Concentration of charged nanoparticles in the human trachea; Effects of Cartilaginous Rings

M. Chitra; S. Radhakrishnan

Volume : VI, Issue : I, January - 2017

Concentration of charged nanoparticles in the human trachea; Effects of Cartilaginous Rings

M. Chitra, S. Radhakrishnan

Abstract :

This paper presents an analytical study of the concentration of the charged nano–particles caused by convection, Brownian diffusion and electrostatics that are deposited in a human trachea. The upper airways are characterised by a certain wall structure called cartilaginous rings which modify the particle is compared to an airway with smooth wall and tube with cartilaginous rings with electrostatic parameter(α), and tube radius(r) and low Reynolds numbers(Re). The problem is defined by solving Navier–stokes equations in combination with a convective–diffusion equation and Gauss law for electrostatics. Three non–dimensional parameters describe the problem, the Pecklet number , the Reynolds number and an electrostatic parameter . Here is the mean velocity, R is the pipe radius and D is the diffusion co–efficient due to Brownian motion given by , where Cu is the Cunnigham–factor C . Here d is the particle diameter and λ the mean free path of the air molecules. Here we study the concentration of charged nano– particles of cartilaginous rings of wall structure, and airway with smooth wall for varying electrostatic parameters and low Reynolds numbers in the trachea of deposition of charged particles in human airways. < clear="all" style="page–eak–before:always;mso–eak–type:section–eak" />