Lidar measurements of the turbulence energy dissipation rate in the boundary layer of atmosphere in presence of low level jet streams and atmospheric internal waves

2017 ◽  
Author(s):  
Viktor A. Banakh ◽  
Igor Smalikho ◽  
Andrey Falits
Keyword(s):  
Boundary Layer ◽  
Energy Dissipation ◽  
Internal Waves ◽  
Dissipation Rate ◽  
Energy Dissipation Rate ◽  
Turbulence Energy ◽  
Jet Streams ◽  
Lidar Measurements ◽  
Turbulence Energy Dissipation ◽  
Low Level Jet

Sensitizing the Dissipation Equation to Irrotational Strains

1980 ◽  
Vol 102 (1) ◽  
pp. 34-40 ◽  
Author(s):  
K. Hanjalic´ ◽  
B. E. Launder
Keyword(s):  
Energy Transfer ◽  
Energy Dissipation ◽  
Boundary Layers ◽  
Dissipation Rate ◽  
Energy Dissipation Rate ◽  
Turbulent Boundary Layers ◽  
Turbulence Energy ◽  
Turbulence Energy Dissipation ◽  
Dissipation Equation

The paper recommends the addition of an extra term to the conventional approximate transport equation for the turbulence energy dissipation rate. The term may be interpreted as emphasizing the role of irrotational deformations in promoting energy transfer across the spectrum or, equivalently, of augmenting the influence of normal strains. Calculations, including the new term, are reported for the plane and round jet, and for several turbulent boundary layers. In the cases considered the addition of the new term significantly improves agreement with experiment.

scholarly journals Lidar study of wind turbulence, low level jet streams, and atmospheric internal waves in the boundary layer of atmosphere

2018 ◽  
Vol 176 ◽  
pp. 06005
Author(s):  
Viktor Banakh ◽  
Igor Smalikho
Keyword(s):  
Boundary Layer ◽  
Internal Waves ◽  
Stable Boundary Layer ◽  
Dissipation Rate ◽  
Jet Streams ◽  
Stable Boundary ◽  
Low Level ◽  
Experimental Campaign ◽  
Wind Turbulence ◽  
Low Level Jet

The results of lidar study of wind turbulence, low level jet streams, and internal atmospheric waves in the stable boundary layer of atmosphere on the coast of Lake Baikal are presented. Few events of the atmospheric internal waves (AIWs) were registered during the experimental campaign. All the registered AIWs were observed in the presence of low level jet streams. Two dimensional time–height patterns of the wind turbulence dissipation rate during AIW events were obtained as well.

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