DocumentCode :
1217399
Title :
Superposition of Constant and Oscillatory Flows in a Rigid Cylindrcal Tube: Influence of Entrance Effects
Author :
Franken, H. ; Clément, J. ; Van de Woestijne, K.P.
Author_Institution :
GET
Issue :
4
fYear :
1986
fDate :
4/1/1986 12:00:00 AM
Firstpage :
412
Lastpage :
419
Abstract :
The interaction of constant and oscillatory flows in a cylindrical tube was studied theoretically and verified experimentally. The impedance of the tube predicted on the basis of a model dealing with this interaction was in good agreement with the observed values (between 2 and 32 Hz) provided the influence of entrance effects was taken into account. The study shows that the influence of a constant flow on oscillatory impedances is of minor importance within this range of frequencies. Entrance effects however, result in an overestimation of steady and oscillatory resistances. The latter increase with steady tlow, twice as rapidly for oscillatory as for steady flow resistance.
Keywords :
Fluid flow measurement; Fourier transforms; Impedance measurement; Laboratories; Navier-Stokes equations; Respiratory system; Temperature; Thermal conductivity; Thermal resistance; Viscosity; Biomedical Engineering; Biophysics; Humans; Models, Biological; Respiratory Physiology;
fLanguage :
English
Journal_Title :
Biomedical Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9294
Type :
jour
DOI :
10.1109/TBME.1986.325797
Filename :
4122304
Link To Document :
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