COMPUTATION OF THE TURBULENT-FLOW FIELD AROUND AN AEROFOIL BY K-EPSILON-GAMMA MODEL IN A NON-STAGGERED, C-TYPE SINGLE-GRID SYSTEM

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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-epsilon-gamma 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-epsilon 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-epsilon-gamma equations for predicting turbulent flows consisting of both wall-free and wall-bounded regions.
Publisher
JOHN WILEY & SONS LTD
Issue Date
1995-11
Language
English
Article Type
Article
Keywords

SHEAR FLOWS; WAKE

Citation

COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING, v.11, no.11, pp.873 - 886

ISSN
1069-8299
DOI
10.1002/cnm.1640111102
URI
http://hdl.handle.net/10203/70044
Appears in Collection
ME-Journal Papers(저널논문)
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