for Darcy Equation in High-Contrast MediaModeling subsurface fluid flow in porous media is crucial for applications such as oil and gas exploration. However, the inherent heterogeneity and multi-scale characteristics of these systems pose…Jie Chen, Peiqi Li, Zhengkang He et al.·Nov 1, 2024SaveLearn
A Kinetic Scheme Based On Positivity Preservation For Multi-component Euler EquationsA kinetic model with flexible velocities is presented for solving the multi-component Euler equations. The model employs a two-velocity formulation in 1D and a three-velocity formulation in 2D. In…Shashi Shekhar Roy, S. V. Raghurama Rao·Nov 1, 2024SaveLearn
Simulating incompressible flows over complex geometries using the shifted boundary method with incomplete adaptive octree meshesWe extend the shifted boundary method (SBM) to the simulation of incompressible fluid flow using immersed octree meshes. Previous work on SBM for fluid flow primarily utilized two- or…Cheng-Hau Yang, Guglielmo Scovazzi, Adarsh Krishnamurthy et al.·Nov 1, 2024SaveLearn
Optimal Kinematics for Energy Harvesting Using Favorable Wake-Foil Interactions in Tandem Oscillating HydrofoilsThe energy harvesting performance of a pair of oscillating hydrofoil turbines in tandem configuration is experimentally studied to determine the optimal kinematics of the array. By characterizing…Eric E. Handy-Cardenas, Yuanhang Zhu, Kenneth S. Breuer·Oct 31, 2024SaveLearn
Stochastic Reconstruction of Gappy Lagrangian Turbulent Signals by Conditional Diffusion ModelsWe present a stochastic method for reconstructing missing spatial and velocity data along the trajectories of small objects passively advected by turbulent flows with a wide range of temporal or…Tianyi Li, Luca Biferale, Fabio Bonaccorso et al.·Oct 31, 2024SaveLearn
Enhancing Thrust in Flapping Airfoils Through Wake Interactions with Oscillating CylinderInspired by the natural motion of insects, fish, and other animals, flapping airfoils have gained significant importance due to their applications in fields such as ship propulsion, micro aerial…Amir Khan, Imran Akhtar, Muhammad Saif Ullah Khalid·Oct 31, 2024SaveLearn
A method for evaluating relations of turbulent normal-stresses by experimental data over a wide range of Reynolds numbersRecently, Nagib et al (2024 utilized indicator functions of profiles of the streamwise normal stress to reveal the ranges of validity, in wall distance and Reynolds number, for each of two proposed…Hassan Nagib, Ivan Marusic·Oct 31, 2024SaveLearn
High-resolution pressure imaging via background-oriented schlieren tomography: a spatiotemporal measurement for MHz ultrasound fields and hydrophone calibrationIn this work, the spatiotemporal pressure field of MHz-focused ultrasound is measured using a background-oriented schlieren technique combined with fast checkerboard demodulation and vector…Sayaka Ichihara, Masato Yamagishi, Yuta Kurashina et al.·Oct 31, 2024SaveLearn
Equilibrium theory of bidensity particle-laden suspensions in thin-film flow down a spiral separatorSpiral gravity separators are designed to separate multi-species slurry components based on differences in density and size. Previous studies have investigated steady-state solutions for mixtures of…Lingyun Ding, Sarah C. Burnett, Andrea L. Bertozzi·Oct 31, 2024SaveLearn
A comparative study of dynamic models for gravity-driven particle-laden flowsThe dynamics of viscous thin-film particle-laden flows down inclined surfaces are commonly modeled with one of two approaches: a diffusive flux model or a suspension balance model. The diffusive flux…Wing Pok Lee, Jonathan D. Woo, Luke F. Triplett et al.·Oct 31, 2024SaveLearn
3D Pore-Scale Mixing Interface EvolutionThe effective mixing behavior of solutes in porous media is fundamentally connected to the development of a local mixing interface between the two initial solutions, which is characterized by a…Daniel M C Hallack, Guillem Sole-Mari, Saif Farhat et al.·Oct 31, 2024SaveLearn
On-demand microfluidic droplet pinching and splitting under local confinement gradientsWe report the pinching of an elongated liquid droplet that is confined in a rectangular microchannel. The droplet pinching is induced by a local variation of the channel topography and can lead to…Margaux Kerdraon, Albane Théry, Marc Pascual et al.·Oct 31, 2024SaveLearn
Optimized Flow Control based on Automatic Differentiation in Compressible Turbulent Channel FlowsThis study presents an automatic differentiation (AD)-based optimization framework for flow control in compressible turbulent channel flows. We developed a fully differentiable boundary condition…Wenkang Wang, Xu Chu·Oct 30, 2024SaveLearn
Classically studied coherent structures only paint a partial picture of wall-bounded turbulenceFor the last 140 years, the mechanisms of transport and dissipation of energy in a turbulent flow have not been completely understood. Previous research has focused on analyzing the so-called…Andrés Cremades, Sergio Hoyas, Ricardo Vinuesa·Oct 30, 2024SaveLearn
FIEVel: A Fast InExpensive Velocimeter based on an optical mouse sensorFluid velocimetry is fundamental to a breadth of applications spanning academia and industry, however velocimetry at high temporal resolution is often prohibitively costly. Here, we introduce a Fast…Robert Hunt, Eli Silver, Daniel M. Harris·Oct 30, 2024SaveLearn
Unsteady aerodynamic response of pitching airfoils represented by Gaussian body forcesThe actuator line method (ALM) is an approach commonly used to represent lifting and dragging devices like wings and blades in large-eddy simulations (LES). The crux of the ALM is the projection of…Emanuel Taschner, Georgios Deskos, Michael B. Kuhn et al.·Oct 30, 2024SaveLearn
Differentiable Conservative Radially Symmetric Fluid Simulations and Stellar Winds -- jf1uidsWe present jf1uids, a one-dimensional fluid solver that can, by virtue of a geometric formulation of the Euler equations, model radially symmetric fluid problems in a conservative manner, i.e.,…Leonard Storcks, Tobias Buck·Oct 30, 2024SaveLearn
Response of a turbulent boundary layer to steady, square-wave-type transverse wall-forcingThis study investigates the spatial evolution of a zero pressure gradient turbulent boundary layer (TBL) imposed by a square-wave (SqW) of steady spanwise wall-forcing, which varies along the…Max W. Knoop, Rahul Deshpande, Ferry F. J. Schrijer et al.·Oct 30, 2024SaveLearn
Goodbye Christoffel Symbols: A Flexible and Efficient Approach for Solving Physical Problems in Curved SpacesTraditional methods for solving physical equations in curved spaces, especially in fluid mechanics and general relativity, rely heavily on the use of Christoffel symbols. These symbols provide the…Miguel A. Herrada·Oct 30, 2024SaveLearn
Analysis and applications of the upwind conservation element and solution element scheme for compressible flow simulationsThe upwind conservation element and solution element (CESE) scheme is an alternative discontinuity-capturing numerical approach to solving hyperbolic conservation laws. To evaluate the numerical…Yazhong Jiang, Lisong Shi, Chih-Yung Wen·Oct 30, 2024SaveLearn
Non-dissipative large-eddy simulation of wall-bounded transcritical turbulent flowsA posteriori analysis based upon a recently proposed non-dissipative large-eddy simulation framework for transcritical wall-bounded turbulence has been carried out. Due to the complexities arisen in…M. Bernades, F. Capuano, F. Duchaine et al.·Oct 29, 2024SaveLearn
Consistent Interface Capturing Adaptive Reconstruction Approach for Viscous Compressible Multicomponent FlowsThe paper proposes a physically consistent numerical discretization approach for simulating viscous compressible multicomponent flows. It has two main contributions. First, a contact discontinuity…Amareshwara Sainadh Chamarthi·Oct 29, 2024SaveLearn
Buoyancy-driven flow regimes for a melting vertical ice cylinder in saline waterThe presence of salt in seawater significantly affects the melt rate and morphological evolution of ice. This study investigates the melting process of a vertical cylinder in saline water using a…Dehao Xu, Simen T. Bootsma, Roberto Verzicco et al.·Oct 29, 2024SaveLearn
Vibrational methods for the symmetrization of asymmetric laminar viscous fluid flow in a plane diffuserThis paper presents the results of numerical modeling of laminar flows of a viscous incompressible fluid in a flat diffuser with and without vibration effects. Two methods of flow symmetrization in a…Alexey I. Fedyushkin, Andrei A. Gnevushev, Artem S. Zakharov·Oct 28, 2024SaveLearn
Super-resolution with dynamics in the lossSuper-resolution of turbulence is a term used to describe the prediction of high-resolution snapshots of a flow from coarse-grained observations. This is typically accomplished with a deep neural…Jacob Page·Oct 28, 2024SaveLearn