3-DIMENSIONAL RECIRCULATION FLOW IN A BACKWARD-FACING STEP

Authors
SHIH C HO CM
Citation
C. Shih et Cm. Ho, 3-DIMENSIONAL RECIRCULATION FLOW IN A BACKWARD-FACING STEP, Journal of fluids engineering, 116(2), 1994, pp. 228-232
Citations number
15
Categorie Soggetti
Engineering, Mechanical
Journal title
Journal of fluids engineering → ACNP
ISSN journal
00982202
Volume
116
Issue
2
Year of publication
1994
Pages
228 - 232
Database
ISI
SICI code
0098-2202(1994)116:2<228:3RFIAB>2.0.ZU;2-A
Abstract
The flow field behind a small aspect ratio (channel width/step height = 3) backward-facing step is examined using laser Doppler anemometer. All three velocity components inside the separation region are surveye d in detail. The velocity profile just upstream of the step is laminar and two-dimensional. The velocity field reveals that the reattachment and the flow in the recirculation zone are highly three-dimensional d ue to the small aspect ratio.