This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Role of the Turbulent Prandtl Number in Turbine Blade Heat Transfer Prediction
Annotation ability available
Sector:
Language:
English
Abstract
A study was undertaken to improve the prediction of external (gas-to-blade) heat transfer coefficients in gas turbine engines. The study specifically investigated the effects of improved modeling of the eddy diffusivity of heat in the turbulence model. A two- dimensional boundary layer code, STAN5, was selected and modified by incorporating several different turbulent Prandtl number models. Results indicated that slight effects were attributable to the modified turbulence model. Boundary layer character (laminar, turbulent or transitioning) appeared to be much more significant.
Recommended Content
Journal Article | Improved RANS Computations of Flow over the 25°-Slant-Angle Ahmed Body |
Technical Paper | Heat Transfer and Pressure Drop Characteristics of a Dimpled Flat Tube |
Technical Paper | The Effect of Free Stream Turbulence on A-pillar Airflow |
Authors
Citation
Whitaker, K., "The Role of the Turbulent Prandtl Number in Turbine Blade Heat Transfer Prediction," SAE Technical Paper 901810, 1990, https://doi.org/10.4271/901810.Also In
References
- Crawford, M.E. Kays, W.M. “STAN5 - A Program for Numerical Computation of Two-Dimensional Internal and External Boundary Layer Flow” NASA CR-2742 1976
- Gaugler, R.E. “Some Modifications to, and Operational Experiences with, the Two-Dimensional, Finite Difference, Boundary Layer Code STAN5” ASME Paper No. 81-GT-89 1984
- Patankar, S.V. Spalding, D.B. “A Finite-Difference Procedure for Solving the Equations of the Two Dimensional Boundary Layer” International Journal of Heat and Mass Transfer 10 1967 1389
- Hylton, L.D. Mihelc, M.S. Turner, E.R. Nealy, D.A. York, R.E. “Analytical and Experimental Evaluation of the Heat Transfer Distribution Over the Surfaces of Turbine Vanes” NASA CR-168015 1983
- Jenkins, R. “Variation of the Eddy Conductivity with Prandtl Modulus and its Use in the Prediction of Turbulent Heat Transfer Coefficients” Proceedings of the Heat Transfer and Fluid Mechanics Institute 1951 147
- Thomas, L.C. “Temperature Profiles for Liquid Metals and Moderate Prandtl Number Fluids” Journal of Heat Transfer 92 1970 565
- Cebeci, T. “A Model for Eddy Conductivity and Turbulent Prandtl Number” Journal of Heat Transfer 95 1973 227
- Tyldesley, J.R. Silver, R.S. “The Prediction of the Transport Properties of a Turbulent Fluid” International Journal of Heat and Mass Transfer 11 1968 1325