Viscosity and Poiseuille Flow (4B)
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QUESTION
What is the relationship between maximum and average speed in Poiseuille flow?
QUESTION
What SI unit is used for kinematic viscosity
ν
\nu
ν
?
QUESTION
If viscosity triples (
η
→
3
η
\eta\to 3\eta
η
→
3
η
), by what factor does
Q
Q
Q
change (Poiseuille, constant
Δ
P
\Delta P
Δ
P
)?
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ANSWER
Q
Q
Q
decreases by a factor of
3
3
3
. Tripling viscosity reduces flow rate to one-third, as it inversely scales in Poiseuille flow under constant conditions.
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