Revisiting the mixing length scaling in pressure-gradient turbulent boundary layers via a symmetry approachA century after Prandtl's mixing length hypothesis, full-profile scaling of the mixing length in pressure-gradient turbulent boundary layers (PG TBLs) remains debated, especially for adverse pressure…Weitao Bi·Apr 29, 2026SaveLearn
Coherent structures in Newtonian and viscoelastic turbulent planar jetsThe addition of a small amount of long-chain polymers confers viscoelastic properties to Newtonian flows. The resulting non-Newtonian solution now exhibits different dynamics, such as enhanced mixing…Christian Amor, Adrián Corrochano, Giovanni Soligo et al.·Apr 29, 2026SaveLearn
Exploiting repeated matrix block structures for more efficient CFD on modern supercomputersComputational Fluid Dynamics (CFD) simulations are often constrained by the memory-bound nature of sparse matrix-vector operations, which eventually limits performance on modern high-performance…Josep Plana-Riu, F. Xavier Trias, Àdel Alsalti-Baldellou et al.·Apr 29, 2026SaveLearn
Scale- and Structure-Dependent Fractal Dimensions in a Two-Dimensional Atomizing Liquid JetAtomization stretches and folds the liquid-gas interface before fragmenting it into ligaments and droplets, making fractal measures a natural descriptor of the breakup state. We examine this idea in…Guangnian Ji, Yash Kulkarni, Stéphane Zaleski·Apr 28, 2026SaveLearn
Discovery of Sparse Invariant Subgrid-Scale Closures via Dissipation-Controlled Training for Large Eddy Simulation on Anisotropic GridsNeural networks offer highly expressive turbulence closures, yet their complexity obscures the physical mechanisms they aim to model, and their computational cost can limit their tractability. To…Samantha Friess, Aviral Prakash, John A. Evans·Apr 28, 2026SaveLearn
Minimum-enstrophy solutions in topographic quasi-geostrophic flow on the rotating sphereThe minimum-enstrophy theory of Bretherton and Haidvogel postulates that two-dimensional turbulent systems evolve to a state that minimises enstrophy at a fixed energy level. We extend this to the…Sagy Ephrati, Erik Jansson·Apr 28, 2026SaveLearn
Control-oriented cluster-based reduced-order modellingThis work addresses the challenge of learning reduced-order models (ROMs) capable of generalizing to unobserved dynamical regimes across unseen control parameters. We introduce the Control-oriented…Paolo Olivucci, David E. Rival, Richard Semaan·Apr 28, 2026SaveLearn
The Wooding problem revisitedThe threshold conditions to convective instability in a semi-infinite porous layer saturated by a fluid are determined. The classical setup for this problem in geothermal fluid dynamics was…A. Barletta, D. A. S. Rees·Apr 28, 2026SaveLearn
Inertial focusing of neutrally buoyant spherical particle in shallow microchannelsThis study investigates the lift force acting on a finite-size, neutrally buoyant spherical particle suspended in a liquid while flowing through a shallow channel at low Reynolds numbers. Using an…Guiquan Wang, Willem Van Roy, Chengxun Liu et al.·Apr 28, 2026SaveLearn
From wake dynamics to energy consumption in free-swimming biohybrid robotic jellyfish: a multiscale analysisMeasuring energy consumption of marine organisms often requires enclosing the animal in a small, sealed chamber to quantify changes in oxygen concentration of the surrounding water. This can limit…Simon R. Anuszczyk, Kyra Phaychanpheng, John O. Dabiri·Apr 28, 2026SaveLearn
Non-Oberbeck-Boussinesq effects in coldwaterWater exhibits an anomalous nonlinear temperature-density (-T) relation as it approaches freezing, along with an increase in viscosity, and a decrease in thermal conductivity. These…Gustavo Estay, Daisuke Noto, Hugo N. Ulloa·Apr 27, 2026SaveLearn
Mass-Transfer Control With Microbubbles in Highly Turbulent Decaying FlowsWe hypothesize that combining extreme turbulence with a minute reduction in surface tension σ (surface tension of the liquid) using surfactant provides a simple and scalable route for…Vivek Kumar, Prasoon Suchandra, Jason Rom et al.·Apr 27, 2026SaveLearn
Exact dispersion relation for linear surface waves on arbitrary vertical shearWe derive the formal solution to the dispersion relation for linear surface waves on a horizontal mean current with arbitrary vertical dependence. The problem is cast in a Green's function framework…Kjell S. Heinrich, Simen Å. Ellingsen·Apr 27, 2026SaveLearn
Stable fluid-rigid body interaction algorithm using the direct-forcing immersed boundary method (DF-IBM)The direct-forcing immersed boundary method (DF-IBM) algorithm previously developed by the authors is extended by coupling the Navier-Stokes equations with the Newton-Euler equations for rigid body…E. Farah, A. Ouahsine, P. G. Verdin et al.·Apr 27, 2026SaveLearn
Numerical Investigation of Elastically-Mounted tandem Cylinders using an ALE Runge-Kutta Discontinuous Galerkin methodThis work presents a high-order Arbitrary-Lagrangian-Eulerian (ALE) Discontinuous Galerkin framework for simulating multi-body Vortex-Induced Vibrations. The ALE formulation extends a Runge-Kutta…Alexios Papadimitriou, Spyridon Zafeiris, George Papadakis·Apr 27, 2026SaveLearn
A Particle Multi-Relaxation Bhatnagar-Gross-Krook Method for Rarefied Monatomic Gas MixturesKinetic models based on the Bhatnagar-Gross-Krook (BGK) framework provide an efficient alternative to the Boltzmann equation for rarefied gas flows; however, existing formulations for gas mixtures…Inchan Kim, Joonbeom Kim, Woonghwi Park et al.·Apr 27, 2026SaveLearn
Intermittency-Driven Turbulence Cascade Memory Extends the Markov-Einstein Coherence Length Beyond the Canonical EstimateUsing direct numerical simulation of forced isotropic turbulence at Reλ ≈ 1300 and ≈ 433, together with two independent Markov-by-construction null surrogates, we…Y. Sungtaek Ju·Apr 27, 2026SaveLearn
Improved global stability bounds for two-dimensional plane Poiseuille flowThis work provides new lower bounds on the global (nonlinear) stability limit of pressure-driven two-dimensional plane Poiseuille flow, improving on the energy stability limit, ReE, originally…Vicente Iligaray, Danilo Aballay, Federico Fuentes·Apr 26, 2026SaveLearn
An LES model with finite-rate phase change and subgrid spray based on a thermodynamically consistent four-equation multiphase modelIn this work, an LES model with finite-rate phase change and subgrid spray based on a high-resolution numerical scheme for multiphase multi-component simulations which satisfies interface equilibrium…Henry Collis, Shahab Mirjalili, Makrand Khanwale et al.·Apr 26, 2026SaveLearn
On the stability of large-amplitude gravity-capillary surface wavesWe consider the stability of periodic gravity-capillary waves of finite amplitude for small values of the surface tension. Linear stability with respect to both superharmonic and subharmonic…Josh Shelton, Adam Rook·Apr 26, 2026SaveLearn
Linear feedback control of liquid film on moving substrate via free-surface stressesLiquid films on moving substrates are used in dip-coating processes to form uniform protective layers. Controlling free-surface waves is essential due to the film's inherent linear instability.…Fabio Pino, Benoit Scheid, Miguel A. Mendez et al.·Apr 26, 2026SaveLearn
Relation between the Nusselt and Bejan numbers in natural convectionThis study derives a scaling law connecting the Nusselt (Nu) and Bejan (Be) numbers in natural convection. Combining entropy generation analysis with boundary-layer scaling, the relation Be-1 - 1 =…Takuya Masuda, Toshio Tagawa·Apr 26, 2026SaveLearn
Compressible fluids with distinct mass and linear-momentum transportWe formulate a thermodynamically consistent continuum theory for compressible, viscous, heat-conducting fluids in which the velocity entering the balance of mass is distinguished from the specific…Luis Espath, Eliot Fried·Apr 26, 2026SaveLearn
Capillary effects on preferential orientation of floaters in gravity wavesWe study the influence of capillary effects on the motion of thin elastic plates denser than water drifting in propagating surface gravity waves. Such floaters experience a mean angular drift that…Basile Dhote, Ewen Le Ster, Wietze Herreman et al.·Apr 26, 2026SaveLearn
Physics-Informed Temporal U-Net for High-Fidelity Fluid InterpolationReconstructing high-fidelity fluid dynamics from sparse temporal observations is quite challenging, mainly due to the chaotic and non-linear nature of fluid transport. Standard deep learning-based…Eshwar R. A., Nevin Mathew Thomas, Nehal G et al.·Apr 25, 2026SaveLearn