Engineering Board Exam Reviewer · Fluid Mechanics · hard
Oil with = 1 × 10-4 m2/s flows at 1 m/s through a 100 mm pipe 100 m long. What is the friction head loss?
- 3.262 m
- 1.019 m
- 0.815 m
- 6.524 m
Answer
A. 3.262 m
Solution
Re = VD/ = 1(0.1)/10-4 = 1000 (laminar). f = 64/Re = 0.064. hf = 0.064(100/0.1)(12/19.62) = 3.262 m.
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