5. A wind tunnel consists of an entry contraction, a constant-area working section of area 0.5 m?, a diffuser and a fan of area 1 m?, as shown in Fig. 2. The air is pulled from the atmosphere through the contraction into the working section where its speed is 20 m/s, and from there it flows through the diffuser into the fan, which returns it to the atmosphere. Calculate the static and stagnation pressures at: a. The working section b. The inlet to the fan c. The exit from the fan, assuming no change in air speed across the fan. d. Calculate the power supplied by the fan to the air.
5. A wind tunnel consists of an entry contraction, a constant-area working section of area 0.5 m?, a diffuser and a fan of area 1 m?, as shown in Fig. 2. The air is pulled from the atmosphere through the contraction into the working section where its speed is 20 m/s, and from there it flows through the diffuser into the fan, which returns it to the atmosphere. Calculate the static and stagnation pressures at: a. The working section b. The inlet to the fan c. The exit from the fan, assuming no change in air speed across the fan. d. Calculate the power supplied by the fan to the air.
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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Transcribed Image Text:5. A wind tunnel consists of an entry contraction, a constant-area working section of area
0.5 m?, a diffuser and a fan of area 1 m?, as shown in Fig. 2. The air is pulled from the
atmosphere through the contraction into the working section where its speed is 20 m/s,
and from there it flows through the diffuser into the fan, which returns it to the
atmosphere. Calculate the static and stagnation pressures at:
a. The working section
b. The inlet to the fan
C.
The exit from the fan, assuming no change in air speed across the fan.
d. Calculate the power supplied by the fan to the air.
Fan
V = 20 m/s
Working section
Diffuser
Contraction
Figure 2
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