HEAT TRANSFER CHARACTERISTICS OF LAMINAR BOUNDARY LAYERS IN THE PRESENCE OF VORTEX GENERATIONS

1990 ◽  
Author(s):  
Jurandir Itizo Yanagihara ◽  
Kahoru Torii
Keyword(s):  
Heat Transfer ◽  
Boundary Layers ◽  
Heat Transfer Characteristics ◽  
Laminar Boundary Layers ◽  
Transfer Characteristics

scholarly journals Unsteady Boundary Layers Over Rotating Blades

1975 ◽  
Author(s):  
R. S. R. Gorla
Keyword(s):  
Heat Transfer ◽  
Boundary Layers ◽  
Skin Friction Coefficient ◽  
Universal Functions ◽  
Heat Transfer Characteristics ◽  
Rotating Blades ◽  
Transfer Characteristics ◽  
Flow And Heat Transfer ◽  
Temperature Boundary ◽  
Dimensional Boundary

Rotating blades provide some of the most challenging problems of fluid mechanics. The presence of secondary effects in the boundary layers over rotating blades results in the flow and heat transfer characteristics that are different from the classical two-dimensional boundary layer theory. In this paper, the unsteady velocity and thermal boundary layers have been solved for constant temperature boundary condition. By the use of small crossflow approximation, a perturbation analysis is developed to predict heat transfer characteristics. Numerical results for the universal functions proportional to primary flow and crossflow are presented. For the thermal problem, universal functions are presented for Pr = 0.70 and 1.0. Expressions for the skin friction coefficient as well as the Nusselt number have been derived.

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