The Diffuse Solid Method for Wetting and Multiphase Fluid Simulations in Complex GeometriesWe develop a diffuse solid method that is versatile and accurate for modeling wetting and multiphase flows in highly complex geometries. In this scheme, we harness N + 1-component phase field models…Fandi Oktasendra, Michael Rennick, Samuel J. Avis et al.·Apr 28, 2025SaveLearn
Normality-based analysis of multiscale velocity gradients and energy transfer in direct and large-eddy simulations of isotropic turbulenceSymmetry-based analyses of multiscale velocity gradients highlight that strain self-amplification (SS) and vortex stretching (VS) drive forward energy transfer in turbulent flows. By contrast, a…Rahul Arun, Mostafa Kamal, Tim Colonius et al.·Apr 27, 2025SaveLearn
OpenFOAMGPT 2.0: end-to-end, trustworthy automation for computational fluid dynamicsWe propose the first multi agent framework for computational fluid dynamics that enables fully automated, end to end simulations directly from natural language queries. The approach integrates four…Jingsen Feng, Ran Xu, Xu Chu·Apr 27, 2025SaveLearn
Wave Energy Is Conserved in a Spatially Varying and Inhomogeneously Moving MediumWaves are propagating disturbances that redistribute energy across space. Previous studies have shown that for waves propagating through an inhomogeneously moving mean flow, the conserved quantity is…Zhaohua Wu, Jie Sun, Zhe-Min Tan et al.·Apr 27, 2025SaveLearn
Viscosity's impact on nutrient uptake along the gutThrough switching contraction patterns driving digestive flows, the small intestine balances nutrient uptake and waste removal. Complex segmentation contraction patterns are associated with higher…Fabian Karl Henn, Karen Alim·Apr 27, 2025SaveLearn
Profile-Preserving Phase-Field Model for Surfactant Transport and Adsorption-Desorption in Two-Phase Flow SystemsThe diffuse-interface model for two-phase flows with soluble surfactants has garnered considerable attention due to its ability to circumvent the need for Robin boundary condition in the bulk…Haohao Hao, Xiangwei Li, Luyun Xu et al.·Apr 27, 2025SaveLearn
A Lie Scale Invariance in Fluids with ApplicationsLie scale invariance is used to reduce the incompressible Navier-Stokes equations to non-linear ordinary equations. This yields a formulation in terms of logarithmic spirals as independent variables.…Richard Henriksen·Apr 26, 2025SaveLearn
The Boundary Layer Dispersion and Footprint Model: A fast numerical solver of the Eulerian steady-state advection-diffusion equationUnderstanding how greenhouse gases and pollutants move through the atmosphere is essential for predicting and mitigating their effects. We present a novel atmospheric dispersion and footprint model:…Mark Schlutow, Ray Chew, Mathias Göckede·Apr 26, 2025SaveLearn
Integer Lattice Gas with a sampling collision operator for the fluctuating Navier-Stokes EquationThis paper constitutes a step in the direction of developing integer lattice gas methods as an attractive alternative to lattice Boltzmann methods. Here we show that to Boltzmann limit the one…Noah Seekins, Alexander J. Wagner·Apr 25, 2025SaveLearn
Swash flow due to obliquely incident boresWe present a new solution to the nonlinear shallow water equations and show that it accurately predicts the swash flow due to obliquely approaching bores in large-scale wave basin experiments. The…Hyungyu Sung, Pedro Lomonaco, Patricia Chardon-Maldonado et al.·Apr 25, 2025SaveLearn
Development of a Scaled Down Horizontal Axis Wind Turbine for Wind Tunnel TestsThis paper presents a method to design and develop scaled down models of Horizontal Axis Wind Turbine (HAWT) to test in a limited sized wind tunnel. The mathematical design of a HAWT is carried out…Bhaskar Aryal, Bibek Bhurtel, Amit Sharma Bhandari et al.·Apr 25, 2025SaveLearn
A generalized fundamental solution technique for the regularized 13-moment system in rarefied gas flowsIn this work, we explore the method of fundamental solutions (MFS) for solving the regularized 13-moment (R13) equations for rarefied monatomic gases. While previous applications of the MFS in…Himanshi, Lambert Theisen, Anirudh Singh Rana et al.·Apr 25, 2025SaveLearn
Acoustic turbulence: from the Zakharov-Sagdeev spectra to the Kadomtsev-Petviashvili spectrumThis paper presents a brief review on theoretical and numerical works on three-dimensional acoustic turbulence both in a weakly nonlinear regime, when the amplitudes of sound waves are small, and in…E. A. Kochurin, E. A. Kuznetsov·Apr 25, 2025SaveLearn
HOSVD-SR: A Physics-Based Deep Learning Framework for Super-Resolution in Fluid DynamicsIn this work we present a novel methodology that combines Higher Order Singular Value Decomposition (HOSVD) with Deep Learning (DL) techniques for super-resolution in computational fluid dynamics…Guillermo Barragán, Ashton Hetherington, Rodrigo Abadía-Heredia et al.·Apr 25, 2025SaveLearn
RapidPIV: Full Flow-Field kHz PIV for Real-Time Display and ControlWe present a novel architecture for accelerating PIV calculations. An optical flow hardware accelerator does the brunt of the work, with cross-correlation only providing quick corrections. The result…Scott A. Bollt, Samuel H. Foxman, Morteza Gharib·Apr 25, 2025SaveLearn
Line Stretching in Random FlowsHow finite-sized material lines stretch in chaotic (mono-scale) and turbulent (multi-scale) flows remains a central but unresolved problem that governs mixing, transport and reaction. We show…Daniel Lester, Marco Dentz·Apr 24, 2025SaveLearn
On the symmetry-breaking instability of the flow past axisymmetric bluff bodiesThe primary bifurcation of the flow past three-dimensional axisymmetric bodies is investigated. We show that the azimuthal vorticity generated at the body surface is at the root of the instability,…A. Chiarini, R. Gauthier, E. Boujo·Apr 24, 2025SaveLearn
FlexPINN: Modeling Fluid Dynamics and Mass Transfer in 3D Micromixer Geometries Using a Flexible Physics-Informed Neural NetworkIn this study, fluid flow and concentration distribution inside a 3D T-shaped micromixer with various fin shapes and configurations are investigated using a Flexible Physics-Informed Neural Network…Meraj Hassanzadeh, Ehsan Ghaderi, Mohamad Ali Bijarchi·Apr 24, 2025SaveLearn
Trapping microswimmers in acoustic streaming flowThe acoustofluidic method holds great promise for manipulating microorganisms. When exposed to the steady vortex structures of acoustic streaming flow, these microorganisms exhibit intriguing dynamic…Xuyang Sun, Wenchang Tan, Yi Man·Apr 24, 2025SaveLearn
Intermittency and non-universality of pair dispersion in isothermal compressible turbulenceStatistical properties of the pair dispersion of Lagrangian particles (tracers) in incompressible turbulent flows provide insights into transport and mixing. We explore the same in transonic to…Sadhitro De, Dhrubaditya Mitra, Rahul Pandit·Apr 24, 2025SaveLearn
Electrohydrodynamic drift of a drop away from an insulating wallAn isolated charge-neutral drop suspended in an unbounded medium does not migrate in a uniform DC electric field. A nearby wall breaks the symmetry and causes the drop to drift towards or away from…Diptendu Sen, Mohammadhossein Firouznia, David Saintillan et al.·Apr 24, 2025SaveLearn
Data-driven stability analysis in a multi-element supercritical Liquid Oxygen-methane combustorThermoacoustic instability (TAI) is a pressing problem in rocket combustors. TAI can cause significant damage to a combustor, resulting in mission failure. Therefore, stability analysis is crucial…Arijit Bhattacharya, Abhishek Sharma, Ashoke De·Apr 24, 2025SaveLearn
Evaporation of Finite-Size Ammonia and n-Heptane Droplets in Weakly Compressible Turbulence: An Interface-Resolved DNS StudyThis study presents direct numerical simulation (DNS) of finite-size, interface-resolved ammonia and n-heptane droplets evaporating in decaying homogeneous isotropic turbulence. Simulations are…Salar Zamani Salimi, Andrea Gruber, Nicolò Scapin et al.·Apr 23, 2025SaveLearn
Coalescence delay mediated by the gas layer during the impact of hot dropletsCoalescence may not occur immediately when droplets impact a liquid film. Despite the prevalence of the high-temperature condition during the impact process in many applications, the effect of…Zhigang Xu, Haicheng Qi, Tianyou Wang et al.·Apr 23, 2025SaveLearn
Transition mechanisms in hypersonic wind-tunnel nozzles: a methodological approach using global linear stability analysisBase-flow computations and stability analyses are performed for a hypersonic wind tunnel nozzle at a Mach number of 6. Isothermal and adiabatic wall boundary conditions are investigated, and moderate…Hugo Lemarquand, Mathieu Lugrin, Cédric Content et al.·Apr 23, 2025SaveLearn