Non-Oberbeck-Boussinesq effects in near-freezing water lower mean temperature, break mean-profile symmetry, shift critical Rayleigh number slightly, and preserve classical Nu and Re scalings after correction at intermediate Prandtl number.
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Spanwise surface temperature variations generate streaks that suppress up to 60% of second Mack mode energy in hypersonic boundary layers, with optimal wavelength 8-10 times the local boundary layer thickness at Mach 6.
Reinforcement learning finds energy-efficient paths across convective cells by learning to cross flow barriers and ride attracting structures, with performance improving as Rayleigh number rises.
Decoupling Stokes layer thickness and oscillation period via added body force in spanwise wall forcing yields one-third higher drag reduction and shifts net energy saving from -35% to +16%.
Perturbation theory gives a universal quadrupolar shape correction σ₂(κa) to electrophoretic mobility that is 1/5 in the Hückel limit and zero in the Smoluchowski limit.
Flexible autophoretic filaments achieve self-propulsion through buckling instability that breaks symmetry despite homogeneous surface chemistry.
A resolvent-based variational optimization method with divergence-free Galerkin projection computes invariant solutions in wall-bounded flows such as rotating plane Couette flow.
A machine learning model is trained to generate velocity fields that reproduce the observed trajectories of floating sensors, enabling flow estimation in 2D flows like cylinder wakes and ocean currents without governing equations or ground-truth data.
An inverse identification of eddy influence kernels from DNS moments yields a minimal hairpin vortex model that predicts mean velocity and streamwise variance across high Reynolds numbers.
Secondary shear instability develops early in Kelvin-Helmholtz braids at high Ri and Re, preceding primary billow saturation and controlling turbulent transition.
Roughness in compressible boundary layers breaks the classical Reynolds analogy, but a new fitting method for virtual origin and a slip-plane modified rGRA restore logarithmic behavior and temperature-velocity relations.
Extends the Hele-Shaw approximation via method of weighted residuals to a higher-order 2D model that captures non-parabolic velocity profiles and out-of-plane effects in thin-gap microfluidic geometries.
Generalized Taylor dispersion analysis shows that the time-averaged longitudinal dispersion of active Brownian particles in oscillatory Poiseuille flow varies non-monotonically with flow speed and activity and oscillates with frequency due to self-propulsion and advection coupling.
Gaussian vortices centered at topographic extrema, combined with linear background flow, form quasi-stationary solutions for 2D topographic turbulence whose stability depends on background energy level.
Transverse strain amplifies linear instability growth but reduces turbulent mixing-layer growth, with an adjusted buoyancy-drag model using a transverse-expansion-scaled drag length predicting the width.
Nonlinear relativistic EM waves in magnetized plasmas show modified dispersion relations where subluminal modes terminate at finite frequency when wave electric field exceeds guide field B0, preventing further propagation.
Surfactant-induced Marangoni stresses substantially modify spilling breaking wave dynamics including crest evolution and vorticity generation with limited impact on regular breakers.
A linear membrane model for axisymmetric deformations shows second-mode dominance, computes a pressure-frequency stability region independent of applied field strength, and finds that magnetic susceptibility and initial radius increase second-mode amplitude.
Vortex sheet simulations of heaving plates demonstrate quantized stable schooling modes that destabilize with increasing plate count or decreasing amplitude, stabilized by a relative-velocity control law.