Prediction of heat transfer in turbulent, transpired boundary layers using simple power law velocity and temperature profiles
Considered here is steady, constant property, two-dimensional planar, turbulent boundary layer flow with injection or suction and pressure gradient along the surface. The velocity and thermal inner laws for transpired turbulent boundary layers are represented by simple power law forms which are then used as the approximate profiles needed to solve the integral form of the x momentum equation and the thermal energy equation. This gives two nonlinear ordinary differential equations which are solved numerically to yield the hydrodynamic and thermal boundary layer thicknesses. Using these in the skin friction and heat transfer laws leads to the variation of Stanton number with position, x, along the surface. Predicted Stanton numbers are compared with experimental data for a number of different cases. These include both blowing and suction with constant blowing fractions, F, in zero and non-zero pressure gradients. Also presented are comparisons to experimental data of predictions for more complicated situations in which the blowing fraction, F, varies with position, x, in a prescribed manner.
- Research Organization:
- Univ. of Maine, Orono, ME (US)
- OSTI ID:
- 20014364
- Resource Relation:
- Conference: 32nd National Heat Transfer Conference, Baltimore, MD (US), 08/08/1997--08/12/1997; Other Information: PBD: 1997; Related Information: In: ASME proceedings of the 32nd national heat transfer conference (HTD-Vol. 346). Volume 8: Fundamentals of convection; Turbulent heat transfer; Mixed convection heat transfer, by Oosthuizen, P.H.; Chen, T.S.; Acharya, S.; Armaly, B.F.; Pepper, D.W. [eds.], 201 pages.
- Country of Publication:
- United States
- Language:
- English
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