Title :
Oscillatory flow distribution at a bifurcation
Author :
Keyer, Willem ; Savilonis, Brian
Author_Institution :
Dept. of Mech. Eng., Worcester Polytech. Inst., MA, USA
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;
Conference_Titel :
Bioengineering Conference, 1991., Proceedings of the 1991 IEEE Seventeenth Annual Northeast
Conference_Location :
Hartford, CT
Print_ISBN :
0-7803-0030-0
DOI :
10.1109/NEBC.1991.154591
