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- W2017885518 abstract "Large eddy simulation (LES) is performed to study the uniform approach flow over a square-section cylinder with different Reynolds numbers, ranging from 103 to 5 × 106. Two different sub-grid scale models, the Smagorinsky and a dynamic one-equation model, are employed. An incompressible finite-volume code, based on a non-staggered grid arrangement and an implicit fractional step method with second-order accuracy in space and time, is used. The structure of the flow is studied with the instantaneous and the mean quantities such as pressure, turbulent stresses, turbulent kinetic energy, vorticity, the second invariant of velocity gradient and streamlines. The Strouhal number, the mean and RMS values of the lift and drag are computed for various Reynolds numbers, which show a good agreement with the available experimental results. It is found that the effect of Reynolds number on the global quantities, the mean and the large scale instantaneous flow-structures is not much at the higher Reynolds numbers, i.e. Re > 2 × 104. In this range of Reynolds numbers, the small scales of the instantaneous structures are more complex and chaotic as they compare with the larger ones." @default.
- W2017885518 created "2016-06-24" @default.
- W2017885518 creator A5015778913 @default.
- W2017885518 date "2006-12-01" @default.
- W2017885518 modified "2023-10-15" @default.
- W2017885518 title "Flow over a bluff body from moderate to high Reynolds numbers using large eddy simulation" @default.
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- W2017885518 doi "https://doi.org/10.1016/j.compfluid.2005.05.007" @default.
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