Aggravated ozone pollution in the strong free convection boundary layer

2021 ◽  
pp. 147740
Author(s):  
Guiqian Tang ◽  
Yuting Liu ◽  
Xiao Huang ◽  
Yinghong Wang ◽  
Bo Hu ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Free Convection ◽  
Convection Boundary Layer ◽  
Ozone Pollution ◽  
Convection Boundary ◽  
Free Convection Boundary Layer

Boundary Layer Regime for Laminar Free Convection between Horizontal Circular Cylinders

1980 ◽  
Vol 102 (2) ◽  
pp. 228-235 ◽  
Author(s):  
M. C. Jischke ◽  
M. Farshchi
Keyword(s):  
Boundary Layer ◽  
Free Convection ◽  
Outer Cylinder ◽  
Temperature Fields ◽  
Circular Cylinders ◽  
Convection Boundary Layer ◽  
Integral Methods ◽  
Stagnant Region ◽  
Convection Boundary ◽  
Free Convection Boundary Layer

The steady, buoyancy-driven, laminar motion induced in the annulus of two horizontal, concentric, circular cylinders by a difference in the boundary temperatures is studied analytically in the large Rayleigh number limit. The flowfield is divided into five physically distinct regions: (1) an inner free convection boundary layer near the inner cylinder, (2) an outer free convection boundary layer near the outer cylinder, (3) a vertical plume above the inner cylinder, (4) a stagnant region below the inner cylinder, and (5) a core region surrounded by the other four regions. Zeroth-order solutions which account for the coupling of those five regions are obtained in the high Prandtl number limit using a boundary-layer approximation and integral methods. Comparisons of the calculated heat transfer and temperature fields with experiment and numerical finite-difference results are favorable.

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