Dynamics of an autocatalytic reaction front: effects of imposed turbulence and buoyancy-driven flowsThin flame dynamics in a turbulent flow remains debated, with various parameterizations proposed for the typical flame propagation velocity. According to the classical Damk\"ohler's model based on…Nihal Tawdi, Christophe Almarcha, Michael Le Bars·Sep 8, 2025SaveLearn
Wave-like Spiral Interactions and the Emergence of Quasi-Biennial Oscillations in Strato-Rotational FlowsThis study investigates the dynamics of Strato-Rotational Instability (SRI) in a stratified, rotating fluid, focusing on the interaction between axial modes and spiral components. Through numerical…Gabriel Meletti, Stéphane Abide, Stéphane Viazzo et al.·Sep 8, 2025SaveLearn
An Unsplit Scheme for Interface Advection in the Edge-based Interface Tracking (EBIT) MethodWe propose an unsplit scheme for interface advection in a novel Front-Tracking method, called the Edge-Based Interface Tracking (EBIT) method. In the EBIT method, the markers are placed on the grid…Jieyun Pan, Tian Long, Ruben Scardovelli et al.·Sep 8, 2025SaveLearn
Helical Locomotion in Yield Stress FluidsWe report three stages for locomotion of a helical swimmer in yield stress fluids. In the first stage, the swimmer must overcome material's yield strain to generate rotational motion. However,…Farshad Nazari Kourosh Shoele, Hadi Mohammadigoushki·Sep 8, 2025SaveLearn
Influence of Boundary Conditions and Heating Modes on the Onset of Columnar Convection in Rotating Spherical ShellsWe investigate the linear onset of thermal convection in rotating spherical shells with a focus on the influence of mechanical boundary conditions and thermal driving modes. Using a spectral method,…William Seeley, Francesca Coke, Radostin Simitev et al.·Sep 8, 2025SaveLearn
Learning Rarefied Gas Dynamics with Physics-Enforced Neural NetworksThis study develops and validates neural network frameworks with physics-based constraints for surrogate modeling of rarefied gas dynamics across different levels of complexity. As a baseline, we…Ehsan Roohi, Ahmad Shoja-Sani, Bijan Goshayeshi et al.·Sep 7, 2025SaveLearn
Decay of two-dimensional superfluid turbulence over pinning surfaceWe report on the free decay of quasi-two-dimensional turbulence in superfluid 4He confined within nanofluidic channels. Using a pump-probe technique, we observe a complex decay of the vortex…Filip Novotný, Marek Talíř, Emil Varga·Sep 7, 2025SaveLearn
Bubble coalescence dynamics in a high-Reynolds number decaying turbulent flowThis study experimentally investigates bubble size evolution and void fraction redistribution in an unexplored, coalescence-dominated regime of decaying turbulent bubbly flow. The flow is generated…Vivek Kumar, Prasoon Suchandra, Ardalan Javadi et al.·Sep 7, 2025SaveLearn
A capillary diode for potential application in water-oil separationA capillary device is designed and fabricated in glass to work as a fluidic diode with vanishingly small hydrodynamic conductance for imbibition of water within a finite range of immersion depths.…Dhiraj Nandyala, Zhen Wang, David Hwang et al.·Sep 6, 2025SaveLearn
Vector-based loss functions for turbulent flow field inpaintingWhen developing scientific machine learning (ML) approaches, it is often beneficial to embed knowledge of the physical system in question into the training process. One way to achieve this is by…Samuel J. Baker, Shubham Goswami, Xiaohang Fang et al.·Sep 6, 2025SaveLearn
A quantitative analysis of leading edge vortices in flapping wing aerodynamicsThe leading edge vortex (LEV) is one of the most important lift augmentation mechanisms in flapping wing aerodynamics. We propose a methodology that aims to provide a quantitative description of the…Alejandro Gonzalo, Manuel Garcia-Villalba, Oscar Flores·Sep 5, 2025SaveLearn
A multiscale numerical approach to investigate interfacial mass transfer in three phase flow: application to metallurgical bottom-blown ladlesWe use direct numerical simulation (DNS) to investigate mass transfer between liquid steel and slag during a metallurgical secondary refinement process through two reduced-scale water experiments,…Stefano De Rosa, Jacob Maarek, Stéphane Zaleski·Sep 5, 2025SaveLearn
Improving Spatial Resolution of Background Oriented Schlieren Based on Directional RaysThe background-oriented Schlieren technique has emerged as a promising method for visualizing density gradients and performing quantitative measurements. However, an inherent constraint of BOS is the…Xiang Li, Muen Gao, Weiran Wang et al.·Sep 5, 2025SaveLearn
Magnetorotational and convective instabilities in a thin layer of electrically conductive nanofluid under an external helical magnetic fieldThis review summarizes recent advances in the theoretical analysis of the stability of magnetized flows in a non-uniformly rotating layer of electrically conductive nanofluid, incorporating the…M. I. Kopp, V. V. Yanovsky·Sep 5, 2025SaveLearn
Nonlinear Stability in the Two-Fluid ModelThe 1-D Two-Fluid Model (TFM) promises a powerful and computationally cheap platform for simulating multi-fluid flow phenomena. However, runaway Kelvin-Helmholtz instabilities plagued previous…Alexander López-de-Bertodano, Alejandro Clausse·Sep 4, 2025SaveLearn
Modeling and Computational Fluid Dynamics Validation of a Nonholonomically Constrained Two-Rigid-Body Swimming SystemA simple nonholonomic dynamics model is developed as a low-order model for generating undulatory swim-like motions, validated through computational fluid dynamics (CFD) simulations. The…Jamal Ardister, James Geddes, Brian F. Feeny et al.·Sep 4, 2025SaveLearn
Steady inertial flow of a compressible fluid in a spatially periodic channel under large pressure drops: a multiscale semi-analytical approachSpatially-periodic channels are increasingly attracting attention as an efficient alternative to packed columns for a number of analytical and engineering processes. In incompressible flows, the…Valentina Biagioni, Bram Huygens, Giuseppe Procopio et al.·Sep 4, 2025SaveLearn
Stability analysis of thermodiffusively unstable counterflow lean premixed hydrogen flamesThis study investigates the effect of increasing strain rate on thermodiffusively unstable, lean premixed hydrogen flames in a 2D counterflow configuration through detailed-chemistry numerical…Alessandro Porcarelli, Pasquale Eduardo Lapenna, Francesco Creta et al.·Sep 4, 2025SaveLearn
Design of the wavy wall in a partially heated channel using CFD simulations and human-assisted Bayesian optimizationThis study explores heated wavy wall shape design in channel flow using machine learning, aiming to minimize temperature variation (σT) while limiting pressure loss ( p). A cost…Piotr Kamiński, Karol Wawrzak, Yiqing Li et al.·Sep 4, 2025SaveLearn
Entry and penetration of a superhydrophobic sphere into a deep poolThis study experimentally examines the entry and penetration of a superhydrophobic sphere into a quiescent deep pool, with special emphasis placed on the primary and secondary pinch-off of the air…Prasanna Kumar Billa, Cameron Tropea, Pallab Sinha Mahapatra·Sep 4, 2025SaveLearn
Towards Physics Constrained Deep Learning Based Turbulence Model Uncertainty QuantificationTurbulence Models represent the workhorse for simulations used in engineering design and analysis. Despite their low computational cost and robustness, these models suffer from substantial predictive…Minghan Chu, Weicheng Qian·Sep 4, 2025SaveLearn
Sequential estimation of disturbed aerodynamic flows from sparse measurements via a reduced latent spaceThis work presents a fast, uncertainty-aware sequential data assimilation framework for estimating key aerodynamic states (e.g., instantaneous vorticity fields and aerodynamic loads) during severe…Hanieh Mousavi, Anya Jones, Jeff Eldredge·Sep 4, 2025SaveLearn
From Geostrophic to Magnetically-Damped Turbulence in Liquid Metal Rotating MagnetoconvectionUnderstanding planetary core convection dynamics requires the study of convective flows in which the Coriolis and Lorentz forces attain a leading-order, so-called magnetostrophic balance.…Tao Liu, Yufan Xu, Jewel A. Abbate et al.·Sep 3, 2025SaveLearn
Optically-Trapped Particle Tracking VelocimetryIn this paper, we propose a microflow velocimetry based on particle tracking with the aid of optical trapping of tracers, namely, optically-trapped particle tracking velocimetry (ot-PTV). The ot-PTV…Tetsuro Tsuji, Shoma Hashimoto, Satoshi Taguchi·Sep 3, 2025SaveLearn
Narwhals and their blessings: exact coherent structures of elastic turbulence in channel flowsSolutions of long, flexible polymer molecules are complex fluids that simultaneously exhibit fluid-like and solid-like behaviour. When subjected to external flows, dilute polymer solutions develop…Alexander Morozov, Martin Lellep, Damiano Capocci et al.·Sep 3, 2025SaveLearn