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Effects of hematocrit level on the oscillatory flow characteristic of blood in a stenosed artery

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EN
Abstrakty
EN
In this paper, a simple model for the oscillatory flow of blood through a stenosed artery is considered. Blood is considered throughout the whole tube (arterial) to be a suspension mainly of red ceIls. A standard distribution of the red celIs is assumed which is based on the idea that the concentration of the red celIs and hence viscosity of blood is higher towards the center of the tube. In effect, viscosity as assumed to vary radialIy. Analytical expressions for the axial velocity, the volumetric flow rate, resistive impedance and phase lag are derived. Effects of hematocrit level on these flow characteristics are discussed.
Rocznik
Strony
1103--1115
Opis fizyczny
Bibliogr. 9 poz., rys., wykr.
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Bibliografia
  • Back L.D., Radbill J.R. and Crawford D.W. (1977): Analysis of pulsatile viscous blood flow through diseased coronary arteries of man. - J. Biomech., vol.10, pp.339-353.
  • Forrester J.H. and Young D.F. (1970): Flow through a converging-diverging tube and its implications in occlusive vascular disease. - J. Biomech., vol.3, pp.297-316.
  • Lih M.M. (1975): Transport Phenomena in Medicine and Biology. - New York: John Wiley and Sons, pp.378-414.
  • Newman D.L., Westerhof N. and Sipkema P. (1979): Modelling of aortic stenosis. - J. Biomech., vol.12, pp.229-235.
  • Oliver D.R. and Ward S.G. (1953): Relationship between relative viscosity and volume concentration of stable suspensions of spherical particles. - Nature, vol.4348, pp.396-397.
  • Siegel J.M., Markou C.P., Ku D.N. and Hanson S.R. (1994): A scaling law for wall shear rate through an arterial stenosis. - J. Biomech. Eng. Trans. ASME, vol.116, pp.446-451.
  • Womersley J.R. (1955): Oscillatory motion of a viscous liquid in a thin walled elastic tube. - Phil. Mag., vol.46, pp.199-221.
  • Young D.F. (1968): Effect of time dependent stenosis on flow through a tube. - J. Eng. for Industry, Trans. ASME, vol.90, pp.248-254.
  • Young D.F. and Tsai F.Y. (1973): Flow characteristics in models of arterial stenosis. I. Steady Flow. II Unsteady flow. - J. Biomech., vol.6, pp.395 and pp.547.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0034-0040
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