Results 1 to 10 of about 6,770,878 (333)
Active boundary layers in confined active nematics [PDF]
Nature Communications, 2022 The boundary of conventional liquid crystals is known to anchor the orientational field of the passive materials under equilibrium conditions. Here, the authors show an active nematic to develop active boundary layers that topologically polarize the ...
Jerôme Hardoüin +5 more
doaj +2 more sources
Turbulent dispersion in cloud-topped boundary layers [PDF]
Atmospheric Chemistry and Physics, 2009 Compared to dry boundary layers, dispersion in cloud-topped boundary layers has received less attention. In this LES based numerical study we investigate the dispersion of a passive tracer in the form of Lagrangian particles for four kinds of atmospheric
R. A. Verzijlbergh +3 more
doaj +6 more sources
Stable Boundary Layers and Subfilter-Scale Motions
Atmosphere, 2023 Recent high-resolution large-eddy simulations (LES) of a stable atmospheric boundary layer (SBL) with mesh sizes N=(5123,10243,20483) or mesh spacings ▵=(0.78,0.39,0.2) m are analyzed.
James C. McWilliams +3 more
doaj +1 more source
Orthogonal series approximation for boundary layers [PDF]
Theoretical and Applied Mechanics, 2004 In this paper we shall consider a class of singularly perturbed problems described by the ordinary differential equation of second order with small parameter multiplying the highest derivative and the appropriate boundary conditions, which describes ...
Adžić Nevenka, Ovcin Z.
doaj +1 more source
Superfluid Boundary Layer [PDF]
Physical Review Letters, 2017 We model the superfluid flow of liquid helium over the rough surface of a wire (used to experimentally generate turbulence) profiled by atomic force microscopy. Numerical simulations of the Gross-Pitaevskii equation reveal that the sharpest features in the surface induce vortex nucleation both intrinsically (due to the raised local fluid velocity) and ...
Stagg GW, Parker NG, Barenghi CF
openaire +4 more sources
On the computation of planetary boundary-layer height using the bulk Richardson number method [PDF]
Geoscientific Model Development, 2014 Experimental data from four field campaigns are used to explore the variability of the bulk Richardson number of the entire planetary boundary layer (PBL), Ribc, which is a key parameter for calculating the PBL height (PBLH) in numerical weather and ...
Y. Zhang +6 more
doaj +1 more source
Experimental Flow Field Investigation of the Bio-Inspired Corrugated Wing for MAV Applications [PDF]
INCAS Bulletin, 2021 This is an experimental flow field study of a bio-inspired corrugated finite wing from the dragonfly intended to assess the flow behavior over the wing and compare it with a wing of the same geometry with filled corrugation, at low Reynolds numbers 46000
Y. D. DWIVEDI +3 more
doaj +1 more source
On Long-Range Characteristic Length Scales of Shell Structures
Eng, 2023 Shell structures have a rich family of boundary layers including internal layers. Each layer has its own characteristic length scale, which depends on the thickness of the shell.
Harri Hakula
doaj +1 more source
Lubricants, 2023 Although aluminum alloys are widely used in the automotive and aerospace industries due to their excellent strength-to-weight ratio and good corrosion resistance, the poor tribological performance and low compatibility of these materials with lubricant ...
Hong Guo +3 more
doaj +1 more source
Effects of Internal Boundary Layers and Sensitivity on Frequency Response of Shells of Revolution
Vibration, 2023 New applications introduced capsule designs with features that have not been fully analysed in the literature. In this study, thin shells of revolution are used to model drug delivery capsules both with closed and open designs including perforations. The
Harri Hakula
doaj +1 more source