Implicit large eddy simulations of turbulent flow around a square cylinder at Re=22,000

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dc.contributor.authorZeng, Kai
dc.contributor.authorLi, Zhuoneng
dc.contributor.authorRana, Zeeshan A.
dc.contributor.authorJenkins, Karl W.
dc.date.accessioned2021-05-12T09:42:49Z
dc.date.available2021-05-12T09:42:49Z
dc.date.issued2021-05-07
dc.description.abstractIn this paper, the Implicit Large-Eddy Simulation (ILES) is investigated on the flow around a square cylinder incorporating an unstructured Weighted Essential Non-Oscillatory (WENO) reconstruction method for a Reynolds number of 22,000. Simulations are undertaken in the framework of open-source package OpenFOAM and additional implicit 2nd/3rd-order WENO scheme on the convective term of the viscous incompressible Navier-Stokes Equations. A 2nd-order Euler implicit time integration and Pressure-Implicit Splitting-Operator (PISO) algorithm is used to for the pressure-velocity coupling. Conventional LES with Wall Adapting Local Eddy Viscosity (WALE) model is also carried out as a baseline. The results are compared to high fidelity experiment, DNS data and conventional LES with dynamic Smagorinsky model from previous work. Results show favorable performance for ILES with 3rd-order WENO scheme compared with the conventional LES with dynamic Smagorinsky model and similar performance against LES with WALE model. Results also show acceptable predictions over time-averaged statistics with less computational effort for the ILES of 2nd-order WENO scheme. Shear layer flow analysis suggests that both ILES and LES face similar challenges with small quantities, such as shear stress. Finally, simulations are capturing Von Krmn vortex, Kelvin-Helmholtz instability and induced frequency changes.en_UK
dc.identifier.citationZeng K, Li Z, Rana ZA, Jenkins KW. (2021) Implicit large eddy simulations of turbulent flow around a square cylinder at Re=22,000. Computers and Fluids, Volume 226, August 2021, Article number 105000en_UK
dc.identifier.issn0045-7930
dc.identifier.urihttps://doi.org/10.1016/j.compfluid.2021.105000
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16669
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectSquare cylinderen_UK
dc.subjectShear Layeren_UK
dc.subjectTurbulent Flowen_UK
dc.subjectWENOen_UK
dc.subjectImplicit LESen_UK
dc.titleImplicit large eddy simulations of turbulent flow around a square cylinder at Re=22,000en_UK
dc.typeArticleen_UK

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