A Calculation Method for the Incompressible Turbulent Boundary Layer, Including the Effect of Upstream History on the Turbulent Shear Stress
Title | A Calculation Method for the Incompressible Turbulent Boundary Layer, Including the Effect of Upstream History on the Turbulent Shear Stress PDF eBook |
Author | J. F. Nash |
Publisher | |
Pages | 72 |
Release | 1966 |
Genre | |
ISBN |
NASA Technical Note
Title | NASA Technical Note PDF eBook |
Author | |
Publisher | |
Pages | 492 |
Release | 1970 |
Genre | |
ISBN |
Some Turbulent Boundary-layer Measurements Obtained from the Forebody of an Airplane at Mach Numbers Up to 1.72
Title | Some Turbulent Boundary-layer Measurements Obtained from the Forebody of an Airplane at Mach Numbers Up to 1.72 PDF eBook |
Author | Edwin J. Saltzman |
Publisher | |
Pages | 52 |
Release | 1970 |
Genre | Skin friction (Aerodynamics) |
ISBN |
Upstream History and Apparent Stress in Turbulent Boundary Layers
Title | Upstream History and Apparent Stress in Turbulent Boundary Layers PDF eBook |
Author | Perry Goldberg |
Publisher | |
Pages | 112 |
Release | 1966 |
Genre | Boundary layer |
ISBN |
A comprehensive experimental and analytical study specifically designed to investigate upstream history and apparent stresses in incompressible, two-dimensional, turbulent boundary layers has been conducted. Hot-wire measurements of turbulent shear stress and longitudinal turbulence intensity, as well as velocity profiles and wall shear stress measurements, were made for six different pressure distributions. It was found that the turbulent shear stress is dependent upon the upstream history of the flow and not a unique function of the local velocity profile. A simple equation for the dissipation integral with a constant K was found to represent the data well. This expression was used with the mean-flow energy integral equation to obtain a practical method for predicting turbulent boundary layer behavior which accounts for upstream history. The predictions made with this method for the six pressure distributions of this study and for others extracted from the literature agreed well with the experimental data. (Author).
NASA Technical Paper
Title | NASA Technical Paper PDF eBook |
Author | |
Publisher | |
Pages | 70 |
Release | 1978 |
Genre | Science |
ISBN |
Evaluation of a Method for Computation of Separated, Turbulent, Compressible Boundary Layers
Title | Evaluation of a Method for Computation of Separated, Turbulent, Compressible Boundary Layers PDF eBook |
Author | M. C. Altstatt |
Publisher | |
Pages | 46 |
Release | 1976 |
Genre | Compressibility |
ISBN |
A computer code for a turbulent, compressible boundary-layer method, capable of carrying out computations in a region of separated flow, is developed and tested. The procedure after separation is to specify either friction velocity or boundary-layer thickness as an independent variable and obtain external velocity as a dependent variable. This requires a trial and error alternation of the specified variable in order to match the desired experimental or computed external velocity. Satisfactorily results were obtained by this method in the analysis of certain specialized cases of separated flow. (Author).
Technical Abstract Bulletin
Title | Technical Abstract Bulletin PDF eBook |
Author | |
Publisher | |
Pages | 818 |
Release | |
Genre | Science |
ISBN |