Mechanics of blood flow in arteriolar and venular bifurcations

Aleksander S. Popel, Giora Enden, Joseph Ong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Results of ongoing theoretical computational studies of blood flow in arteriolar and venular bifurcations are presented. In arteriolar bifurcations, the blood is modeled as a two-phase continuum, with a central core that is a concentrated suspension of red blood cells and with a layer of plasma adjacent to the vessel wall; the fluids are assumed to be Newtonian with different constant viscosities. The evolution of the two phases as the blood flows through the arteriolar bifurcation is studied. In venular bifurcations, two converging streams are modeled as Quemada-type thixotropic fluids with different hematocrits. The streams are followed through the bifurcation as they fold and form a strongly asymmetric velocity profile at the outlet cross section. These models yield predictions of the hematocrit and the velocity distribution downstream from arteriolar and venular bifurcations. The implications of these results for blood flow in microvascular networks are discussed.

Original languageEnglish (US)
Title of host publicationAdvaces in Biological Heat and Mass Transfer - 1992
PublisherPubl by ASME
Pages105-111
Number of pages7
ISBN (Print)0791811115
StatePublished - Dec 1 1992
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Anaheim, CA, USA
Duration: Nov 8 1992Nov 13 1992

Publication series

NameAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume231
ISSN (Print)0272-5673

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAnaheim, CA, USA
Period11/8/9211/13/92

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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  • Cite this

    Popel, A. S., Enden, G., & Ong, J. (1992). Mechanics of blood flow in arteriolar and venular bifurcations. In Advaces in Biological Heat and Mass Transfer - 1992 (pp. 105-111). (American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD; Vol. 231). Publ by ASME.