Problem $41.($Using the Critical Reynolds Number to classify flow types$)$

Compute the Reynolds number Re $=$ U L$/$ for the relevant length and velocity scales. Compare

the Reynolds number that you computed to the given experimentally$-$based critical Reynolds

number for rough pipe and duct flow, which is Recrit $=2300,$ to determine if the flow field is

most likely laminar or turbulent.

Liquid Newtonian Honey, at room temperature of $20$C$,$ flows out of a $1$ cm diameter straw

with an average speed of $1$ cm$/$s$.$ Take the kinematic viscosity of honey at room temperature

to be $(20$C$)=1$

$142$

m$2$

s $\mathrm{.}1$

$($a$)$ Flow is most likely laminar.

$($b$)$ Flow is most likely turbulent.

$($c$)$ Flow is too close to critical value to give a definitive answer.

$($d$)$ Not enough information