Role of turbulent dissipation and thermal convection in solar wind's temperature evolution

1996 ◽  
Vol 101 (A12) ◽  
pp. 27549-27554 ◽  
Author(s):  
Mahendra K. Verma
Keyword(s):  
Thermal Convection ◽  
Temperature Evolution ◽  
Turbulent Dissipation

THE ROLE OF THERMAL CONVECTION IN RESUPPLYING O2 TO STRIP COAL-MINE SPOIL

Soil Science ◽  
1994 ◽  
Vol 158 (1) ◽  
pp. 47-55 ◽  
Author(s):  
WEIXING GUO ◽  
RICHARD R. PARIZEK ◽  
ARTHUR W. ROSE
Keyword(s):  
Coal Mine ◽  
Thermal Convection ◽  
Mine Spoil

scholarly journals Role of critical points of the skin friction field in formation of plumes in thermal convection

2015 ◽  
Vol 92 (4) ◽  
Author(s):  
Vinodh Bandaru ◽  
Anastasiya Kolchinskaya ◽  
Kathrin Padberg-Gehle ◽  
Jörg Schumacher
Keyword(s):  
Skin Friction ◽  
Critical Points ◽  
Thermal Convection

scholarly journals Analysis of mean and fluctuating helicity measured by TomoPIV in swirling jet

2018 ◽  
Vol 180 ◽  
pp. 02097
Author(s):  
Rodion Stepanov ◽  
Peter Frick ◽  
Vladimir Dulin ◽  
Dmitriy Markovich
Keyword(s):  
Large Scale ◽  
Swirling Flow ◽  
Spatial Separation ◽  
Turbulent Dissipation ◽  
Helical Turbulence ◽  
Turbulent Closure ◽  
The Mean ◽  
Grid Points ◽  
Atmospheric Vortices

Important role of helicity was theoretically predicted for the generation of large-scale magnetic fields and atmospheric vortices. Helicity can lead to a reduction of turbulent dissipation in the atmosphere or in a specific constrained flow, e.g. in pipe. We use the TomoPIV data (42 cube of grid points, resolution 0.84 mm) to measure 3D velocity field of turbulent swirling flows. We study spatial distribution of the mean and fluctuating components of energy and helicity. We find that helical turbulence excitation and decay along stream of the jet strongly depend on the inflow swirl. We observe spatial separation of turbulent flow with different sign of helicity while integrated values are conserves. It is shown that large scale swirling flow induces helicity at the small scales. Our results bring valuable materials for benchmark the modern numerical simulations with turbulent closure technique.

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