THINKING LIKE AN ENGINEER W/ACCESS
17th Edition
ISBN: 9781323522127
Author: STEPHAN
Publisher: PEARSON C
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Textbook Question
Chapter 9, Problem 4ICA
Calculate the numerical value of each of the dimensionless parameters listed in the table. Be sure to check that the ratio is actually dimensionless after you insert the values.
| Situation | Name | Expression | Value | |
| (a) | Air over a flat plate | Nusselt number, Nu |
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| (b) | Wind making a wire “sing” | Strouhal number, St |
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| Property | Symbol | Units | Value |
| Heat transfer coefficient | h | W/(m2 oC) | 20 |
| Thermal conductivity | k | W/(m K) | 0.025 |
| Plate length | L | ft | 2 |
| Air speed | va | mph | 60 |
| Oscillation frequency | ω | Hz or cycles/s | 140 |
| Wire diameter | Dwire | mm | 20 |
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Chapter 9 Solutions
THINKING LIKE AN ENGINEER W/ACCESS
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