Flow past a row of trapezoidal tabs: experimental and numerical study
Résumé
Trapezoidal mixing tabs are used to generate complex coherent structures: a counter-rotating vortex pair and hairpin like structures develop downstream the tab. The flow pattern of these vortical structures and their interaction has been analyzed and comprehended recently. Nevertheless, the individual contribution of these structures on turbulent mixing and micro mixing are not yet well understood, and remain importantsake for the purpose of transfer intensification in industrial devices like the HEV mixer. The present study is a first attempt of analysis of these contributions, based onboth experimental (LDV) and numerical approaches for the knowledge of the 3D flow structures.
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