989 papers
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.
This paper establishes a low-dimensional dynamical framework for two-dimensional vertical falling films to identify and characterize exact coherent states—such as travelling waves, relative periodic orbits, and equilibria—that underpin the system's chaotic interfacial dynamics.
This paper extends the Statistical State Dynamics framework to shallow water magnetohydrodynamic turbulence, demonstrating how the interplay of Reynolds and Maxwell stresses leads to the formation and equilibration of zonal jet-toroidal field structures that explain both steady phenomena like solar super-rotation and time-dependent events such as the solar cycle.
This paper presents a reduced mathematical model based on center manifold theory for open cavity flow, which successfully captures key dynamics such as unstable quasi-periodic edge states and limit-cycle switching by explaining the stability exchange through cross-coupling terms in amplitude equations.
This paper establishes a hydrodynamic framework for force dipoles in compressible membranes with odd viscosity by deriving an exact Green tensor that reveals distinct dynamical regimes and chiral observables, such as transverse drift and relative motion, arising from the interplay of shear, compressional, and odd-viscous modes.
This paper proposes a trajectory-driven global optimization framework, inspired by CMA-ES, that enables unified, high-fidelity structural-hydrodynamic modeling of underwater underactuated and soft robotic systems by simultaneously identifying coupled internal and external parameters, achieving accurate real-to-sim consistency across diverse mechanisms without manual retuning.
This paper demonstrates that a shape-changing microswimmer, guided by reinforcement learning to adapt its aspect ratio based on local flow signals, can robustly maximize its displacement in turbulent environments, outperforming fixed-shape strategies and revealing a physically interpretable control paradigm for navigation in complex flows.
This paper demonstrates that the transition between weak- and strong-field dynamo regimes in spherical shells is characterized by a breaking of equatorial symmetry, which is triggered by the sudden growth of the magnetic field and subsequently sustains the strong-field branch.
This study demonstrates that aerofoil shape optimisation for curvilinear blade kinematics is effective only in high-solidity configurations where light dynamic stall allows geometric modifications to suppress leading-edge vortex separation, whereas deep dynamic stall renders such optimisation ineffective due to dominant flow separation.
This paper investigates the nonlinear evolution of the Sun's most prominent high-latitude inertial mode () on a differentially rotating sphere, demonstrating through direct numerical simulations that it undergoes a supercritical Hopf bifurcation where Reynolds stresses smooth the differential rotation to saturate the instability at amplitudes comparable to solar observations.
This paper demonstrates that the macroscopic behavior of non-equilibrium two-phase flow in porous media can be successfully predicted by mapping droplet distributions onto an equilibrium spin-glass model derived via machine learning and the maximum entropy principle, revealing that the transition to a glassy flow regime with hysteresis and non-linear dynamics coincides with the spin-glass phase transition.