The behaviour of the flow over a finite blunt plate with square leading and trailing edge corners at moderate Reynolds number is studied by means of a Direct Numerical Simulation. The chord-to-thickness ratio of the plate is 5 and the Reynolds number is Re = U∞ · D/ν = 3 × 103 where U∞ and D are the free-stream velocity and the thickness, respectively. The flow separates at the leading edge corner developing in a strong free-shear. The flow reattaches on the solid surface upstream the trailing edge and evolves in typical large-scale shedding beyond it. To the authors knowledge, this is the first time that high-fidelity three-dimensional data are produced to analyze in detail the flow features of such a system. Preliminary results on the flow topology will be presented in this work. In particular, the streamlines of the mean flow and the instantaneous three-dimensional turbulent structures via λ2 vortex criterion will be examinated.

Structure of turbulence in a flow around a rectangular cylinder / Leonforte, Adriano; Cimarelli, Andrea; Angeli, Diego. - 196:(2017), pp. 233-238. [10.1007/978-3-319-57934-4_33]

Structure of turbulence in a flow around a rectangular cylinder

Leonforte, Adriano;Cimarelli, Andrea;Angeli, Diego
2017

Abstract

The behaviour of the flow over a finite blunt plate with square leading and trailing edge corners at moderate Reynolds number is studied by means of a Direct Numerical Simulation. The chord-to-thickness ratio of the plate is 5 and the Reynolds number is Re = U∞ · D/ν = 3 × 103 where U∞ and D are the free-stream velocity and the thickness, respectively. The flow separates at the leading edge corner developing in a strong free-shear. The flow reattaches on the solid surface upstream the trailing edge and evolves in typical large-scale shedding beyond it. To the authors knowledge, this is the first time that high-fidelity three-dimensional data are produced to analyze in detail the flow features of such a system. Preliminary results on the flow topology will be presented in this work. In particular, the streamlines of the mean flow and the instantaneous three-dimensional turbulent structures via λ2 vortex criterion will be examinated.
Springer Proceedings in Physics
http://www.springer.com/series/361
9783319579337
Springer Science and Business Media, LLC
Structure of turbulence in a flow around a rectangular cylinder / Leonforte, Adriano; Cimarelli, Andrea; Angeli, Diego. - 196:(2017), pp. 233-238. [10.1007/978-3-319-57934-4_33]
Leonforte, Adriano; Cimarelli, Andrea; Angeli, Diego
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1156026
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