turbulence and boundary layer
Influence of grid aspect ratio on planetary boundary layer turbulence in large-eddy simulations
... on turbulence in the planetary boundary layer (PBL) in a large-eddy simulation ...sub-grid-scale turbulence plays an essential role in reproduc- ing the theoretical − 5/3 slope of the energy ...
27
The Turbulence Structure of the Stable Atmospheric Boundary Layer Around a Coastal Headland: Aircraft Observations and Modelling Results
... the boundary formulation for the modelled turbulence relying on steady-state ...internal boundary layer, and the too rapid cooling of the modelled BL over the cold pool downstream of the cape ...
38
Measurements of high-frequency Atmospheric Turbulence and its Impact on the Boundary Layer of Wind Turbine Blades
... small-scale turbulence below Taylor’s length-scale of less than 50 mm strongly shows non-Gaussian ...integral turbulence intensity of more that 10 %, the energy content suitable for receptivity of TS-waves ...
11
Spatial distribution and scaling of bursting events in boundary layer turbulence over smooth and rough surfaces
... f turbulence intensity, leading to the recording o f much larger values in the atmospheric boundary layer than in laboratory scale tests (Townsend ...loose boundary sediment by either water or ...
251
Diagnostic of the diurnal cycle of turbulence of the Equatorial Atlantic Ocean upper boundary layer
... mixed layer is more highly developed using the General Ocean Turbulence Model ...direct turbulence observations and modeling studies of the equatorial Atlantic Ocean, the results are compared ...
12
Measurements of wind turbulence parameters by a conically scanning coherent Doppler lidar in the atmospheric boundary layer
... wind turbulence in the atmospheric boundary layer are ...of turbulence, turbulent energy dissipation rate, integral scale of turbulence, and momentum ...of turbulence from lidar ...
18
Aeroelectric structures and turbulence in the atmospheric boundary layer
... Abstract. Complex electrical measurements with the use of sodar data show that electric field pulsation analysis is use- ful for electrodynamics/turbulence monitoring under differ- ent conditions. In particular, ...
6
An improved k –ω turbulence model for the simulations of the wind turbine wakes in a neutral atmospheric boundary layer flow
... Bouras, I., Ma, L., Ingham, D. et al. (1 more author) (2018) An improved k –ω turbulence model for the simulations of the wind turbine wakes in a neutral atmospheric boundary layer flow. Journal of ...
31
Relationship analysis of PM2.5 and boundary layer height using an aerosol and turbulence detection lidar
... In recent decades, lidar are widely used in the lower at- mosphere via Mie scattering, Raman scattering and differ- ential absorption (Campbell et al., 2002; Godin et al., 1989; Murray and van der Laan, 1978; Reitebuch, ...
13
Cluster observation of magnetohydrodynamic turbulence in the plasma sheet boundary layer
... MHD turbulence and is moti- vated by the recent observational confirmation about the existence of sideband waves adjacent to the linear- mode branch in solar wind turbulence (Perschke et ...into ...
9
Effect of the wind speed Turbulence on the total wind speed in the surface boundary layer in Baghdad city
... Abstract- In this work the total wind speed has been estimated by using a fast response anemometer , so we calculate the turbulence in the wind speed components (u,v,w) ,horizontal momentum flux, and turbulent ...
8
Turbulence and macro turbulence in the bottom boundary layer downstream of large scale bedforms; implications for sediment transport
... Most available relationships between sediment transport rate and bed shear stress, in uniform flows, involve spatially-averaged parameters. These procedures are accurate over a flat bed, but lead to errors over bedforms, ...
152
Boundary Layer Interaction in Hypersonic Air Intake
... Sarah Frauholz, Birgit U. Reinartz, Siegfried Muller and Marek Behr et al A brief understanding is given on how the transition modeling for hypersonic intake is analyzed using three-dimensional high-resolution ...
5
Studies on the Evaporation Regulation Mechanisms of Crude Oil and Petroleum Products
... immediate layer of air above the evaporation surface is known as the air boundary layer ...This boundary layer is the intermediate inter- face between the air and the liquid and might ...
11
Wave-turbulence scaling in the ocean mixed layer
... oceanic boundary layer, the depth dependence of was found to be largely consistent with that expected for a shear-driven wall ...mixed layer depth. Integrating in the mixed layer yielded ...
12
Euromart study report. Executive summary
... 25 COMMERCIAL- IN- CONFIDENCE Structures Aerodynamics e e e e e • theoretical methods e natural laminar flow e hybrid laminar flow e turbulence management • shock/boundary layer interact[r] ...
82
Atmospheric structures in the troposphere as revealed by high-resolution backscatter images from MU radar operating in range-imaging mode
... cloud-base turbulence (MCT) layers generated by convective instability in a moist troposphere, convective boundary layer (CBL), and sheet and layer (S&L) structures in a stably stratified ...
7
Wall Roughness Effects On Shock Boundary Layer Interaction Flows
... different turbulence model in predicting the surface roughness effect on shock boundary layer interaction flow field was ...same boundary conditions but with different turbulence ...
8
Hampering Görtler vortices via optimal control in the framework of nonlinear boundary region equations
... counteracting the G¨ ortler vortices. The kinetic energy associated with the vortices was shown to decrease by almost three orders of magnitude from the original amplitude in some cases, with a commensurate reduction in ...
36
On the interaction between turbulence grids and boundary layers
... the boundary layer due to the alternate wake and jet pattern, is emerging from the ...that, turbulence intensities get damped and length-scales get larger further ...
7