Abstract
The present article focuses on the improvement of the two components of hybrid RANS/LES models. In the LES component, a Variational Multiscale (VMS) formulation (Hughes et al., Comput Vis Sci 3:47–59 (2000), [1]) is introduced with the dynamic control of Germano et al., Phys Fluids A 3(7):1760–1765 (1991), [2]. In the RANS component, an Organised Eddy Simulation (OES) model is used, (Bourguet et al., J. Fluids Struct 24(8):1240–1251 (2008), [3]; Shinde et al., J. Fluids Struct 47:99–113 (2014), [4]). The impact of these modifications on several critical flows past bluff bodies is analysed. These are the flow past cylinder at \(Re=140{,}000\) entering the critical regime because of blockage ratio confinement, a flow past a cylinder at \(Re=1{,}000{,}000\), as well as the flow past a tandem cylinder at \(Re=166{,}000\).
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Moussaed, C. et al. (2016). VMS and OES-Based Hybrid Simulations of Bluff Body Flows. In: Braza, M., Bottaro, A., Thompson, M. (eds) Advances in Fluid-Structure Interaction. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 133. Springer, Cham. https://doi.org/10.1007/978-3-319-27386-0_18
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DOI: https://doi.org/10.1007/978-3-319-27386-0_18
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