Flocking and mesoscale turbulence in three-dimensional active fluidsWe numerically study the three-dimensional turbulence in a minimal model of an active fluid--the Toner-Tu-Swift-Hohenburg equation. For small activity, we observe bacterial turbulence, while for…Prasad Perlekar·Jan 25, 2026SaveLearn
Analysis of inviscid shear instability of axisymmetric flowsSimple analytical criteria are derived to determine whether axisymmetric base flows in annuli and pipes are stable or unstable. Both axisymmetric and non-axisymmetric inviscid disturbances are…Kengo Deguchi, Haider Munawar, Runjie Song·Jan 25, 2026SaveLearn
Gravity Wave Interactions in the Stratocumulus-Topped Boundary LayerThis work studies the breakup propensity of the stratocumulus-topped boundary layer (STBL) interacting with gravity waves using large-eddy simulation with a uniform vertical grid of 5 m and…Arun Balakrishna, Hao Fu, Parviz Moin et al.·Jan 24, 2026SaveLearn
Fully Turbulent Wakes at Low Reynolds Numbers: the Case of the Thin Flat PlateWe consider the wake flow past a thin two-dimensional flat plate normal to the uniform stream and demonstrate that this flow is turbulent already at a relatively low Reynolds number of Re = 400.…Isaac T. Rosin, Melanie S. Chapman, Bartosz Protas et al.·Jan 24, 2026SaveLearn
Wind-turbine wake effects on the rate of accumulation of fatigue damage in overhead conductorsGuidance relating to the safe distance within which overhead conductors (OHCs) should not be built with respect to a wind turbine, and vice versa, varies from country to country. In the United…Francisco J. G. de Oliveira, Kevin Gouder, Zahra Sharif Khodaei et al.·Jan 24, 2026SaveLearn
Convective scalar transport from spherical drops in complex shearing flowsWe calculate the scalar transport rate, as characterized by the Nusselt number\,(Nu), from a neutrally buoyant spherical drop in an ambient linear flow, in the absence of inertia and in the strong…Sabarish V. Narayanan, Ganesh Subramanian·Jan 24, 2026SaveLearn
Thermodynamically consistent large-eddy simulation modelsFiltered budgets for anelastic turbulence and a general expression of the turbulent sensible heat flux are derived for a multicomponent fluid with an arbitrary equation of state. A family of…Thomas Dubos·Jan 23, 2026SaveLearn
Numerical investigation of unsteady flow in a reversible pump-turbineHydropower is an important source of renewable energy that provides clean energy. Pump-turbine type hydraulic turbine is widely used to mitigate the intermittent energy demand and store a large-scale…Chirag Trivedi·Jan 23, 2026SaveLearn
Relation between the moments of longitudinal velocity derivatives and of dissipation in turbulenceIn homogeneous and isotropic turbulence, measurements of the longitudinal velocity derivative, ∂1 u1, make it possible to estimate a surrogate of the rate of energy dissipation per unit…Ping-Fan Yang, Haitao Xu, Alain Pumir·Jan 23, 2026SaveLearn
The broken link between space and time in elastic turbulenceElastic turbulence (ET), observed in flows of sufficiently elastic polymer solution at small inertia, is characterized by chaotic motions and power-law scaling of energy spectrum (E) in both…Giulio Foggi Rota, Rahul K. Singh, Alessandro Chiarini et al.·Jan 23, 2026SaveLearn
Studying propagating turbulent structures in the near wake of a sphere using Hilbert proper orthogonal decompositionTurbulent flows, despite their apparent randomness, exhibit coherent structures that underpin their dynamics. Proper orthogonal decomposition (POD) has been widely used to extract these structures…Shaun Davey, Callum Atkinson, Julio Soria·Jan 23, 2026SaveLearn
Elucidating Three-Dimensional Coherent Structures in a Multi-Stream JetNominal two-dimensional (2D) shear layers have been studied extensively, and their principal dynamics are well understood. In practical configurations, however, the behavior of such shear layers is…Mitesh Thakor, Datta V Gaitonde, Yiyang Sun·Jan 22, 2026SaveLearn
A Study of Improved Limiter Formulations for Second-Order Finite Volume Schemes Applied to Unstructured GridsA general, compact way of achieving second-order in finite-volume numerical methods is to perform a MUSCL-like, piecewise linear reconstruction of flow properties at each cell interface. To avoid the…Frederico Bolsoni Oliveira, João Luiz F. Azevedo·Jan 22, 2026SaveLearn
Assimilating rough features: A data-driven framework to infer rough wall properties from sparse experimental dataSurface roughness influences turbulent boundary layers (TBLs) primarily through the roughness function U+ and the equivalent sand-grain roughness height \(ks\). Direct determination of…Martina Formichetti, Uttam Cadambi Padmanaban, Ping He et al.·Jan 22, 2026SaveLearn
Turbulent hydrogen premixed flames at high pressure and high temperatureThe combined influence of elevated pressure and temperature, representative of gas-turbine operating conditions, on lean premixed hydrogen flames is investigated using Direct Numerical Simulations…Sofiane Al Kassar, Sara Cantagalli, William Lauder et al.·Jan 22, 2026SaveLearn
Numerical Aspects of Gradient Reconstruction Schemes Applied to Complex GeometriesThis work primarily focuses on the study of three gradient reconstruction techniques applied to the calculation of viscous terms in a cell-centered, finite volume formulation for general unstructured…Frederico Bolsoni Oliveira, João Luiz F. Azevedo·Jan 21, 2026SaveLearn
Study of the Effects of Artificial Dissipation and Other Numerical Parameters on Shock Wave ResolutionThe effects induced by numerical schemes and mesh geometry on the solution of two-dimensional supersonic inviscid flows are investigated in the context of the compressible Euler equations. Five…Frederico Bolsoni Oliveira, João Luiz F. Azevedo·Jan 21, 2026SaveLearn
Dynamical Characteristics of the Body-Caudal Fin Joint of a Carangiform Swimmer and its Influence on HydrodynamicsThe hydrodynamics of fish swimming depend on the interaction between the undulation of the body and the flapping of the caudal fin. This study develops a computational framework of a…Dev Pradeepkumar Nayak, Muhammad Saif Ullah Khalid, Ali Tarokh·Jan 21, 2026SaveLearn
Maximal spreading of impacting viscoelastic dropletsDroplet impact and spreading on solid substrates are well understood for Newtonian fluids, yet how viscoelasticity alone modifies the maximal spreading remains unclear. To identify the mechanisms…Orr Avni, Dongyue Wang, Mithun Ravisankar et al.·Jan 21, 2026SaveLearn
On the testing of grain shape corrections to bedload transport equations with grain-resolved numerical simulationsUsing grain-resolved LES-DEM simulations, Zhang et al. (J. Geophys. Res. Earth Surf. 130, e2024JF007937, 2025) aimed to validate a grain-shape-corrected bedload transport equation proposed earlier by…Yulan Chen, Orencio Durán, Thomas Pähtz·Jan 21, 2026SaveLearn
Model-Driven Conditional Fourier Neural Operator for Spectrum-Consistent Synthetic Turbulence GenerationThis short note proposes a model-driven conditional Fourier neural operator (MD-CFNO) for synthetic turbulence generation. Spectrum-consistent synthetic turbulence is essential for inflow boundary…Hongyuan Lin, Shizhao Wang·Jan 21, 2026SaveLearn
From Columns to Heaps: Dimensionless Similarity with PSD-Distributed Damk\"ohler Numbers and Dual-Porosity FlowThis work develops a unified, dimensionless framework for comparing geometrically similar reacting porous-flow systems across scale, with emphasis on hydrometallurgical heap leaching, when particle…Juan J. Segura·Jan 20, 2026SaveLearn
Rigid Body Dynamics in Ambient FluidsWe present a novel framework for rigid body dynamics in ambient media, such as air or water, enabling accurate motion prediction of objects without requiring computational fluid dynamics simulations.…Marcel Padilla, Aviv Segall, Olga Sorkine-Hornung·Jan 20, 2026SaveLearn
Diffusion Model Driven Airfoil Design: From Geometry Encoding to Practical ApplicationsDiffusion model, the state-of-the-art generative machine learning architecture, has shown promising results airfoil inverse designs. In this study, we implemented and trained a series of diffusion…Yingfan Geng, Jinhong Wang, Teng Cao·Jan 20, 2026SaveLearn
Flash Freeze--Thaw Phenomenon in Sprayed Evaporating Micrometer DropletsTwo-fluid spray nozzles are widely used in combustion, chemical processing, pharmaceutical coating, environmental control, and spray drying to atomize liquids with pressurized gas. However, the…Junshi Wang, Zehao Pan, Howard A. Stone et al.·Jan 20, 2026SaveLearn