Velocity and Temperature Profiles in the Turbulent Boundary Layer Above an Evaporating Liquid Film

1969 ◽  
Vol 91 (1) ◽  
pp. 186-187
Author(s):  
C. F. Warner ◽  
D. L. Crabtree
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Liquid Film ◽  
Temperature Profiles

Turbulent Boundary Layer Subjected to a Sudden Change in Surface Roughness and Temperature

1999 ◽  
Author(s):  
João Henrique D. Guimarães ◽  
Sergio J. F. dos Santos ◽  
Jian Su ◽  
Atila P. Silva Freire
Keyword(s):  
Boundary Layer ◽  
Surface Roughness ◽  
Turbulent Boundary Layer ◽  
Skin Friction ◽  
Sudden Change ◽  
Stanton Number ◽  
Temperature Profiles ◽  
Internal Layers ◽  
Mean Velocity ◽  
Wall Boundary Conditions

Abstract In present work, the dynamic and thermal behaviour of flows that develop over surfaces that simultaneously present a sudden change in surface roughness and temperature are discussed. In particular, the work is concerned with the physical validation of a newly proposed formulation for the near wall temperature profile. The theory uses the concept of the displacement in origin, together with some asymptotic arguments, to propose a new expression for the logarithmic region of the turbulent boundary layer. The new expressions are, therefore, of universal applicability, being independent of the type of rough surface considered. The present formulation may be used to give wall boundary conditions for two-equation differential models. The theoretical results are validated with experimental data obtained for flows that develop over flat surfaces with sudden changes in surface roughness and in temperature conditions. Measurements of mean velocity and of mean temperature are presented. A reduction of the data provides an estimate of the skin-friction coefficient, the Stanton number, the displacement in origin for both the velocity and the temperature profiles, and the thickness of the internal layers for the velocity and temperature profiles. The skin-friction co-efficient was calculated based on the chart method of Perry and Joubert (J.F.M., 17, 193–211, 1963) and on a balance of the integral momentum equation. The same chart method was used for the evaluation of the Stanton number and the displacement in origin.

Mean velocity and temperature profiles in a sheared diabatic turbulent boundary layer

2012 ◽  
Vol 24 (10) ◽  
pp. 105105 ◽  
Author(s):  
Dan Li ◽  
Gabriel G. Katul ◽  
Elie Bou-Zeid
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Temperature Profiles ◽  
Mean Velocity

Velocity and Temperature Profiles in Turbulent Boundary Layers With Tangential Injection

1962 ◽  
Vol 84 (1) ◽  
pp. 45-54 ◽  
Author(s):  
R. A. Seban ◽  
L. H. Back
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Thermal Behavior ◽  
Boundary Layers ◽  
Film Cooling ◽  
Mass Velocity ◽  
Free Stream ◽  
Turbulent Boundary Layers ◽  
Temperature Profiles ◽  
Adiabatic Wall

Velocity and temperature profiles are presented for the turbulent boundary layer downstream of a tangential injection slot for the further clarification of the film-cooling problem. The profiles refer primarily to an injection mass velocity of 0.36 times that of the free stream; these and other auxiliary results demonstrate a complex hydrodynamic and relatively simple thermal behavior in which the temperature profiles appear to be similar in all cases. By using this correspondence together with the approximation of a fully developed hydrodynamic layer in most of the downstream region, it is possible to rationalize the adiabatic wall temperatures that have been presented previously.

Conical Turbulent Boundary Layer Experiments and a Correlation With Flat Plate Data

1960 ◽  
Vol 82 (2) ◽  
pp. 94-100 ◽  
Author(s):  
W. S. Bradfield
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Boundary Layer ◽  
Heat Flux ◽  
Turbulent Boundary Layer ◽  
Local Heat ◽  
Temperature Profiles ◽  
Turbulent Friction ◽  
Total Temperature ◽  
Local Heat Flux

Measurements in the turbulent boundary layer of unyawed cones for Mach numbers from 1 to 6 are presented. Specifically, the first measurements of total temperature profiles, directly determined skin friction, and local heat flux in the turbulent boundary layer of cone models are given. In addition, these experimental data are shown to justify the calculation of turbulent friction and heat transfer on unyawed cones by means of an incompressible plate friction law and simple auxiliary relations.

scholarly journals DNS and modeling of the turbulent boundary layer over an evaporating liquid film

2009 ◽  
Vol 52 (25-26) ◽  
pp. 6028-6041 ◽  
Author(s):  
Gaëtan Desoutter ◽  
Chawki Habchi ◽  
Bénédicte Cuenot ◽  
Thierry Poinsot
Keyword(s):  
Boundary Layer ◽  
Turbulent Boundary Layer ◽  
Liquid Film
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