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Abstract

In rigid tubes with laminar flow and Newtonian fluids (the arterial system fulfills only the criterion for laminar flow), the following physical laws apply:

the Hagen-Poiseuille law
$$I=\frac{\Delta p\cdot {{r}^{4}}\cdot \pi }{8\cdot \eta \cdot L}$$
(1)
where I = the volume flow, which is measured in ml/min, ... p = the difference between the pressure at the beginning and at the end of the tube, r = the radius, π = the viscosity of the blood, η= a constant, and L = the length of the tube. The volume flow I = volume per time (t) and the volume is the product of the cross-section of the tube Q and the length.

Keywords

Laminar Flow Volume Flow Newtonian Fluid Collateral Circulation Pulsatile Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Wien 1986

Authors and Affiliations

  • Albrecht G. Harders
    • 1
  1. 1.Neurochirurgische Universitätsklinik Freiburg i. Br.Federal Republic of Germany

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