Evaluation of a Correlation-Based Transition Model and Comparison with the eN-method

Kurzfassung

The correlation-based γ-Reθ transition model has been implemented into a hybrid Reynolds-averaged Navier-Stokes solver and evaluated on various test cases. The original model formulation and recently published approaches of different authors for relevant empirical model functions as well as different transition criteria are compared. The prediction of transition with the correlation-based model was applied to a zero pressure gradient flat plate test case and some well known one-element airfoil test cases. Comparison with the standard approach for transition prediction in the flow solver used based on the eN-method was accomplished. Simulation results in terms of transition locations and skin friction coefficient distributions, performance and arising difficulties of both models for the various test cases are presented and discussed.