Why gas-focused microjets are so fast: kinetically resolved, shear-driven flow focusing in vacuumGas-focused liquid microjets -- the flow-focusing sample delivery on which serial femtosecond crystallography depends -- reach speeds several times the pressure-driven (Bernoulli) bound, unexplained…Alfonso M. Ganan-Calvo·Jul 15, 2026SaveLearn
Scale-conditioned structure-based closure for homogeneous turbulence: Ray-Column Interacting Particle Representation ModelThe particle representation model (PRM) and interacting particle representation model (IPRM) describe homogeneous turbulence through orientation-conditioned structural states. In their original form,…Stavros C. Kassinos·Jul 15, 2026SaveLearn
Sign-Indefinite Helicity and the Structure of Weak Turbulence in Inertial and Non-Hermitian WavesWe investigate how sign-indefinite quadratic invariants shape turbulent cascades in incompressible flows with broken time-reversal symmetry, where the dynamics supports strongly anisotropic…Shahaf Aharony Shapira, Michal Shavit·Jul 15, 2026SaveLearn
Libby-Fox perturbations and the semi-analytic adjoint solution for laminar viscous flow along a flat plateThe properties of the solution to the adjoint two-dimensional boundary layer (BL) equations on a flat plate are investigated from the viewpoint of Libby-Fox theory, which describes the algebraic…Carlos Lozano, Jorge Ponsin·Jul 15, 2026SaveLearn
Can Explicit Subgrid Models Enhance Implicit LES Simulations? A Very High-Order Solver PerspectiveHigh-order discontinuous Galerkin (DG) methods offer excellent accuracy for turbulent-flow simulations and are increasingly attractive on GPU-oriented architectures, where high polynomial orders can…Gonzalo Rubio, Gerasimos Ntoukas, Miguel Chávez-Módena et al.·Jul 15, 2026SaveLearn
Generating synthetic evolution of turbulent flames with an experimental data-based spatiotemporal diffusion modelIn this study, a conditional diffusion model -- a class of generative machine learning models -- is developed to generate synthetic, experimental data-based trajectories of turbulent flames.…Amrit Tarur, Shivam Barwey·Jul 14, 2026SaveLearn
A Unified Gradient Theory for Frame-Indifferent Rates of Tensorial Internal VariablesWe develop a thermodynamically consistent framework for weakly nonlocal continua with tensor-valued internal variables. Let L=gradv, with stretching tensor…Luis Espath·Jul 14, 2026SaveLearn
Mixing and sharpening at the interface of a two-layer fluid forced by random jetsUnderstanding mixing at density interfaces is essential for predicting transport in stratified environmental flows. Laboratory studies have mostly relied on steady, spatially uniform forcing, whereas…Noé Clavier, Hugo Pradel, Romain Volk et al.·Jul 14, 2026SaveLearn
Gradient-free learning of a closed-loop wall controller for turbulent drag reductionClosed-loop wall controllers learnt by multi-agent reinforcement learning are usually trained on periodic boxes far smaller than the flows they are meant to drive, and a large part of their drag…Giorgio Maria Cavallazzi, Miguel Pérez Cuadrado, Alfredo Pinelli·Jul 14, 2026SaveLearn
Aerosol generation by the splashing of low viscosity drops impacting liquid layersUsing theory and numerical simulations, here we describe the early stages of the impact with a velocity V of a drop of radius Rd of a low viscosity liquid such as water against a layer of…Guillaume Riboux, José Manuel Gordillo·Jul 14, 2026SaveLearn
Variable-Lattice-Density Optimization of Pin-Fin Heat Sinks under High-Reynolds-Number Flow ConditionsThis study extends variable-lattice-density optimization to high-Reynolds-number flows for the design of periodically arranged pin-fin heat sinks. Effective permeability and drag coefficient are…Yoshikatsu Furusawa, Kunitaka Shintani, Shunsuke Hirotani et al.·Jul 14, 2026SaveLearn
Emergent coordination and propulsion of a model spherical ciliateA longstanding challenge in biofluid dynamics research is a mechanistic understanding of the coordinated movement of motile cilia and its resulting ability to facilitate fluid transport. In this…Hang Su, Timothy A Westwood, Eric E Keaveny·Jul 14, 2026SaveLearn
Self-similar Worthington jetsWhen a micron-sized bubble bursts, capillary waves deform the cavity into a cone that ejects a Worthington jet. The jet is born by inertial focusing, and the local collapse follows self-similar Euler…José M. Gordillo, Javier Rodríguez-Rodríguez, Vatsal Sanjay·Jul 14, 2026SaveLearn
Divide and conquer complex flows. Part I: cluster and manifold-based local analysisThis work is a two-part study on the description and prediction of complex fluid flows through the partitioning of the flow domain. In this first part, we propose a framework for a global description…Qihong L. Li-Hu, Guy Y. Cornejo Maceda, Andrea Ianiro et al.·Jul 14, 2026SaveLearn
Coherence as Thermodynamic Organization: Toward a Non-Equilibrium Turbulence TheorySince the foundational studies in the late nineteenth century, fluid turbulence has stood as a profound, unsolved challenge in classical physics. Much of this enduring difficulty stems from…Sharath S. Girimaji·Jul 13, 2026SaveLearn
Feature-based manifold model of actuated wakesWe propose a feature-based reduced-order model to predict the transient dynamics of bluff-body wakes under arbitrary time-varying actuation. Starting point is a control-oriented POD Galerkin modeling…Alicia Rodríguez-Asensio, Guy Y. Cornejo Maceda, Bernd R. Noack et al.·Jul 13, 2026SaveLearn
Wall-scaled eddies and embedded shear layers in high-Reynolds-number moderate adverse-pressure-gradient boundary layersThis study compares high-Reynolds-number turbulent boundary layers under zero and low-to-moderate adverse pressure gradients, showing similar scaling and energy contributions from the wall-scaled…Ahmad Zarei, Mitchell Lozier, Ivan Marusic et al.·Jul 13, 2026SaveLearn
Distinguished Scaling and UTSD Structure in Weak Shock Reflection at Nearly Glancing IncidenceWe study weak shock reflection from a rigid wall in the joint limit of weak shock strength and nearly glancing incidence. In the distinguished scaling =1+λα2, the inner reflection region is…Justin Kin Jun Hew·Jul 13, 2026SaveLearn
Invariant Guided PINN for Fluid Flow ComputationPhysics-informed neural networks (PINNs) often become difficult to optimize for incompressible flow problems with large spatial domains, multiscale stresses, or long-time invariant dynamics. We…Zheng Lu, Jiwei Jia, Bora Aniruddha et al.·Jul 13, 2026SaveLearn
Turbulence teaches equivariance to neural networksWe show that the rotational nature of turbulence affects how neural networks learn mappings between quantities governed by the Navier-Stokes equations. We train super-resolution models at different…Ryley McConkey, Julia Balla, Jeremiah Bailey et al.·Jul 13, 2026SaveLearn
Integral modelling of weakly evaporating 3D liquid film with variable substrate heatingAnalysing the dynamics of phase-changing liquid films is essential for enhancing the performance of thermal management systems. Still, direct simulation of the full governing equations is…Fabio Pino·Jul 13, 2026SaveLearn
Clapping propulsion and thin vortex rings: a computational study of vortex dynamics, energy equivalence, and core potential energyWe report a computational study of clapping propulsion using two thin rigid plates forming a 60-degree interplate cavity that generates a thrust-producing jet during closure. Plate kinematics are…Suyog V. Mahulkar, Jaywant H. Arakeri·Jul 13, 2026SaveLearn
Secondary Flows and Near-Wall Turbulence in Channel Flow with Longitudinal RibsThis study employs the Large Eddy Simulation (LES) to investigate secondary flows and near-wall turbulence induced by two types of surface-mounted longitudinal ribs, namely rectangular and…Ranjan Kushwaha, S. Sarkar, Gautam Biswas·Jul 12, 2026SaveLearn
The critical radius of compressible capillary drops: viscosity, thermodynamics, and diffuse-interface scalesA compressible capillary drop differs from an incompressible one in that its radius is a dynamical degree of freedom. When the drop is sufficiently small, this spherical mode can become unstable,…Umpei Miyamoto·Jul 12, 2026SaveLearn
Conversions between kinetic and surface energy in periodically forced multiphase turbulenceIn multiphase flows, kinetic and interfacial energies coexist, and their mutual conversion can potentially influence the overall energy balance. However, in statistically steady flows these energy…Jonathan Vahé, Fabien Thiesset·Jul 12, 2026SaveLearn