Cascade-driven fragmentation-aggregation transitions in decaying turbulenceIn decaying turbulence, the turbulent cascade is not merely a passive background for breakup but an evolving stability boundary that dynamically selects the fragmentation-aggregation pathway. As…Vivek Kumar, Prasoon Suchandra, Shivam Prajapati et al.·Sep 20, 2026SaveLearn
Learning Stiffness Dependent Fluid Structure Dynamics from Coarse Flow RepresentationsThis paper develops a data-driven framework for long-term prediction of fluid--structure interaction (FSI) dynamics, focusing on the flow-induced vibration (FIV) of a flexible plate. A…Chun-Jun Pu, Li-Wei Chen, Hai-Bo Huang·Sep 19, 2026SaveLearn
An Exactly Solvable Ekman Layer with a Fractional-Order Stress ClosureThe classical theory of the wind-driven surface layer of a rotating ocean closes the momentum balance with a local flux-gradient law, in which the turbulent stress at a given depth is proportional to…Sandy Hardian Susanto Herho, Rizki Dimas Permana, Iwan Pramesti Anwar et al.·Sep 19, 2026SaveLearn
Channel confinement mollifies roll wave instabilitiesUnder certain conditions, gravity currents spontaneously develop large-amplitude streamwise undulations on their free surfaces ('roll waves'). The effect of channel geometry on this…Jake Langham, Cyril Gadal, Jamie P. Webb et al.·Sep 19, 2026SaveLearn
Equivariant Neural Prediction of the Stokes Resistance Tensors for Arbitrary Microparticle ShapesThe Stokes-flow hydrodynamics of an irregular microparticle is encoded by its grand resistance matrix, a 6x6 tensor whose translational and rotational blocks (A and C) govern settling, diffusion, and…Sanjay Pradeep, David Dandy, Candace S. J. Tsai et al.·Sep 19, 2026SaveLearn
Exact explicit wave-angle solutions for equilibrium oblique detonationsThe equilibrium oblique-detonation polar is a fundamental gasdynamic relation. This relation links the deflection angle, the wave angle, the flow state and the heat release. However, the wave angle…Jing Li, Changtong Luo·Sep 19, 2026SaveLearn
Underwater bubble transport on superhydrophobic cylindrical rodThe transport of bubbles along a curved superhydrophobic surface is not governed by buoyancy alone, but also by the interaction between the geometric confinement, the capillary and contact-line…Rajalingam A, Sunghwan Jung, Pallab Sinha Mahapatra·Sep 19, 2026SaveLearn
Modelling friction and heat transfer in turbulent forced convection over porous latticesWe perform direct numerical simulations (DNS) to investigate how cubic-lattice porous substrates influence momentum and heat transfer in turbulent channel flows. The simulations span friction…Aneek Chakraborty, Stefan Hickel, Davide Modesti·Sep 18, 2026SaveLearn
Applications of a moving surface drag model: From Stokes waves to offshore wind farmsOffshore wind farms operate within the marine atmospheric boundary layer, where ocean waves can modify air-sea momentum transfer, turbine inflow, and wake recovery. Wave-resolved simulations can…Manuel Ayala, Zein Sadek, Raul. B Cal et al.·Sep 18, 2026SaveLearn
An experimental and numerical study of the circular hydraulic jumpThis paper describes experiments and numerical simulations on the normal impact of a round liquid jet onto a horizontal surface, such as when water from a tap hits the bottom of a kitchen sink. In…Arnab Kumar Mallik, Hrvoje Jasak, D. Ian Wilson et al.·Sep 18, 2026SaveLearn
Stabilization of Yih's Viscosity Jump Interface in a ChannelTwo immiscible viscous fluids in pressure-driven channel flow can be unstable through their interface when their viscosities differ, at arbitrarily small Reynolds number --- the instability Yih found…Miroslav Krstic·Sep 18, 2026SaveLearn
An improved periodic activation for PINNs reconstructing convective flowsArchitectures with periodic activation functions have already been shown to be beneficial in comparison to monotonic counterparts for a wide range of applications of physics-informed neural networks.…Michael Mommert, Marie-Christine Volk, Christian Bauer·Sep 18, 2026SaveLearn
A multi-scale approach for wall-bounded WCSPH--RANS simulationsAchieving sufficient near-wall resolution remains challenging for wall-bounded turbulence simulations using weakly compressible smoothed particle hydrodynamics (WCSPH), as local particle refinement…Feng Wang, Nikolaus Adams, Xiangyu Hu·Sep 18, 2026SaveLearn
Periodic Neural Mapping for Unsteady Rotor-Blade Pressure and Aeroelastic Load PredictionAccurate prediction of unsteady aerodynamic loads remains a major challenge in turbomachinery design. High-fidelity Computational Fluid Dynamics (CFD) simulations are expensive, while aeroelastic…Lionel Salesses, Joachim Dominique, Tariq Benamara et al.·Sep 18, 2026SaveLearn
Relative velocity between a particle and turbulenceThe relative velocity between a particle and the surrounding fluid is a key quantity that determines the various phenomena of particle-laden turbulence, such as particle clustering and turbulence…Yutaro Motoori, Daiki Watanabe, Susumu Goto·Sep 18, 2026SaveLearn
Optimization of fluid mixing by reinforcement learning using limit cycles of a dynamical systemWe propose a method to overcome the difficulties encountered when applying reinforcement learning to fluid mixing processes. The proposed method has two main features: (i) it does not require…Masaki Shimizu, Daiki Watanabe, Takumi Aoyagi et al.·Sep 18, 2026SaveLearn
Discovery of an explicit closure dispersion model for contrast-agent transport in arteriesAt high Peclet number, the classical Taylor-Aris dispersion model becomes inadequate for early-time contrast-agent transport in arteries, while an explicit closure model and a clear physical…Yi-Teng Wang, Yu-Xing Gong, Yan Qiu et al.·Sep 18, 2026SaveLearn
Mathematical modeling on peristaltic flow of a Prandtl fluid with effects of slip conditions and inclined magnetic fieldThe manuscript provides a description of a theoretical analysis of a non-Newtonian Prandtl fluid subject to peristaltic flow through an inclined asymmetric channel. We explore the effect of an…Sabia Asghar, Fred J. Vermolen·Sep 18, 2026SaveLearn
Iterative Construction of n-Dimensional Navier-Stokes Solutions with Non-Gradient ConvectionExact periodic solutions of the incompressible Navier-Stokes equations arise when the convective field is a pure gradient and can be absorbed into the pressure. We construct solutions outside this…R. K. Michael Thambynayagam·Sep 17, 2026SaveLearn
Solutions of the Navier-Stokes Equation Through Affine Transformations: The Triad TripletConsidering triads in helical decomposition of three dimensional Navier-Stokes turbulence, three consecutive triads of the same shape and class, where the reference wave-number appears as the…Ö. D. Gürcan, L. Manfredini, P. Morel·Sep 17, 2026SaveLearn
Mean flow scaling in stably stratified temporally developing turbulent boundary layersStably stratified wall-bounded turbulence governs the dynamics of many environmental and engineering flows. A key challenge is characterizing how stratification modifies mean and turbulent profiles.…Baptiste Hardy, Pedro Costa·Sep 17, 2026SaveLearn
Mixed-precision GPU algorithms for efficient turbulent flow simulations with Raviart-Thomas finite elementsWe propose GPU algorithms for high-fidelity simulation of incompressible turbulent flows. Discretization in space is performed with H(div)-conforming high-order Raviart-Thomas finite elements for the…Ivan Prusak, Enes Mustafa Soydan, Ivan Pribec et al.·Sep 17, 2026SaveLearn
Experimental study of the impact dynamics of polymeric hollow dropletsThe impact dynamics of hollow droplets, while influential in applications such as coating and spraying, remain less explored than their dense counterparts. In particular, the impact dynamics of…Mohammad Mahdi Nasiri, Mohammad Reza Daneshvar Garmroodi, Damian Vadillo et al.·Sep 17, 2026SaveLearn
Well-posedness of neural turbulence closures and tangent dissipationA neural turbulence closure defines a new boundary-value problem, R(U)=N(U)+F(U)=0, with a coupled Jacobian J(U)=N'(U)+F'(U), where N is the original mean-flow operator and F the…Zhen Zhang, George Em Karniadakis·Sep 17, 2026SaveLearn
IB-Flows: an open-source multi-GPU immersed boundary code for fluid-structure interactionWe present IB-Flows, an open-source, multi-GPU solver for the direct numerical simulation of incompressible fluid-structure interaction (FSI) problems. The code couples a second-order…Giovanni Vagnoli, Martino Andrea Scarpolini, Fabio Guglietta et al.·Sep 17, 2026SaveLearn