Computation of the turbulent flow field around an aerofoil by k-ϵ-γ model in a non-staggered, C-type single-grid system
✍ Scribed by Kim, Ki Sup ;Chung, Myung Kyoon
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 804 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1069-8299
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✦ Synopsis
The whole turbulent flow field around a two-dimensional aerofoil is solved with a consistent numerical method on a single-grid system and with an intermittency implemented two-equation model, namely the k -c -y turbulence model in elliptic form. In order to solve the numerical instability problem arising from the branch-cut in C-type grids using the non-staggered finite-volume method, a new numerical technique is proposed to guarantee the correct velocity-pressure coupling along the branch-cut. The computational results are compared with those by the standard k-e model and experimental data. This study demonstrates the relative simplicity of the present C-type single grid system, and the capability is assessed of the k-cy equations for predicting turbulent flows consisting of both wall-free and wallbounded regions.