Results 11 to 20 of about 204,183 (308)

Analyze the Surface Thermodynamic and Dynamic Effects on the Atmospheric Boundary Layer Structure by Large Eddy Simulation

open access: yesGaoyuan qixiang, 2022
Atmospheric boundary layer structure affects the exchange of material and energy between the earth and air, the dispersion of pollutants and human health.The boundary layer structure is significantly affected by surface heating and dynamics, but it is ...
Min ZHANG   +3 more
doaj   +1 more source

Mechanism of development of turbulent boundary layer in a curved circular pipe under supersonic conditions

open access: yesAIP Advances, 2022
This study investigates the characteristics of a turbulent boundary layer in a curved circular pipe under an inflow of Ma = 3.0. The pipe consisted of a straight part and a curved part with a turning angle of 36° and a radius of curvature, γ = R/Rc, of γ
Chang-Hai Liang   +8 more
doaj   +1 more source

An experiment on the adiabatic compressible turbulent boundary layer in adverse and favourable pressure gradients [PDF]

open access: yes, 1972
A wind-tunnel model was developed to study the two-dimensional turbulent boundary layer in adverse and favourable pressure gradients with out the effects of streamwise surface curvature.
Gran, R. L., Kubota, T., Lewis, J. E.
core   +1 more source

A Note on the bottom shear stress in oscillatory planetary boundary layer flow [PDF]

open access: yesModeling, Identification and Control, 1988
A simple analytical theory is presented, which describes the motion in a turbulent oscillatory planetary boundary layer near a rough seabed using a two-layer, time-invariant eddy viscosity model.
Dag Myrhaug
doaj   +1 more source

Unsteady Motion of Shock Wave for a Supersonic Compression Ramp Flow Based on Large Eddy Simulation

open access: yesFrontiers in Energy Research, 2022
A large eddy simulation (LES) is conducted to investigate shock wave/turbulent boundary layer interaction in a 24° compression ramp at a high inlet Mach number of Ma=2.9.
Xing Huang   +3 more
doaj   +1 more source

Spatial DNS of an Isothermal Flat Plate Supersonic Turbulent Boundary Layer with/out Impinging Shock Wave

open access: yesJournal of Fluid Science and Technology, 2011
Spatial direct numerical simulation results are presented for transitional/turbulent supersonic isothermal flat plate boundary layers at M = 2.0 and impinging shock wave-boundary layer interactions.
Yusuke TOKURA, Hiroshi MAEKWA
doaj   +1 more source

Laminar-Turbulent Transition of an Inlet Boundary Layer in a Circular Pipe Induced by Periodic Injection (Shape of Isolated Turbulent Patches and Their Growth)

open access: yesJournal of Fluid Science and Technology, 2013
The laminar-turbulent transition of a boundary layer induced by a jet injection in the inlet region of a circular pipe was experimentally investigated.
Masashi ICHIMIYA   +3 more
doaj   +1 more source

Wind-driven mixing below the oceanic mixed layer [PDF]

open access: yes, 2011
This study describes the turbulent processes in the upper ocean boundary layer forced by a constant surface stress in the absence of the Coriolis force using large-eddy simulation.
Belcher, Stephen, Grant, Alan L. M.
core   +1 more source

Logarithmic mean temperature profiles and their connection to plume emissions in turbulent Rayleigh-B\'enard convection [PDF]

open access: yes, 2015
Two-dimensional simulations of Rayleigh-B\'enard convection at $Ra = 5\times10^{10}$ show that vertical logarithmic mean temperature profiles can be observed in regions of the boundary layer where thermal plumes are emitted.
Grossmann, Siegfried   +4 more
core   +2 more sources

The flow structure behind vortex generators embedded in a decelerating turbulent boundary layer [PDF]

open access: yes, 2009
The objective of the present work is to analyse the behaviour of a turbulent decelerating boundary layer under the effect of both passive and active jets vortex generators (VGs).
Braud, Caroline   +3 more
core   +4 more sources

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