Deciphering boundary layer dynamics in high-Rayleigh-number convection using 3360 GPUs and a high-scaling in-situ workflowTurbulent heat and momentum transfer processes due to thermal convection cover many scales and are of great importance for several natural and technical flows. One consequence is that a fully…Mathis Bode, Damian Alvarez, Paul Fischer et al.·Jan 22, 2025SaveLearn
A global similarity correction for the RANS modeling of natural convection in unstably stratified flowsThis study proposes a global similarity correction for Reynolds-averaged Navier--Stokes (RANS) modeling of buoyancy effects in unstably stratified flows. Conventional two-equation RANS models (e.g.,…Da-Sol Joo·Jan 22, 2025SaveLearn
Local slip length and surfactant effects on liquid-infused surfacesRobust surfaces capable of reducing flow drag, controlling heat and mass transfer, and resisting fouling in fluid flows are important for various applications. In this context, textured surfaces…Sofia Saoncella, Julien Cerutti, Théo Lenavetier et al.·Jan 22, 2025SaveLearn
Impact of saturation on evaporation-driven density instabilities in porous media: mathematical and numerical analysisEvaporation from a porous medium partially saturated with saline water, causes the salinity (salt concentration) to increase near the top of the porous medium as water leaves while salt stays behind.…C. Bringedal, S. Kiemle, C. J. van Duijn et al.·Jan 22, 2025SaveLearn
An Implicit Adaptive Fourier Neural Operator for Long-term Predictions of Three-dimensional TurbulenceLong-term prediction of three-dimensional (3D) turbulent flows is one of the most challenging problems for machine learning approaches. Although some existing machine learning approaches such as…Yuchi Jiang, Zhijie Li, Yunpeng Wang et al.·Jan 22, 2025SaveLearn
High-efficient machine learning projection method for incompressible Navier-Stokes equationsThis study proposes a high-efficient machine learning (ML) projection method using forward-generated data for incompressible Navier-Stokes equations. A Poisson neural network (Poisson-NN) embedded…Ruilin Chen·Jan 22, 2025SaveLearn
Elliptic Relaxation Strategies to Support Numerical Stability of Segregated Continuous Adjoint Flow SolversThis paper introduces a novel method for numerically stabilizing sequential continuous adjoint flow solvers utilizing an elliptic relaxation strategy. The proposed approach is formulated as a Partial…Niklas Kühl·Jan 21, 2025SaveLearn
Weak and strong turbulence in self-focusing and defocusing mediaWhile the focusing and defocusing Nonlinear Schrodinger Equations have similar behavior in the weak turbulence regime, they must differ dramatically in the strong turbulence regime. Here, we show…Vladimir Rosenhaus, Gregory Falkovich·Jan 21, 2025SaveLearn
FENN: Feature-enhanced neural network for solving partial differential equations involving fluid mechanicsPhysics-informed neural networks (PINNs) have shown remarkable prospects in solving forward and inverse problems involving partial differential equations (PDEs). However, PINNs still face the…Jiahao Song, Wenbo Cao, Weiwei Zhang·Jan 21, 2025SaveLearn
Large Amplitude Oscillatory Extension (LAOE) of dilute polymer solutionsThis study presents an experimental framework for large amplitude oscillatory extension (LAOE) to investigate nonlinear material properties of complex fluids. Using a microfluidic optimized shape…Steffen M. Recktenwald, Thomas P. John, Amy Q. Shen et al.·Jan 21, 2025SaveLearn
Strong and weak dynamo regimes in Taylor-Couette flowsWe reveal a nonlinear magnetic dynamo in a Taylor-Couette flow at small magnetic Prandtl numbers Pm≤ 1, which has been previously believed to exist only at higher Pm 10 in this flow.…A. Mishra, G. Mamatsashvili, F. Stefani·Jan 20, 2025SaveLearn
A universal hydrodynamic transition in confined marine invertebrate larvaeThe ocean is teeming with a myriad of mm-sized invertebrate planktonic larvae, which thrive in a viscous fluid environment. Many of them rely on ciliary beating to generate fluid flows for locomotion…Bikram D. Shrestha, Santhan Chandragiri, Christian D. Gibson et al.·Jan 20, 2025SaveLearn
On the Energy Analysis of Two-phase Flows Simulated with the Diffuse Interface MethodThe Phase-Field Method (PFM) is employed to simulate two-phase flows with the fully-coupled Cahn-Hilliard-Navier-Stokes (CHNS) equations governing the temporal evolution. The methodology minimizes…Ali Mostafavi, Mohammadmahdi Ranjbar, Vitaliy Yurkiv et al.·Jan 20, 2025SaveLearn
Competition between thermocapillary and solutocapillary flows in thin liquid filmsWe investigate the thermocapillary flow in a thin liquid film which is subjected to local heating, in the presence of insoluble surfactants. While surfactant molecules are first advected from warmer…Darsh Kumar, Pradipta Kumar Panigrahi, Thomas Bickel·Jan 20, 2025SaveLearn
Hydrodynamic flow field and frictional resistance coefficient of a disk rotating steadily in a compressible fluid layer with odd viscosity on a rigid substrateWe analyze the hydrodynamics of a rotating disk in a two-dimensional compressible fluid layer with odd viscosity. Unlike conventional fluids, odd viscosity introduces a radial flow component that can…Abdallah Daddi-Moussa-Ider, Yuto Hosaka, Elsen Tjhung et al.·Jan 20, 2025SaveLearn
Physics-Informed Neural Networks for Solving the Two-Dimensional Shallow Water Equations with Terrain Topography and Rainfall Source TermsSolving the two-dimensional shallow water equations is a fundamental problem in flood simulation technology. In recent years, physics-informed neural networks (PINNs) have emerged as a novel…Yongfu Tian, Shan Ding, Guofeng Su et al.·Jan 20, 2025SaveLearn
Laser-induced plasma formation and cavitation in water: from nanoeffects to extreme states of matterWe present an in-depth analysis of the energy dependence of optical breakdown in water by tightly focused laser pulses, from plasma formation to shock waves and cavitation. Laser pulses of fs to ns…Norbert Linz, Sebastian Freidank, Xiao-Xuan Liang et al.·Jan 19, 2025SaveLearn
Axisymmetric Pushing of a Spherical Cargo using an Active Spherical Janus MotorWe analyze the interaction between a self-diffusiophoretic spherical Janus motor and an inert spherical cargo particle in an axisymmetric configuration in the Stokes regime. To study the different…Subramaniam Chembai Ganesh, Jessica S. Rosenberg, Jeffrey F. Morris et al.·Jan 19, 2025SaveLearn
Digital Sub-millimeter Bubble-JetsWe create digital sub-millimeter bubble-jet emitting in gas-liquid co-flows at tapered chip zone for moderate Re [20, 120]. Self-similarity features are revealed at the tapered area and giving…B. J. Ruan, Z. L. Wang·Jan 19, 2025SaveLearn
Spectral dynamics of natural and forced supersonic twin-rectangular jet flowWe study the stationary, intermittent, and nonlinear dynamics of natural and forced supersonic twin-rectangular turbulent jets using spectral modal decomposition. We decompose large-eddy simulation…Brandon Yeung, Oliver T. Schmidt·Jan 18, 2025SaveLearn
Incremental Model Order Reduction of Smoothed-Particle Hydrodynamic SimulationsEngineering simulations are usually based on complex, grid-based, or mesh-free methods for solving partial differential equations. The results of these methods cover large fields of physical…Eduardo Di Costanzo, Niklas Kühl, Jean-Christophe Marongiu et al.·Jan 18, 2025SaveLearn
Effect of Magnetic Field on Aqueous Humor Flows Inside Anterior Chamber of Human EyeAqueous humor (AH) dynamics is responsible for maintaining intraocular pressure, ocular health and targeted drug delivery within the eye. This study investigates the flow of AH within the anterior…Deepak Kumar, Subramaniam Pushpavanam·Jan 18, 2025SaveLearn
Classical waves and instabilities using the minimalist approachThe minimalist approach in the study of perturbations in fluid dynamics and magnetohydrodynamics involves describing their evolution in the linear regime using a single first-order ordinary…Nektarios Vlahakis·Jan 18, 2025SaveLearn
Tailwind turbulence: a bound on the energy available from turbulence for transit, tested in Kraichnan's modelWe investigate the unconstrained minimum energy required for vehicles to move through turbulence. We restrict our study to vehicles that interact with their environment through thrust, weight and…Scott A. Bollt, Gregory P. Bewley·Jan 17, 2025SaveLearn
Jet Size Prediction in Compound Multiphase Bubble BurstingThe Worthington jets from bursting bubbles at a gas-liquid interface can break up into small droplets, aerosolizing chemical and biological substances into the atmosphere and impacting both global…Zhengyu Yang, Yang Liu, Jie Feng·Jan 17, 2025SaveLearn