scholarly journals A Turbulence Velocity Scale for Predicting the Fate of Buoyant Materials in the Oceanic Mixed Layer

2018 ◽  
Vol 45 (21) ◽  
pp. 11,817-11,826 ◽  
Author(s):  
Tomas Chor ◽  
Di Yang ◽  
Charles Meneveau ◽  
Marcelo Chamecki
Keyword(s):  
Mixed Layer ◽  
Oceanic Mixed Layer ◽  
Velocity Scale ◽  
Turbulence Velocity

On leakage of energy from turbulence to internal waves in the oceanic mixed layer

2007 ◽  
Vol 57 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Lakshmi H. Kantha ◽  
Carol Anne Clayson
Keyword(s):  
Internal Waves ◽  
Mixed Layer ◽  
Oceanic Mixed Layer

scholarly journals A Generalized Depth-Integrated Model of the Oceanic Mixed Layer

1999 ◽  
Vol 29 (4) ◽  
pp. 791-806 ◽  
Author(s):  
P. Ravindran ◽  
Daniel G. Wright ◽  
Trevor Platt ◽  
Shubha Sathyendranath
Keyword(s):  
Mixed Layer ◽  
Integrated Model ◽  
Oceanic Mixed Layer

A turbulence velocity scale for curved shear flows

1975 ◽  
Vol 70 (1) ◽  
pp. 37-57 ◽  
Author(s):  
Ronald M. C. So
Keyword(s):  
Reynolds Stress ◽  
Shear Flows ◽  
Turbulent Energy ◽  
Streamline Curvature ◽  
Velocity Scale ◽  
Dimensional Boundary ◽  
Free Constant ◽  
Turbulence Velocity ◽  
Turbulence Length ◽  
Energy Balances

Assuming the turbulence length scale to be unaffected by streamline curvature, a turbulence velocity scale for curved shear flows is derived from the Reynolds-stress equations. Closure of the equations is obtained by using the scheme of Mellor & Herring (1973), and the Reynolds-stress equations are simplified by invoking the two-dimensional boundary-layer approximations and assuming that production of turbulent energy balances viscous dissipation. The resulting formula for the velocity scale has one free parameter, but this can be determined from data for non-rotating unstratified plane flows. Consequently there is no free constant in the derived expression. A single value of the constant is found to give good agreement between calculated and measured values of the velocity scale for a wide variety of curved shear flows.The result is also applied to test the validity and extent of the analogy between the effects of buoyancy and streamline curvature. This is done by comparing the present result with that obtained by Mellor (1973). Excellent agreement is obtained for the range −0·21 [les ]Rif[les ] 0·21. Therefore the present result provides direct evidence in support of the use of a Monin–Oboukhov (1954) formula for curved shear flows as proposed by Bradshaw (1969).

Sign in / Sign up

Export Citation Format

Share Document