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Engineering and Tech / Fluid Mechanics 2 / Chapter 5 / Problem 99P

Fluid Mechanics | 2nd Edition | ISBN: 9780071284219 | Authors: Yunus A. Cengel, John M. Cimbala

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Air at 100 kPa and 25°C flows in a horizontal duct of

Chapter 5, Problem 99P

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QUESTION:

Problem 99P

Air at 100 kPa and 25°C flows in a horizontal duct of variable cross section. The water column in the manometer that measures the difference between two sections has a vertical displacement of 8 cm. If the velocity in the first section is low and the friction is negligible, determine the velocity at the second section. Also, if the manometer reading has a possible error of ±2 mm, conduct an error analysis to estimate the range of validity for the velocity found.

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QUESTION:

Problem 99P

Air at 100 kPa and 25°C flows in a horizontal duct of variable cross section. The water column in the manometer that measures the difference between two sections has a vertical displacement of 8 cm. If the velocity in the first section is low and the friction is negligible, determine the velocity at the second section. Also, if the manometer reading has a possible error of ±2 mm, conduct an error analysis to estimate the range of validity for the velocity found.

ANSWER:

Solution to 99P

Step 1

In this question, we need to find the velocity at the second section of the horizontal duct and we also need to do error analysis to estimate the range of validity for the computed velocity.

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