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Your title goes here. Your subtitle goes here. -Re Transition Model. Most empirical models unsuited to unstructured CFD Use non-local quantities (e.g., streamwise distance, q , etc.) -Re allows empirical correlations to be used as local quantities
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Your title goes here Your subtitle goes here
-ReTransition Model • Most empirical models unsuited to unstructured CFD • Use non-local quantities (e.g., streamwise distance, q, etc.) • -Re allows empirical correlations to be used as local quantities • Works with the SST k-w turbulence model • Solves two additional transport equations • Intermittency • Reqt • Developed by Menter and Langtry (of ANSYS) • Allows empirical correlations to be used as local quantities • but critical correlations hitherto unpublished • CD-adapco have reverse-engineered these correlations with assistance from university researchers in Thailand! • Validated for natural, bypass and laminar-separation transition
-ReTransition Model Equations Intermittency: unpublished Local transition momentum thickness Reynolds number:
Model Calibration Using Ercoftac Data Calibrated Correlations Ercoftac Flat Plate Test Results
Practical Application: F1 Rear Wing Laminar separation Transition Turbulent separation Photo courtesy of Renault F1