Multifluid tensorial equations for the flow of semi-dilute monodisperse suspensionsUsing the volume averaging technique of Jackson (1997), we derive a set of two-fluid equations that describe the dynamics of a mono-disperse non-Brownian colloidal suspension in the semi-dilute…Dalton J. E. Harvie·Jan 3, 2025SaveLearn
Computational Modeling and Analysis of the Coupled Aero Structural Dynamics in Bat Inspired WingsWe employ a novel computational modeling framework to perform high-fidelity direct numerical simulations of aero-structural interactions in bat-inspired membrane wings. The wing of a bat consists of…Sushrut Kumar, Jung-Hee Seo, Rajat Mittal·Jan 3, 2025SaveLearn
Turbulent Pipe Flow of Thixotropic FluidsComplex materials with internal microstructure such as suspensions and emulsions exhibit time-dependent rheology characterized by viscoelasticity and thixotropy. In many large-scale applications such…Noman Yousuf, Daniel Lester, Murray Rudman et al.·Jan 3, 2025SaveLearn
Bioinspired Drone Rotors for Reduced Aeroacoustic Noise and Improved EfficiencyThe application of unmanned aerial vehicles (UAVs) is surging across several industries, paralleled by growing demand for these UAVs. However, the noise emitted by UAVs remains a significant…Suryansh Prakhar, Jung-Hee Seo, Rajat Mittal·Jan 2, 2025SaveLearn
Reinforcement-learning-based control of turbulent channel flows at high Reynolds numbersDeep reinforcement learning (DRL) is employed to develop control strategies for drag reduction in direct numerical simulations (DNS) of turbulent channel flows at high Reynolds numbers. The DRL agent…Zisong Zhou, Mengqi Zhang, Xiaojue Zhu·Jan 2, 2025SaveLearn
Quantification of Flagellar Gait Changes with Combined Shape Mode Analysis and Swimming SimulationsMany different microswimmers propel themselves using flagella that beat periodically. The shape of the flagellar beat and swimming speed have been observed to change with fluid rheology. We quantify…Kelli E. Gutierrez, Becca Thomases, Paulo E. Arratia et al.·Jan 2, 2025SaveLearn
Asymptotic approximations for convection onset with Ekman pumping at low wavenumbersEkman pumping is a phenomenon induced by no-slip boundary conditions in rotating fluids. In the context of Rayleigh-B\'enard convection, Ekman pumping causes a significant change in the linear…Sara Tro, Ian Grooms, Keith Julien·Jan 2, 2025SaveLearn
CoronaryHemodynamics: An Automated Simulation Framework for Coronary Artery Hemodynamics Using OpenFOAMCoronaryHemodynamics is a comprehensive simulation package developed on the OpenFOAM platform, designed specifically for coronary artery hemodynamics analysis. The package integrates a complete suite…Yijin Mao, Yuwen Zhang·Jan 2, 2025SaveLearn
Operator Learning for Reconstructing Flow Fields from Sparse Measurements: an Energy Transformer ApproachMachine learning methods have shown great success in various scientific areas, including fluid mechanics. However, reconstruction problems, where full velocity fields must be recovered from partial…Qian Zhang, Dmitry Krotov, George Em Karniadakis·Jan 2, 2025SaveLearn
The reformed hydrodynamic Schr\"odinger equation and the effective method for eliminating pseudo-quantum potential: a case study on barotropic potential flowGiven the discrepancies between the framework of the hydrodynamic Schr\"odinger equation (HSE) and classical fluid dynamics, we propose a reformed framework, termed the reformed hydrodynamic…Yi-Sian Ciou·Jan 2, 2025SaveLearn
Structure of an axisymmetric turbulent boundary layer under adverse pressure gradient: a large-eddy simulation studyThe spatial characteristics and structure of an axisymmetric turbulent boundary layer under strong adverse pressure gradient and weak transverse curvature are investigated using incompressible…Di Zhou, Kan Wang, Meng Wang·Jan 2, 2025SaveLearn
Solving all laminar flows around airfoils all-at-once using a parametric neural network solverRecent years have witnessed increasing research interests of physics-informed neural networks (PINNs) in solving forward, inverse, and parametric problems governed by partial differential equations…Wenbo Cao, Shixiang Tang, Qianhong Ma et al.·Jan 2, 2025SaveLearn
Computational fluid dynamics-based structure optimization of ultra-high-pressure water-jet nozzle using approximation methodSince the geometry structure of ultra-high-pressure (UHP) water-jet nozzle is a critical factor to enhance its hydrodynamic performance, it is critical to obtain a suitable geometry for a UHP water…Yuan-Jie Chen, Ting Zhou·Jan 2, 2025SaveLearn
The effect of turbulence, gravity, and non-continuum hydrodynamic interactions on the drop size distribution in cloudsThe evolution of micron-sized droplets in clouds is studied with focus on the 'size-gap' regime of 15-40 μ m radius, where condensation and differential sedimentation are least effective in…Johnson Dhanasekaran, Donald. L. Koch·Jan 2, 2025SaveLearn
Transient rod-climbing in an Oldroyd-B fluidThe Weissenberg effect, or rod-climbing phenomenon, occurs in non-Newtonian fluids where the fluid interface ascends along a rotating rod. Despite its prominence, theoretical insights into this…Tachin Ruangkriengsin, Rodolfo Brandão, Katie Wu et al.·Jan 2, 2025SaveLearn
Feasibility Study of a Hybrid Solid Liquid Vibration Energy Harvester: Numerical Simulation & AnalysisIn this paper, we have introduced and studied the feasibility of a hybrid solid liquid vibration energy harvester. The energy harvester consists of a ferrofluid partially filled in a tank and a…Nadish Anand, Warren Jasper·Jan 2, 2025SaveLearn
Thread-safe multiphase lattice Boltzmann model for droplet and bubble dynamics at high density and viscosity contrastsThis study presents a high-order, thread-safe version of the lattice Boltzmann (LBM) method, incorporating an interface-capturing equation, based on the conservative Allen-Cahn equation, to simulate…Marco Lauricella, Adriano Tiribocchi, Sauro Succi et al.·Jan 1, 2025SaveLearn
Effect of swimming mode on shielding of odor traces in turbulenceMarine organisms manipulate their surrounding flow through their swimming dynamics, which affects the transport of their own odor cues. We demonstrate by direct numerical simulations how a group of…Martin James, Francesco Viola, Agnese Seminara·Jan 1, 2025SaveLearn
Hierarchical equivariant graph neural networks for forecasting collective motion in vortex clusters and microswimmersData-driven modeling of collective dynamics is a challenging problem because emergent phenomena in multi-agent systems are often shaped by long-range interactions among individuals. For example, in…Alec J. Linot, Haotian Hang, Eva Kanso et al.·Dec 31, 2024SaveLearn
Finding the Underlying Viscoelastic Constitutive Equation via Universal Differential Equations and Differentiable PhysicsThis research employs Universal Differential Equations (UDEs) alongside differentiable physics to model viscoelastic fluids, merging conventional differential equations, neural networks and numerical…Elias C. Rodrigues, Roney L. Thompson, Dário A. B. Oliveira et al.·Dec 31, 2024SaveLearn
An OpenFOAM face-centred solver for incompressible flows robust to mesh distortionThis work presents an overview of mesh-induced errors commonly experienced by cell-centred finite volumes (CCFV), for which the face-centred finite volume (FCFV) paradigm offers competitive…Davide Cortellessa, Matteo Giacomini, Antonio Huerta·Dec 31, 2024SaveLearn
Droplet Nucleation In a Rapid Expansion Aerosol ChamberWe present a new experimental facility to investigate the nucleation and growth of liquid droplets and ice particles under controlled conditions and characterize processes relevant to cloud…Martin A Erinin, Cole R. Sagan, Ilian Ahmed et al.·Dec 31, 2024SaveLearn
Metriplectic 4-bracket algorithm for constructing thermodynamically consistent dynamical systemsA unified thermodynamic algorithm (UTA) is presented for constructing thermodynamically consistent dynamical systems, i.e., systems that have Hamiltonian and dissipative parts that conserve energy…Azeddine Zaidni, Philip J. Morrison·Dec 30, 2024SaveLearn
A Shifted Boundary Method for Thermal FlowsThis paper presents an incomplete Octree mesh implementation of the Shifted Boundary Method (Octree-SBM) for multiphysics simulations of coupled flow and heat transfer. Specifically, a semi-implicit…Cheng-Hau Yang, Guglielmo Scovazzi, Adarsh Krishnamurthy et al.·Dec 30, 2024SaveLearn
Systematic Benchmarking of Macrosegregation: The Performance of a Modified Hybrid ModelRecently, a new alloy solidification benchmark, called AFRODITE, with well-defined setups and state-of-the-art measurements has emerged, enabling a thorough assessment of MacroSegregation (MS)…Ali Moeinirad, Ehsan Amani·Dec 30, 2024SaveLearn