Modelling and experimental validation of subgrid scale scalar variance at high Schmidt numbers

Krzysztof Wojtas , Wojciech Orciuch , Łukasz Wysocki , Łukasz Makowski


This paper is focused on subgrid closure for fluctuations of the passive scalar concentration in liquids at different Schmidt numbers. Simulations and experiments were carried out in two impinging jet reactors of different geometries. Predicted distributions of concentration variance, obtained with the use of literature subgrid scale models, were compared with experimental findings obtained by planar laser induced fluorescence technique. The results of large eddy simulation supplemented with two subgrid-scale variance models are in very good agreement with experiments. Since simpler scale similarity LES model requires a priori defined value of model coefficient, further study of dynamic model is presented in this work. This work was supported by the by National Science Centre (Decision No DEC-2013/09/B/ST8/02869).
Author Krzysztof Wojtas (FCPE / DCRED)
Krzysztof Wojtas,,
- Department of Chemical Reactor Engineering and Dynamics
, Wojciech Orciuch (FCPE / DCRED)
Wojciech Orciuch,,
- Department of Chemical Reactor Engineering and Dynamics
, Łukasz Wysocki
Łukasz Wysocki,,
, Łukasz Makowski (FCPE / DCRED)
Łukasz Makowski,,
- Department of Chemical Reactor Engineering and Dynamics
Publication size in sheets0.5
Book The 22nd Polish Conference of Chemical and Process Engineering: Proceedings, 2016, Łódź, Faculty of Process and Environmental Engineering, ISBN 978-83-61997-75-7, 1584 p.
Proceedings OKIChiP 2016.pdf / No licence information (file archived - login or check accessibility on faculty)
Keywords in EnglishPLIF, large eddy simulation, mixing, subgrid scale scalar variance
Project[2013/09/B/ST8/02869 POLON] Large eddy simulations of complex chemical processes in jets reactors. Project leader: Makowski Łukasz, , Phone: 22 234 62 94, start date 20-02-2014, Implemented
WIChiP Projects financed by NSC [Projekty finansowane przez NCN]
Languageen angielski
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