Structure of the Near-Wall Region in a Turbulent Flow,
Abstract
This paper analyzes the wall region of a turbulent flow on the basis of the models as proposed by Kolmogorov and Saffman by including the effect of molecular viscosity in the transport equations. Neither Kolmogorov's nor Saffman's models could predict the experimental distribution of the Laufer's experimental data on turbulence energy when the experimental velocity distribution was used in the energy transport equation. In this paper a heuristic modification for the wall region is proposed which yields values of turbulence energy in agreement with the experimental data. Further, the proposed model asymptotically tends to Kolmogorov's model for the fully developed part of the flow. The analysis and results of this paper provide values of the eddy viscosity in the wall region which can be used in the solution of the equations of mean turbulence having terms depending on the molecular viscosity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1976
- Accession Number
- ADA034000
Entities
People
- B. B. Amlicke
- Z. U. A. Warsi
Organizations
- Mississippi State University