Semi-preservation of momentum and heat transfer in cascade-wake-flows
Abstract
The paper presents the idea of semi-preservation in nonisothermal cascade-wake-flows. In contrast with the self-similarity concept, the evolution of semi-preserving flows is described in terms of characteristic velocity and temperature scales, separate for the mean and turbulent motion. Transport equations, of momentum and heat allow one to deduce the mutual correlations between individual scales and to derive a simple formula for turbulent Prandtl number, expressing Pr(T) in terms of mean-flow parameters only. Finally, the theoretical predictions are confronted with authors' own experimental data.
- Publication:
-
International Journal of Heat and Mass Transfer
- Pub Date:
- February 1986
- Bibcode:
- 1986IJHMT..29..293E
- Keywords:
-
- Cascade Flow;
- Heat Transfer;
- Momentum Transfer;
- Wakes;
- Diffusion Coefficient;
- Flow Velocity;
- Prandtl Number;
- Stress Distribution;
- Temperature Distribution;
- Fluid Mechanics and Heat Transfer