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Firm structure of the separated turbulent shear layer behind modified backward-facing step geometries
, Article International Journal of Numerical Methods for Heat and Fluid Flow ; Volume 16, Issue 7 , 2006 , Pages 803-826 ; 09615539 (ISSN) ; Taeibi Rahni, M ; Naderi, A.R ; Sharif University of Technology
2006
Abstract
Purpose - One major challenge in turbulent flow applications is to control the recirculation zone behind the backward-facing step (BFS). One simple idea to do so is to modify the original BFS geometry, of course, without causing adverse or undesirable impacts on the original characteristics of the primary stream. The main objective of this work is to examine the solidity of the recirculation zone behind several different geometries which are slightly to moderately different from the original BFS geometry. Design/methodology/approach - The implemented modifications cause complicated irregularities at the boundaries of the domain. The experience shows that the mesh distribution around these...