Further Developments to a Local Correlation Based Roughness Model for Boundary Layer Transition Prediction

Exploring foci of: 53rd AIAA Aerospace Sciences Meeting Further Developments to a Local Correlation Based Roughness Model for Boundary Layer Transition Prediction January 2015 • Christopher M. Langel, Raymond Chow, Case P. Van Dam A study has been conducted to improve the correlations within a computational roughness amplification model implemented in the unsteady RANS solver OVERFLOW-2. The model extends the Langtry-Menter transition model by introducing an additional scalar field roughness amplification quantity, Ar. This additional variable and transport equation allows non-local effects of surface roughness to be accounted for downstream of rough sections. Initially the model was not equipped to account for the influence of a strong loc… Open Article Page

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