Simulation of Particle Trajectories in Bifurcating Tubes

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A numerical method for computing aerosol particle trajectories in bifurcating tubes has been elaborated. The model consists of three characteristic parts; (i) construction of the geometry of the bifurcation, (ii) calculation of the fluid flow field, and (iii) computation of the particle trajectories. The geometry was designed on a three-dimensional computer mesh. The flow field was formulated by solving the steady-state Navier-Stokes and Poisson equations with a finite difference approximation. The particle trajectories were generated having assumed the simultaneous action of inertial impaction, gravitational sedimentation, Brownian motion, and interception mechanisms. With a knowledge of particle trajectories one can examine the spatial distribution of deposition or the penetration efficiencies of particles in bifurcations. In this paper only the models is detailed; its usage in examining aerosol particle deposition in airway bifurcations is presented elsewhere for both inhalation and exhalation.

Original languageEnglish
Pages (from-to)11-22
Number of pages12
JournalJournal of Computational Physics
Volume110
Issue number1
DOIs
Publication statusPublished - Jan 1994

Fingerprint

particle trajectories
Trajectories
tubes
Particles (particulate matter)
Aerosols
aerosols
Flow fields
flow distribution
Satellite interception
simulation
exhalation
interception
Bifurcation (mathematics)
Geometry
Brownian movement
Poisson equation
respiration
geometry
Sedimentation
Navier-Stokes equation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Computer Science Applications

Cite this

Simulation of Particle Trajectories in Bifurcating Tubes. / Balásházy, I.

In: Journal of Computational Physics, Vol. 110, No. 1, 01.1994, p. 11-22.

Research output: Contribution to journalArticle

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