Pulsating Flow in a Channel With a Backward-Facing Step

[+] Author and Article Information
Alvaro Valencia

Departamento de Ingeniería Mecánica, Universidad de Chile, Casilla 2777, Santiago, Chile

Appl. Mech. Rev 50(11S), S232-S236 (Nov 01, 1997) doi:10.1115/1.3101841 History: Online April 20, 2009


The incompressible laminar flow in a channel with a backward-facing step is studied for steady cases and for pulsating inlet flow conditions. For steady flows, the influrnce of the inlet velocity profile, the height of the step, and the Reynolds number on the reattachment length is investigated. A parabolic entrance profile was used for pulsating flow. It was found with amplitude of oscillation of one by Re = 100 that the primary vortex breakdown through one pulsatile cycle and the wall shear stress in the separation zone varied markedly with pulsating inlet flow.

Copyright © 1997 by American Society of Mechanical Engineers
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