Oscillatory flow distribution at a bifurcation

Author

Keyer, Willem ; Savilonis, Brian

Author_Institution

Dept. of Mech. Eng., Worcester Polytech. Inst., MA, USA

fYear

1991

fDate

4-5 Apr 1991

Firstpage

85

Lastpage

86

Abstract

Flow-distribution in a 90° bifurcated airway during high-frequency oscillation is analyzed by numerical simulation. The parent and two daughter branches are of equal length and diameter, describing a T-junction rotated by 90°. The flow is considered laminar and incompressible, which is reasonable for small tidal volumes. The solution has been limited to two-dimensional channels, merely by the constraint of computational time. The equations are solved using a finite-difference formulation. Depending on the Reynolds and Strouhal numbers, it was possible to direct larger fractions of the tidal volume to either of the daughter ducts

Keywords

pneumodynamics; 2D channels; Reynolds number; Strouhal number; bifurcated airway; daughter ducts; finite-difference formulation; high-frequency oscillation; numerical simulation; oscillatory flow distribution; tidal volume; Bifurcation; Brain modeling; Difference equations; Ducts; Frequency; Mechanical engineering; Navier-Stokes equations; Numerical simulation; Poisson equations; Ventilation;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 1991., Proceedings of the 1991 IEEE Seventeenth Annual Northeast

Conference_Location

Hartford, CT

Print_ISBN

0-7803-0030-0

Type

conf

DOI

10.1109/NEBC.1991.154591

Filename

154591