Odd viscosity suppresses intermittency in direct turbulent cascadesIntermittency refers to the broken self-similarity of turbulent flows caused by anomalous spatio-temporal fluctuations. In this Letter, we ask how intermittency is affected by a non-dissipative…Sihan Chen, Xander M. de Wit, Michel Fruchart et al.·Apr 29, 2024SaveLearn
Definition of vortex boundary using stagnation pressureA novel method is proposed to identify vortex boundary and center of rotation based on tubular surfaces of constant stagnation pressure and minimum of the stagnation pressure gradient. The method is…Marc Plasseraud, Krishnan Mahesh·Apr 29, 2024SaveLearn
The Role of Normal and Non-Normal Contributions to Enstrophy Production in the Near-Wall Region of a Turbulent Channel FlowThe turbulent boundary-layer is a region where both preferential dissipation of energy and the production of significant vorticity arises as a consequence of the strong velocity gradients. Previous…Christopher J Keylock·Apr 29, 2024SaveLearn
A real-time digital twin of azimuthal thermoacoustic instabilitiesWhen they occur, azimuthal thermoacoustic oscillations can detrimentally affect the safe operation of gas turbines and aeroengines. We develop a real-time digital twin of azimuthal thermoacoustics of…Andrea Nóvoa, Nicolas Noiray, James R. Dawson et al.·Apr 29, 2024SaveLearn
Characteristics of active and inactive motions in high-Reynolds-number turbulent boundary layersWall-scaled (attached) eddies play a significant role in the overall drag experienced in high-Reynolds-number turbulent boundary layers (TBLs). This study aims to delve into the underlying mechanisms…Rahul Deshpande, Ricardo Vinuesa, Ivan Marusic·Apr 29, 2024SaveLearn
Numerical investigation of fluid-structure interaction in a pilot-operated microfluidic valveThe present paper is concerned with numerical investigation of the performance of a pilot-operated control valve based on shape memory alloy actuation control. The valve under investigation can be…Ahmed Aissa Berraies, E. Harald van Brummelen, Ferdinando Auricchio·Apr 28, 2024SaveLearn
A Review of the Accuracy of Direct Numerical Simulation Tools for the Simulation of Non-Spherical Bubble CollapsesNumerical methods for the simulation of cavitation processes have been developed for more than 50 years. The rich variety of physical phenomena triggered by the collapse of a bubble has several…Mandeep Saini, Lucas Prouvost, Stephane Popinet et al.·Apr 28, 2024SaveLearn
Micro-swimmer collective dynamics in Brinkman flowsSuspensions of swimming micro-organisms are known to undergo intricate collective dynamics as a result of hydrodynamic and collision interactions. Micro-swimmers, such as bacteria and micro-algae,…Yasser Almoteri, Enkeleida Lushi·Apr 28, 2024SaveLearn
On the inviscid instability of the 2D Taylor-Green vortexWe consider Euler flows on two-dimensional (2D) periodic domain and are interested in the stability, both linear and nonlinear, of a simple equilibrium given by the 2D Taylor-Green vortex. As the…Xinyu Zhao, Bartosz Protas, Roman Shvydkoy·Apr 27, 2024SaveLearn
Releasing trapped Taylor bubbles via centrifugation and inclinationIn confined systems, the entrapment of a gas volume with an equivalent spherical diameter greater than the dimension of the channel can form extended bubbles that obstruct fluid circuits and…Alice Marcotte, Pier Giuseppe Ledda, Valentin Buriasco et al.·Apr 27, 2024SaveLearn
Generalization capabilities and robustness of hybrid models grounded in physics compared to purely deep learning modelsThis study investigates the generalization capabilities and robustness of purely deep learning (DL) models and hybrid models based on physical principles in fluid dynamics applications, specifically…Rodrigo Abadía-Heredia, Adrián Corrochano, Manuel Lopez-Martin et al.·Apr 27, 2024SaveLearn
Interfaces as transport barriers in two-dimensional Cahn-Hilliard-Navier-Stokes turbulenceWe investigate the role of interfaces as transport barriers in binary-fluid turbulence by employing Lagrangian tracer particles. The Cahn-Hilliard-Navier-Stokes (CHNS) system of partial differential…Nadia Bihari Padhan, Rahul Pandit·Apr 27, 2024SaveLearn
Simultaneous measurement of extensional stress and flow birefringence field for uniaxially extending worm-like micellar solutionsThe present study proposes a novel and simple rheo-optical technique to investigate the relation between the rheology of complex fluids and their internal structural deformation under uniaxial…Masakazu Muto, Tatsuya Yoshino, Shinji Tamano·Apr 26, 2024SaveLearn
A mesh-constrained discrete point method for incompressible flows with moving boundariesParticle-based methods are a practical tool in computational fluid dynamics, and novel types of methods have been proposed. However, widely developed Lagrangian-type formulations suffer from the…Takeharu Matsuda, Satoshi Ii·Apr 26, 2024SaveLearn
Vaporization dynamics of a super-heated water-in-oil droplet: modeling and numerical solutionThe study of vapor bubble growth following droplet vaporization in a superheated liquid involves research areas such as hydrodynamics, heat transfer, mass transfer, and thermodynamics. The interplay…Muhammad Saeed Saleem, Michel Versluis, Guillaume Lajoinie·Apr 26, 2024SaveLearn
Developed and quasi-developed macro-scale heat transfer in micro- and mini-channels with arrays of offset strip fins subject to a uniform heat fluxIn the present work, we examine to what degree the heat transfer can be described as developed on a macro-scale level in typical micro- and mini-channels with offset strip fin arrays subject to a…Arthur Vangeffelen, Geert Buckinx, Carlo De Servi et al.·Apr 26, 2024SaveLearn
Onset of global instability in a premixed annular V-flameWe investigate self-excited axisymmetric oscillations of a lean premixed methane--air V-flame in a laminar annular jet. The flame is anchored near the rim of the centrebody, forming an inverted cone,…Chuhan Wang, Christopher M. Douglas, Yu Guan et al.·Apr 26, 2024SaveLearn
Hindered settling of log-normally distributed particulate suspensions: theoretical models vs. Stokesian simulationsSettling velocity statistics for dilute, non-Brownian suspensions of polydisperse spheres having a log-normal size distribution are analysed by Stokesian Dynamics, as a function of the total volume…Heng Li, Lorenzo Botto·Apr 26, 2024SaveLearn
The Kirkwood-Bethe hypothesis for bubble dynamics, cavitation and underwater explosionsPressure-driven bubble dynamics is a major topic of current research in fluid dynamics, driven by innovative medical therapies, sonochemistry, material treatments, and geophysical exploration. First…Fabian Denner·Apr 26, 2024SaveLearn
An Introduction to Adjoint ProblemsOriginally published as a Supplemental Appendix to Adjoint Equations in Stability Analysis, Annu. Rev. Fluid Mech. 46:493-517 (2014)Paolo Luchini, Alessandro Bottaro·Apr 26, 2024SaveLearn
Influence of ammonia-water fog formation on ammonia dispersion from a liquid spillAmmonia is expected to play an important role in the green transition, both as a hydrogen carrier and a zero-emission fuel. The use of refrigerated ammonia is attractive due to its relatively high…Hans Langva Skarsvåg, Eirik Holm Fyhn, Ailo Aasen·Apr 26, 2024SaveLearn
Parametric and inverse analysis of flow inside an obstructed channel under the influence of magnetic field using physics informed neural networksIn this study, fluid flow inside of an obstructed channel under the influence of magnetic field has been analyzed using physics informed neural networks(PINNs). Governing equations have been utilized…Ehsan Ghaderi, MohammadAli Bijarchi, Siamak Kazemzadeh Hannani et al.·Apr 26, 2024SaveLearn
Reversal of particle Migration for viscoelastic solution at high solvent viscosityThe imbalance of normal stress around a particle induces its transverse migration in pressure-driven viscoelastic flow, offering possibilities for particle manipulation in microfluidic devices.…Xavier Salas-Barzola, Guillaume Maîtrejean, Clément de Loubens et al.·Apr 26, 2024SaveLearn
On Modeling Tear Breakup Dynamics with a Nematic Lipid LayerOne of the main roles of the lipid layer (LL) of the tear film (TF) is to help prevent evaporation of the aqueous layer (AL). The LL thickness, composition, and structure all contribute to its…M. J. Taranchuk, R. J. Braun·Apr 25, 2024SaveLearn
Influence of freestream turbulence and porosity on porous disc-generated wakesThis study aims to evaluate the effect of freestream turbulence (FST) on wakes produced by discs with different porosity. The wakes are exposed to various freestream turbulence "flavours", where…Martin Bourhis, O. R. H. Buxton·Apr 25, 2024SaveLearn