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 utilizes an optimized microfluidic device to demonstrate that while *Escherichia coli* exhibits a chemotactic drift velocity proportional to the logarithmic gradient of chemoattractants in fluid, this response is significantly inhibited when the bacteria are on surfaces.
This study utilizes a large-scale, patient-specific computational fluid dynamics framework to demonstrate that specific abdominal aortic aneurysm geometric features reliably dictate hemodynamic patterns, suggesting these geometry-driven flow signatures can serve as valuable biomarkers for predicting aneurysm growth and rupture risk.
This study combines lattice Boltzmann simulations and hydrodynamic theory to demonstrate how particle shape, channel confinement, and fluid inertia collectively dictate the translational velocity, optimal aspect ratio, and complex oscillatory or spiral trajectories of driven spheroids in microfluidic flows.
This study demonstrates that the dominant mechanism driving enhanced flow resistance in viscoelastic porous media depends on the specific interplay between fluid rheology and geometric disorder, where shear-thinning fluids exhibit resistance correlated with chaotic fluctuations while constant-viscosity fluids show resistance driven by extensional viscosity effects that are sensitive to disorder only in aligned post arrays.
This experimental study investigates how the "pumping" maneuver, involving periodic pitching oscillations of a windsurf sail, enhances drive force and extends the effective angle of attack range compared to static conditions, while also increasing detrimental drift forces, thereby providing data to optimize athlete performance and velocity prediction models.
This paper presents a multi-scale analysis of solute transport and adsorption in graded porous filters by deriving a generalized macroscopic model that departs from standard solenoidal constraints to account for non-equilibrium coupling between concentration and velocity, revealing how porosity gradients and mixture dynamics critically influence filtration efficiency and optimal design.
This study experimentally investigates how water salinity and ice inclination affect the melting of ice blocks in quiescent saline water, revealing five distinct surface morphologies and demonstrating that increased salinity produces smaller, more uniform scallops while inducing a non-monotonic relationship with melt rate, whereas inclination has minimal impact on the overall melting speed.
This experimental study of high-Reynolds-number shear turbulence reveals that energy spectra in the intermediate dissipation range universally follow a stretched-exponential form with a stretching exponent of approximately 0.5, independent of the Reynolds number.
This paper presents an obstacle-aware adversarial Q-learning strategy that enables smart microswimmers to successfully navigate turbulent flows with obstacles by suppressing trapping at stagnation points, thereby outperforming both naive swimmers and surfers.
This paper demonstrates that recently developed high-order dual-pairing summation-by-parts methods, which utilize an entropy-stable volume upwind filter, achieve both provable entropy stability and crucial local energy stability for nonlinear conservation laws, thereby preventing high-frequency mode dominance and enabling accurate simulations of turbulent flows.