Inscrição na biblioteca: Guest
TSFP DL Home Arquivos Comitê executivo

LES OF THE FLOW AROUND A CYLINDER OF FINITE HEIGHT

Jochen Frohlich
Institute for Technical Chemistry und Polymer Chemistry University of Karlsruhe; Institute of Fluid Mechanics, Dresden University of Technology, George-Bähr-Str. 3c, D-01062, Germany

Wolfgang Rodi
Institute for Hydromechanics,University of Karlsruhe, D-76128 Karlsruhe, Germany

Resumo

The paper presents large eddy simulations of the flow around a surface-mounted circular cylinder at a Reynolds number of Re = 43000 of height H = 2.5D. In the first part, the different modelling parameters are discussed with respect to their influence on the computed results. One of the findings is that, on the relatively coarse grid employed, the dynamic model is deficient as it yields too large eddy viscosities. The results obtained with the Smagorinsky model are in fairly good agreement with measurements. In the second part of the paper these results are evaluated in detail and related to findings in the literature.