Similarity in the Marine Atmospheric Surface Layer: The Role of Intermittency and Boundary-Layer Structures

1997 ◽  
Author(s):  
C. W. Fairall ◽  
R. J. Hill
Keyword(s):  
Boundary Layer ◽  
Surface Layer ◽  
Atmospheric Surface Layer ◽  
Layer Structures

Fluxes and Gradients in the Convective Surface Layer and the Possible Role of Boundary-Layer Depth and Entrainment Flux

2005 ◽  
Vol 116 (2) ◽  
pp. 237-252 ◽  
Author(s):  
G. J. Steeneveld ◽  
A. A. M. Holtslag ◽  
H. A. R. Debruin
Keyword(s):  
Boundary Layer ◽  
Surface Layer ◽  
Layer Depth

scholarly journals Wind and turbulence profiles in a simulated wind tunnel boundary layer

MAUSAM ◽  
2021 ◽  
Vol 43 (3) ◽  
pp. 283-290
Author(s):  
S. SIVARAMAKRISHNAN
Keyword(s):  
Boundary Layer ◽  
Surface Layer ◽  
Wind Tunnel ◽  
Turbulent Boundary Layer ◽  
Atmospheric Surface Layer ◽  
Length Scale ◽  
Laboratory Modeling ◽  
Tunnel Floor ◽  
Short Test ◽  
Simulated Wind

A system of Honeycomb Flat Plate (HFP) grid and cylindrical rods has been developed to accelerate the growth of a thick (32 cm) turbulent boundary layer, artificially, over rough floor of a low speed short test-section (0.61 m x 0.61 m) wind tunnel. Simulated profiles of wind velocity, longitudinal turbulence intensity and Reynolds stress are shown to have similarity to those of a neutral atmospheric boundary layer over a typical rural terrain. Longitudinal spectrum of turbulence measured at 10,30 and 100 mm above tunnel floor is shown to compare well with atmospheric spectrum and agree closely with the Kolmogoroff's -2/3 law in the inertial sub-range of the spectrum. Based on the length scale of longitudinal turbulence estimated from the spectrum, a scale of 1 :900 has been proposed for laboratory modeling of environmental problems wherein the transport of mass in a neutral atmospheric surface layer IS solely due to eddies of mechanical origin.

Ground effects on pressure fluctuations in the atmospheric boundary layer

1978 ◽  
Vol 86 (3) ◽  
pp. 491-511 ◽  
Author(s):  
M. M. Gibson ◽  
B. E. Launder
Keyword(s):  
Boundary Layer ◽  
Heat Flux ◽  
Surface Layer ◽  
Atmospheric Surface Layer ◽  
Pressure Field ◽  
Pressure Fluctuations ◽  
Gravitational Effects ◽  
Fluctuating Pressure ◽  
Stratified Shear Flow ◽  
Ground Effects

Proposals are made for modelling the pressure-containing correlations which appear in the transport equations for Reynolds stress and heat flux in a simple way which accounts for gravitational effects and the modification of the fluctuating pressure field by the presence of a wall. The predicted changes in structure are shown to agree with Young's (1975) measurements in a free stratified shear flow and with the Kansas data on the atmospheric surface layer.

scholarly journals Role of large eddies in the breakdown of the Reynolds analogy in an idealized mildly unstable atmospheric surface layer

2017 ◽  
Vol 143 (706) ◽  
pp. 2182-2197 ◽  
Author(s):  
Kaighin A. McColl ◽  
Chiel C. van Heerwaarden ◽  
Gabriel G. Katul ◽  
Pierre Gentine ◽  
Dara Entekhabi
Keyword(s):  
Surface Layer ◽  
Atmospheric Surface Layer ◽  
Reynolds Analogy ◽  
Large Eddies
Sign in / Sign up

Export Citation Format

Share Document