Inscrição na biblioteca: Guest
TSFP DL Home Arquivos Comitê executivo

BUOYANCY INDUCED 3D-TRANSITION BEHIND A HEATED CYLINDER

Maosheng Ren
Laboratory for Energy Technology, Department of Mechanical Engineering Eindhoven University of Technology P.O.Box 513, 5600 MB Eindhoven, The Netherlands

Camilo C. M. Rindt
Eindhoven University of Technology, Department of Mechanical Engineering, P.O.Box 513, 5600MB Eindhoven, The Netherlands

Anton A. van Steenhoven
Faculty of Mechanical Engineering, Energy Technology Section, Den Dolech 2, 5600MB, Eindhoven, The Netherlands

Resumo

3D-transition behind a heated cylinder is studied at low Reynolds numbers. Both experimental and numerical techniques are used, including an electro-chemical tin-precipitation visualization method and a 3D Spectral Ele-ment Method. It is observed that 3D vortical structures are formed directly behind the cylinder. Distinct counter-rotating vortices are observed and they are associated with a non-uniform temperature distribution along the spanwise direction in the near-wake. These vortices induce thermal plumes to escape from the upper braid in the far-wake.