Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will______________________?
Correct answer: A. Increase
- A. Increase
- B. Decrease
- C. Remain same
- D. Data insufficient to predict pressure drop
Explanation
Both flows are laminar, so pressure drop at fixed velocity is proportional to viscosity. The new liquid has a viscosity five times that of water, causing the pressure drop to increase.
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