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Q 2 . Capillary viscometer ( re - exam 2 0 2 2 ) A capillary viscometer with a radius R of 4 7 2
Q Capillary viscometer reexam
A capillary viscometer with a radius of and a length of of has been used to
measure the whole blood viscosity at The figure indicates the flow rate as a function of
the pressure gradient for a Hematocrit value of
a Determine the viscosity in and wall shearing
rate in for the measurements with the
lowest and highest flowrate. Note that can be
estimated using
p b Indicate whether the fluid is Newtonian or Non
Newtonian and if it's viscosity is within normal
range for blood.
p c Estimate the force required to overcome the
yield shear stress, thereby initiating the flow.
p d Determine the pressure gradient in if the
Hematocrit value of blood would be
Consider this for the measurement at the highest
flowrate.
If you did not find an answer for the viscosity at
the highest flowrate at a assume a viscosity of
at a Hematocrit value of
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