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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Imprimer: 1065-3090
ISSN En ligne: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v11.i1.30
10 pages

TEMPERATURE-GRADIENT CONTROL OF FLOW SEPARATION PHENOMENON ON A CURVED SURFACE

Wen-Jei Yang
Department of Mechanical Engineering and Applied Mechanics University of Michigan, Ann Arbor, Michigan 48109-2125, U.S.A.

RÉSUMÉ

A numerical study is performed to investigate steady-state thermal and fluid flow transport phenomena of the vertical free jet, which is placed to the surface with the longitudinal convex curvature. Emphasis is placed on the effects of the Reynolds number, Re, and temperature difference between the jet and the heating surface, ∆T, on velocity and thermal fields. It is found that (i) the flow direction of the jet along the curved surface is controlled by Re and ∆T, (ii) as the curved surface is strongly heated, the separation flow is suppressed, resulting in the flow attached on the surface, and (iii) the attached flow is changed to the separated flow with an increase in the Reynolds number.