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A small round object is tested in a 0.75-m diameter wind tunnel. The pressure is uniform across secetions (1) and (2). The upstream pressure is 30 mm H2O (gage), the downstream pressure is 15 mm H20 (gage), and the mean air speed is 12.5 m/s. The velocity profile at seetion (2) is linear; it varies from zero at the tunnel centerline to a maximum at the tunnel wall. Calculate a) the mass flow rate in the wind tunnel, b) the maximum velocity at section (2), and e) the drag of the object and its supporting vane. Neglect viscous resistance at the tunnel wall.

A small round object is tested in a 0.75-m diameter wind tunnel. The pressure is uniform across secetions (1) and (2). The upstream pressure is 30 mm H2O (gage), the downstream pressure is 15 mm H20 (gage), and the mean air speed is 12.5 m/s. The velocity profile at seetion (2) is linear; it varies from zero at the tunnel centerline to a maximum at the tunnel wall. Calculate a) the mass flow rate in the wind tunnel, b) the maximum velocity at section (2), and e) the drag of the object and its supporting vane. Neglect viscous resistance at the tunnel wall.

Elements Of Electromagnetics
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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Question 2 A small round object is tested in a 0.75-m diameter wind tunnel. The pressure is uniform across sections (1) and (2). The upstream pressure is 30 mm H20 (gage), the downstream pressure is 15 mm H20 (gage), and the mean air speed is 12.5 m/s. The velocity profile at section (2) is linear; it varies from zero at the tunnel centerline to a maximum at the tunnel wall. Calculate a) the mass flow rate in the wind tunnel, b) the maximum velocity at section (2), and c) the drag of the object and its supporting vane. Neglect viscous resistance at the tunnel wall. V-
Transcribed Image Text:Question 2 A small round object is tested in a 0.75-m diameter wind tunnel. The pressure is uniform across sections (1) and (2). The upstream pressure is 30 mm H20 (gage), the downstream pressure is 15 mm H20 (gage), and the mean air speed is 12.5 m/s. The velocity profile at section (2) is linear; it varies from zero at the tunnel centerline to a maximum at the tunnel wall. Calculate a) the mass flow rate in the wind tunnel, b) the maximum velocity at section (2), and c) the drag of the object and its supporting vane. Neglect viscous resistance at the tunnel wall. V-
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