1. A given pipe first carries water and then carries air at 15°C and atmospheric pressure. What is the ratio of the mass discharge rates and the volume discharge rates, if the friction factors were the same for these two flows? 2. Two horizontal pipes of the same length and relative roughness carry air and water, respectively, at 60°F. The velocities are such that the Reynolds numbers and pressure drops for each pipe are the same. Find the ratio of the average air velocity to water velocity.
1. A given pipe first carries water and then carries air at 15°C and atmospheric pressure. What is the ratio of the mass discharge rates and the volume discharge rates, if the friction factors were the same for these two flows? 2. Two horizontal pipes of the same length and relative roughness carry air and water, respectively, at 60°F. The velocities are such that the Reynolds numbers and pressure drops for each pipe are the same. Find the ratio of the average air velocity to water velocity.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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1. A given pipe first carries water and then carries air at 15°C and atmospheric pressure. What is the ratio of the mass discharge rates and the volume discharge rates, if the friction factors were the same for these two flows?
2. Two horizontal pipes of the same length and relative roughness carry air and water, respectively, at 60°F. The velocities are such that the Reynolds numbers and pressure drops for each pipe are the same. Find the ratio of the average air velocity to water velocity.
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