Question

In: Civil Engineering

Air is flowing in a 1.5 m2 wind tunnel at 200 m/s at a pressure of...

Air is flowing in a 1.5 m2 wind tunnel at 200 m/s at a pressure of 250kPa, and temperature of 20°C at the entrance. Calculate:

(i) Mach number

(ii) Total Temperature

(iii) Total Pressure

(iv) Mass flow rate of air.

Solutions

Expert Solution

i) Mach number- It is the ratio of local flow velocity to speed of sound in given number.

theredore, M(mach number)=v/c

M=200/340 ; c= velocity of sound (at 20 degrees)= 340m/s

M=0.588

#answers of question ii), iii) and iv) are given in following images:

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P.S> If you liked my answer then please give me an upvote. Thank you in advance :)

Ally Wells answered 3 months ago
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