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.
Anisotropic SGS stress models produce more consistent mean separation bubble sizes in WMLES of smooth-body separation under grid refinement than eddy-viscosity models, mainly by capturing normal stress contributions on the windward side.
citing papers explorer
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Non-Oberbeck-Boussinesq effects in coldwater
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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Stabilisation of second Mack mode in hypersonic boundary layers through spanwise non-uniform surface temperature distribution
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.
-
Learning to traverse convective flows at moderate to high Rayleigh numbers
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.
-
On the optimal period of spanwise wall forcing for turbulent drag reduction
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%.
-
Shape-dependence of electrophoretic mobility
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.
-
Instability and self-propulsion of flexible autophoretic filaments
Flexible autophoretic filaments achieve self-propulsion through buckling instability that breaks symmetry despite homogeneous surface chemistry.
-
Searching for Invariant Solutions to Wall-Bounded Flows using Resolvent-Based Optimisation
A resolvent-based variational optimization method with divergence-free Galerkin projection computes invariant solutions in wall-bounded flows such as rotating plane Couette flow.
-
Machine-learning based flow field estimation using floating sensor locations
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.
-
The Minimal Attached Eddy in Wall Turbulence: Statistical Foundations, Inverse Identification and Influence Kernels
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.
-
Early onset of secondary shear instability in Kelvin-Helmholtz braids at high Reynolds number
Secondary shear instability develops early in Kelvin-Helmholtz braids at high Ri and Re, preceding primary billow saturation and controlling turbulent transition.
-
Compressible turbulent boundary layers over two-dimensional square-rib roughness
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.
-
Thin gap approximations for microfluidic device design
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.
-
Dispersion of active particles in oscillatory Poiseuille flow
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.
-
Final states of two-dimensional turbulence above large-scale topography: stationary vortex solutions and barotropic stability
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.
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Impact of transverse strain on linear, transitional and self-similar turbulent mixing layers
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.
-
Relativistically-strong electromagnetic waves in magnetized plasmas
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-laden breaking wave: regular and spilling regimes
Surfactant-induced Marangoni stresses substantially modify spilling breaking wave dynamics including crest evolution and vorticity generation with limited impact on regular breakers.
-
Nonspherical oscillations of an encapsulated magnetic microbubble
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.
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On the stability of an in-line formation of hydrodynamically interacting flapping plates
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.
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Effect of subgrid-scale anisotropy on wall-modeled large-eddy simulation of turbulent flow with smooth-body separation
Anisotropic SGS stress models produce more consistent mean separation bubble sizes in WMLES of smooth-body separation under grid refinement than eddy-viscosity models, mainly by capturing normal stress contributions on the windward side.