Bioengineer Rebecca Studies Blood
Flow in Capillary Vessels.
Bioengineer Rebecca is modeling the flow of blood plasma in capillary
blood vessels. One of the important dimensionless parameters in modeling
blood flow is the Reynolds number. She wonders what Reynolds number is associated
with the blood flow, and if the flow is laminar or turbulent. The capillary
vessel has a diameter of 10-5 m, and the plasma flows at a speed of 2.25 mm/s.
Questions
Determine the Reynolds number for the blood
flow in a capillary vessel.
Blood Flow in Vessel
Approach
Assume the blood vessel is not collapsible (i.e., the vessel wall is not deformable, and it maintains the circular cross section).
The density and viscosity of the blood plasma is 980 kg/m3 and 0.0014 N-s/m2, respectively.
Determine if the flow is laminar or turbulent based on flow in a circular tube model.
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