A comment on the "linear" law of the wall for fully developed turbulent channel flow

1998 ◽  
Vol 25 (2) ◽  
pp. 165-170 ◽  
Author(s):  
A. Cenedese ◽  
G. P. Romano ◽  
R. A. Antonia
Keyword(s):  
Channel Flow ◽  
Turbulent Channel Flow ◽  
Law Of The Wall

scholarly journals Law of the wall in an unstably stratified turbulent channel flow

2015 ◽  
Vol 781 ◽  
Author(s):  
A. Scagliarini ◽  
H. Einarsson ◽  
Á. Gylfason ◽  
F. Toschi
Keyword(s):  
Boundary Layer ◽  
Channel Flow ◽  
Mean Field ◽  
Turbulent Channel Flow ◽  
Direct Numerical Simulations ◽  
Reynolds Stresses ◽  
Law Of The Wall ◽  
Log Law ◽  
Logarithmic Law ◽  
Boundary Layer Dynamics

We perform direct numerical simulations of an unstably stratified turbulent channel flow to address the effects of buoyancy on the boundary layer dynamics and mean field quantities. We systematically span a range of parameters in the space of friction Reynolds number ($\mathit{Re}_{{\it\tau}}$) and Rayleigh number ($\mathit{Ra}$). Our focus is on deviations from the logarithmic law of the wall due to buoyant motion. The effects of convection in the relevant ranges are discussed, providing measurements of mean profiles of velocity, temperature and Reynolds stresses as well as of the friction coefficient. A phenomenological model is proposed and shown to capture the observed deviations of the velocity profile in the log-law region from the non-convective case.

Law of the Wall in Turbulent Channel Flow

1963 ◽  
Vol 6 (1) ◽  
pp. 144 ◽  
Author(s):  
C. L. Tien ◽  
D. T. Wasan
Keyword(s):  
Channel Flow ◽  
Turbulent Channel Flow ◽  
Law Of The Wall
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