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EPTT 2024
14th Spring School on Transition and Turbulence
Turbulent Channel flow with Coriolis force using Large-Eddy Simulation
Submission Author:
Igor De MELO , SP , Brazil
Co-Authors:
Igor De MELO, Livia S. Freire, Leandro Franco de Souza, Matheus Tozo de Araujo
Presenter: Leandro Franco de Souza
doi://10.26678/ABCM.EPTT2024.EPT24-0050
Abstract
In this study, Large-Eddy Simulation (LES) was employed to investigate the behavior of the flow in a turbulent channel subjected to different Coriolis forces (0, 0.018, 0.054, 0.091). The results obtained were compared with the Direct Numerical Simulations (DNS) of Mehdizadeh and Oberlack (2010), who analyzed the behavior of the Poiseuille-Ekman flow for various rotation rates. Two subgrid-scale models were tested in the non-rotating case, and the Lagrangian Average Scalar-Invariant (LASI) method was selected for its superior proximity to the DNS results. The LES simulations confirmed a reduction in the effect of turbulence as the non-inertial Coriolis force increased. This finding was validated through the analysis of turbulent energy and also showed accordance with the Reynolds shear stress and average velocity profiles from the DNS data.
Keywords
Turbulent flow, atmospheric boundary layer, Large Eddy Simulation, Coriolis
