physics.flu-dyn papers | Gist.Science

Fluid dynamics explores how liquids and gases move, shaping everything from weather patterns to the flow of blood through our veins. This field bridges the gap between abstract mathematical equations and the tangible forces that drive our physical world, offering insights into turbulence, aerodynamics, and fluid behavior in complex environments.

On Gist.Science, we process every new preprint in this category directly from arXiv to make cutting-edge research accessible to everyone. Each paper is transformed into a clear, plain-language overview alongside a detailed technical summary, ensuring both students and experts can grasp the latest findings without getting lost in dense jargon.

Below, you will find the most recent studies in fluid dynamics, curated and explained for a broader audience.

Impact of Structure-Preserving Discretizations on Compressible Wall-Bounded Turbulence of Thermally Perfect Gases

This study demonstrates that for direct numerical simulations of compressible wall-bounded turbulence in thermally perfect gases, the consistency between structure-preserving discretizations and the thermodynamic model is critical for accurately capturing turbulence statistics and mean flow properties, particularly at high Mach numbers where entropy conservation and pressure discretization coupling significantly influence dynamical fields.

Alessandro Aiello, Andrea Palumbo, Carlo De Michele, Gennaro Coppola2026-02-23🔢 math

The influence of body anisotropy on wake characteristics and enstrophy production for prolate ellipsoids at $\mathrm{Re}_{D} = 10,000$

This study utilizes Large Eddy Simulation to demonstrate that increasing body anisotropy in prolate ellipsoids at $\mathrm{Re}_{D} = 10,000$ promotes early boundary layer separation and higher drag, while uniquely inducing sustained negative enstrophy production near the poles due to specific streamline contraction and unstable focus/compressing flow topologies.

Sartaj Tanweer, Mukesh Sharma, Aditya R. Nayak, Edwin Malkiel, Michael Twardowski, Siddhartha Verma2026-02-23🔬 physics

Optimization of Higher-Order Harmonic Surface Tessellations for Additively Manufactured Air-to-Air Heat Exchangers

This study demonstrates that an optimized higher-order harmonic surface tessellation, developed through an analytical and numerical framework, outperforms conventional gyroid TPMS structures in turbulent flow regimes by achieving a superior balance of high thermal effectiveness and lower pressure drop, with secondary surface wave frequency identified as the critical design parameter.

Patrick Adegbaye, Aigbe E. Awenlimobor, Justin An, Zhang Xiao, Jiajun Xu2026-02-23🔬 physics

Manifestation of spurious currents and interface regularization in wind turbulence over fast-propagating waves

This study systematically evaluates how spurious currents and interface regularization techniques impact the accuracy of wind turbulence simulations over fast-propagating waves, identifying curvature estimation and flux discretization as critical factors in minimizing numerical errors that otherwise compromise predicted turbulence statistics.

Hanul Hwang, Catherine Gorle2026-02-23🔬 physics

Exact response functions for a compressible thin fluid layer with odd viscosity

This paper derives exact analytical solutions for the flow and pressure fields in a compressible thin fluid layer with odd viscosity supported by a lubrication layer, providing insights into how odd viscosity influences hydrodynamic interactions and the dynamics of colloidal particles and microswimmers in chiral active fluids.

Abdallah Daddi-Moussa-Ider, Yuto Hosaka, Shigeyuki Komura2026-02-23🔬 cond-mat

Measured multiple flow states in turbulent thermal convection with aspect ratio 10

This study experimentally demonstrates that turbulent Rayleigh-Benard convection in a large-aspect-ratio cell exhibits multiple self-organized flow states with varying numbers of stacked rolls, where the initial conditions and Prandtl number significantly influence the flow structure, global momentum transport scaling, and heat transfer efficiency.

Yi-Zhen Li, Jun-Jie Huo, Xin Chen, Heng-Dong Xi2026-02-23🔬 physics

Vortex breakdown in a hydro turbine draft tube swirling jet

This paper investigates the bifurcation mechanisms of vortex breakdown in a laminar swirling jet within a hydro turbine draft tube, demonstrating how wall friction influences the transition from axisymmetric flow to helical vortex ropes through supercritical Hopf, transcritical, and hysteresis-inducing subcritical bifurcations across different turbine load regimes.

Artur Gesla, Eunok Yim2026-02-23🔬 physics

Solutocapillary bubble centering in a confined ethanol plume in water

This study demonstrates that solutocapillary (Marangoni) forces driven by ethanol-water concentration gradients reliably center gas bubbles along the axis of a confined ethanol plume in water, offering a robust, contact-free mechanism for bubble manipulation in microfluidic and reactor applications.

Tobias Baier, Steffen Bisswanger, Sebastian Dehe, Steffen Hardt2026-02-23🔬 physics

Large traveling capillary-gravity waves for Darcy flow

This paper establishes the existence of large periodic traveling capillary-gravity waves for Darcy flow in porous media and Hele-Shaw cells, proving that a local curve of small solutions extends to a global connected set containing waves with arbitrarily large gradients or those approaching the rigid bottom.

Huy Q. Nguyen2026-02-20🔬 physics

Transverse Instability of Stokes Waves at Finite Depth

This paper rigorously proves that Stokes waves at finite depth exhibit transverse spectral instability, characterized by unstable eigenvalues lying approximately on an ellipse, for all but finitely many depth values, thereby extending previous infinite-depth results despite the increased mathematical complexity.

Ryan P. Creedon, Huy Q. Nguyen, Walter A. Strauss2026-02-20🔬 physics

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physics.flu-dyn