Water at 10 C flows in a 3-cm-diameter pipe at a velocity of 1.5 m/s. The Reynolds number for this flow is ? 34420 QUESTION 2 Air at 1 atm and 20 C flows in a 2.5-cm-diameter tube. The maximum velocity (m/s) of air to keep the flow laminar is ? 1.64 QUESTION 3 Consider laminar flow of water in a 0.9-cm-diameter pipe at a rate of 1.25 Lmin. The velocity (m/s) of water halfway between the surface and the center of the pipe is ?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
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Author:Kreith, Frank; Manglik, Raj M.
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Chapter6: Forced Convection Over Exterior Surfaces
Section: Chapter Questions
Problem 6.15P
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QUESTION 1
Water at 10 C flows in a 3-cm-diameter pipe at a velocity of 1.5 m/s. The Reynolds number for this flow is ?
34420
QUESTION 2
Air at 1 atm and 20 C flows in a 2.5-cm-diameter tube. The maximum velocity (m/s) of air to keep the flow laminar is ?
1.64
QUESTION 3
Consider laminar flow of water in a 0.9-cm-diameter pipe at a rate of 1.25 L/min. The velocity (m/s) of water halfway between the surface and the center of the pipe is ?
0.572
Transcribed Image Text:QUESTION 1 Water at 10 C flows in a 3-cm-diameter pipe at a velocity of 1.5 m/s. The Reynolds number for this flow is ? 34420 QUESTION 2 Air at 1 atm and 20 C flows in a 2.5-cm-diameter tube. The maximum velocity (m/s) of air to keep the flow laminar is ? 1.64 QUESTION 3 Consider laminar flow of water in a 0.9-cm-diameter pipe at a rate of 1.25 L/min. The velocity (m/s) of water halfway between the surface and the center of the pipe is ? 0.572
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