Computation of high speed turbulent boundary-layer flows using the k–ϵ turbulence model

✍ Scribed by A. Liakopoulos

• Publisher: John Wiley and Sons
• Year: 1985
• Tongue: English
• Weight: 991 KB
• Volume: 5
• Category: Article
• ISSN: 0271-2091
• DOI: 10.1002/fld.1650050107

✦ Synopsis

The applicability of a finite element-differential method to the computation of steady two-dimensional lowspeed, transonic and supersonic turbulent boundary-layer flows is investigated. The turbulence model chosen for the Reynolds shear stress and turbulent heat flux is the k-t. two-equation model. Calculations are extended up to the wall and the exact values of the dependent variables at the wall are used as boundary conditions. A number of transformations are carried out and the assumed solutions at a longitudinal station are represented by complete cubic spline functions. In essence, the method converts the governing partial differential equations into a system of ordinary differential equations by a weighted residuals method and invokes an ordinary differential equation solver for the numerical integration of the reduced initial-value problem. The results of the computations reveal that the method is highly accurate and efficient. Furthermore, the accuracy and applicability of the k-e turbulence model are examined by comparing results of the computations with experimental data. The agreement is very good.