“drinking straw” problem (related to a CTQ)
Imagine you are very thirsty and attempt to finish a 12 oz soda in 20 seconds,
drinking through a standard straw (L = 8”, d = ¼”, L/d = 32).
1) Calculate the Reynolds number for this “pipe flow”
2) T or F (circle) The flow is laminar, but if you drink much faster, it could
become turbulent.
3) T or F (circle) This flow could be fully developed at the straw exit.
4) Calculate the pressure drop in the straw using the Moody Chart
5) Considering Figure 8.1, why is it wrong to use the Moody chart for this
straw.