Main Article Content

Effect of duct orientation on particle deposition in the human respiratory tract


SK Asiedu-Addo
DE Bentil

Abstract

A two-dimensional model of transport and deposition of particles in the human acinus is formulated. The model simulates airway generations 20-23 of the respiratory tract by solving numerically the system of Navier-Stokes equations for continuity and momentum. The finite volume method under the platform of the FLUENT code was employed to perform the numerical calculations and the fully implicit discretization approach was used for discretizing the transient equations on the grounds of its superior stability. The simulations of macron size particles (1-5 μm) show that the existence of alveolar re-circulation and gravity orientation are key factors in determining the deposition in the last four generations of the human respiratory tract.

Keywords: duct orientation, particle deposition, respiratory tract, discretization approach

African Journal of Educational Studies in Mathematics and Sciences Vol. 9, 2011

Journal Identifiers


eISSN: 2508-1128
print ISSN: 0855-501X