Intermittency of bubble deformation in turbulenceThe deformation of finite-sized bubbles in intense turbulence exhibits complex geometries beyond simple spheroids as the bubbles exchange energy with the surrounding eddies across a wide range of…Xu Xu, Yinghe Qi, Shijie Zhong et al.·Oct 28, 2024SaveLearn
Transition time of a bouncing dropContact time of bouncing drops is one of the most essential parameters to quantify the water-repellency of surfaces. Generally, the contact time on superhydrophobic surfaces is known to be Weber…Yahua Liu, Seyed Ali Hosseini, Cong Liu et al.·Oct 28, 2024SaveLearn
Capturing multiscale interactions in fluid flow via Lagrangian coherent structures and modal analysisWe consider the relationship between Eulerian modal decompositions and Lagrangian coherent structures (LCSs). The model sensitivity framework developed by Kaszás and Haller (2020) is used to express…Morgan R. Jones, Charles Klewicki, Oliver Khan et al.·Oct 28, 2024SaveLearn
Effect of gas viscosity on the interfacial instability development in a two-phase mixing layerThe interfacial instability in a two-phase mixing layers between parallel gas and liquid streams is important to two-phase atomization. Depending on the inflow conditions and fluid properties,…Tanjina Azad, Yue Ling·Oct 27, 2024SaveLearn
Impact of vaporization on drop aerobreakupAerodynamic breakup of vaporizing drops is commonly seen in many spray applications. While it is well known that vaporization can modulate interfacial instabilities, the impact of vaporization on…Bradley Boyd, Sid Becker, Yue Ling·Oct 27, 2024SaveLearn
A Navier-Stokes asymptotic preserving Direct Simulation Monte Carlo method for multi-species gas flowsThis paper introduces a new asymptotic-preserving Monte Carlo (APMC) method for simulating multi-species gas flows. This method decomposes the collision operator of the traditional APMC methods into…Fei Fei·Oct 27, 2024SaveLearn
On a pipeline pressure drop model for nonideal, compressible, gas mixture flow with application to pipeline flow of natural gas-hydrogen blendsThis work presents a novel, dimensionless model that results in a dimensionless algebraic equation that can be used to quantify the pressure drop associated with the steady state, isothermal flow…Jeremy Conner, Vasilios I. Manousiouthakis·Oct 26, 2024SaveLearn
Physics-informed Shadowgraph Network: An End-to-end Density Field Reconstruction MethodThis study presents a novel approach for quantificationally reconstructing density fields from shadowgraph images using physics-informed neural networksXutun Wang, Yuchen Zhang, Zidong Li et al.·Oct 26, 2024SaveLearn
The diffusive compressible Euler model in moving reference framesWe continue to investigate the diffusive compressible Euler (dcE) model for viscous and heat conducting compressible fluid flow, which has been proposed by M. Sv\"ard as an alternative to the…Melissa L. Morris·Oct 26, 2024SaveLearn
Vortex Formation and Dissipation in Chaotic Flows: A Hypercomplex ApproachThis article presents a comprehensive analysis of the formation and dissipation of vortices within chaotic fluid flows, leveraging the framework of Sobolev and Besov spaces on Riemannian manifolds.…Rômulo Damasclin Chaves dos Santos, Jorge Henrique de Oliveira Sales·Oct 26, 2024SaveLearn
Laminarising turbulent pipe flow by linear and nonlinear optimisationIt has been observed that flattening the mean velocity profile of pipe flow by body force can laminarise turbulence, a promising means to reduce frictional drag substantially. To explore whether…Shijun Chu, Ashley P. Willis, Elena Marensi·Oct 25, 2024SaveLearn
Analytical solutions of layered Poiseuille flows in the diffuse interface modelBased on the two-phase macroscopic governing equations in the phase field model, the governing equations and analytical solutions for the steady-state layered Poiseuille flows in the diffuse…Jun Lai, Yiming Qi, Lian-Ping Wang·Oct 25, 2024SaveLearn
Modelling the influence of streamwise flow field acceleration on the aerodynamic performance of an actuator discStreamwise acceleration of the background flow field is one of various effects occurring when wind turbines operate under non-idealized conditions, such as in complex terrain or in dense wind farms.…Clemens Paul Zengler, Niels Troldborg, Mac Gaunaa·Oct 25, 2024SaveLearn
Performance characteristics and bluff-body modeling of high-blockage cross-flow turbine arrays with varying rotor geometryWhile confinement is understood to increase the power and thrust coefficients of cross-flow turbines, how the optimal rotor geometry changes with the blockage ratio -- defined as the ratio between…Aidan Hunt, Gregory Talpey, Gemma Calandra et al.·Oct 24, 2024SaveLearn
An assessment of event-based imaging velocimetry for efficient estimation of low-dimensional coordinates in turbulent flowsThis study explores the potential of neuromorphic Event-Based Vision (EBV) cameras for data-efficient representation of low-order model coordinates in turbulent flows. Unlike conventional imaging…Luca Franceschelli, Christian E. Willert, Marco Raiola et al.·Oct 24, 2024SaveLearn
Characterization of low-viscosity electrorheological fluids: Technical Issues and ChallengesThe electrorheological (ER) characterization of low-viscosity fluids is paramount for producing micro- and nanoscale products through electrohydrodynamic (EHD) techniques, such as EHD-jet printing,…Pedro. C. Rijo, Francisco J. Galindo-Rosales·Oct 24, 2024SaveLearn
Acoustothermal Effect: Mechanism and Quantification of the Heat SourceWe examined theoretically, experimentally and numerically the origin of the acoustothermal effect using a standing surface acoustic wave actuated sessile water droplet system. Despite a wealth of…Pradipta Kr. Das, Venkat R. Bhethanabotla·Oct 24, 2024SaveLearn
A Field Theory Framework of Incompressible Fluid DynamicsThis study develops an effective theoretical framework that couples two vector fields: the velocity field u and an auxiliary vorticity field . Together, these fields form…Jianfeng Wu, Lurong Ding, Hongtao Lin et al.·Oct 24, 2024SaveLearn
Bilayer one-dimensional Convection-Diffusion-Reaction-Source problem. Analytical and numerical solutionThis article presents a theoretical analysis of a one-dimensional heat transfer problem in two layers involving diffusion, advection, internal heat generation or loss linearly dependent on…Guillermo Federico Umbricht, Diana Rubio, Domingo Alberto Tarzia·Oct 24, 2024SaveLearn
Hybrid LES/RANS for flows including separation: A new wall function using Machine Learning based on binary search treesMachine Learning (ML) is used for developing wall functions for Improved Delayed Detached Eddy Simulations (IDDES). The ML model is based on KDtree which essentially is a fast look-up table. It…Lars Davidson·Oct 23, 2024SaveLearn
A fully-coupled algorithm with implicit surface tension treatment for interfacial flows with large density ratiosThe stability of most surface-tension-driven interfacial flow simulations is governed by the capillary time-step constraint. This concerns particularly small-scale flows and, more generally,…Romain Janodet, Berend van Wachem, Fabian Denner·Oct 23, 2024SaveLearn
Electrostatics slows down the breakup of liquid bridges on solid surfacesWe experimentally study the breakup of water-glycerol liquid bridges on non-conductive surfaces and find that spontaneous charge deposition at the receding contact line, slide electrification, can…Salar Jabbary Farrokhi, Aaron D. Ratschow, Steffen Hardt·Oct 23, 2024SaveLearn
Discovery of Quasi-Integrable Equations from traveling-wave data using the Physics-Informed Neural NetworksPhysics-Informed Neural Networks (PINNs) have emerged as a powerful tool for analyzing nonlinear partial differential equations and identifying governing equations from observational data. In this…A. Nakamula, K. Obuse, N. Sawado et al.·Oct 23, 2024SaveLearn
Traveling spatially localized convective structures in an inclined porous mediumMultiple stationary, localized structures were recently found for inclined porous medium convection with constant-temperature boundaries. We analyze traveling asymmetric, localized convective…Zhiwei Dave Li, Chang Liu, Adrian van Kan et al.·Oct 23, 2024SaveLearn
Role of the argon and helium bath gases on the structure of H2/O2 detonationsThis study investigates the role of two inert mono-atomic diluents, argon and helium, on the detonation structure in order to assess the importance of vibrational non-equilibrium and wall losses.…Farzane Zangene, Matei I. Radulescu·Oct 23, 2024SaveLearn