Mixed thermal convection of power-law fluids past bodies with uniform fluid injection or suction

Journal Article · Thu Feb 01 04:00:00 EST 1990 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.2910337· OSTI ID:6018616

Wang, T Y; Kleinstreuer, C ^[1]

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1. North Carolina State Univ., Raleigh (United States)

Steady laminar flow of power-law fluids past heated two-dimensional or axisymmetric bodies is strongly influenced by the rate of fluid mass transfer at the wall, the buoyancy force, and the characteristics of the power-law fluid. The effects of these parameters on the local skin friction group and heat transfer group are analyzed for wedges of different angles, horizontal cylinders, and spheres. The local heat transfer group, HTG {approximately} Nu{sub x}, for wedge flows is greatly affected by the power-law viscosity index n, and by fluid withdrawal especially when the generalized Prandtl number is relatively high. Fluid suction at larger Prandtl numbers also generates high HTC values for cylinders and spheres. However, the local skin friction group, SFG {approximately} c{sub f}, for cylinders or spheres increases with fluid injection and decreases with suction largely because of buoyancy effects.

• DOE Contract Number: FG05-87ER13728
• OSTI ID: 6018616
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 112:1; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
AIRFOILS
BOUNDARY LAYERS
CALCULATION METHODS
CERAMICS
CONVECTION
COOLING
CYLINDERS
ENERGY TRANSFER
FLUID FLOW
FOOD PROCESSING
HEAT TRANSFER
INJECTION
INTAKE
LAMINAR FLOW
LAYERS
LUBRICATION
MASS TRANSFER
NATURAL CONVECTION
PROCESSING
SPHERES
STEADY FLOW
TURBINE BLADES