FREE ABSTRACT (to read the full article, please log in below).
Presented in this paper is a preliminary numerical study of the hydrodynamic
removal of contaminants contained in cavities which are situated on the
floor of a two-dimensional duct. Applications include the cleaning of fouled
rough surfaces which may occur in the food and chemical processing industries.
The process of fluid renewal in a cavity is modelled via a numerical solution
of the Navier-Stokes equations for transient flows. The results show that
cavity cleaning occurs at a higher rate during the first several pulsating
cycles and gradually diminishes with the increase of the pulsating cycles.
It also shows that pulsating duct flow enhances cavity cleaning to compare
with the cleaning that is achieved with uniform flow.
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© Copyright 2001 Professor F.R. Hall - University of Wolverhampton.