Mechanical Engineering > GATE 2023 > Compressible Flow
Consider an isentropic flow of air (ratio of specific heats = 1.4) through a duct as shown in the figure.
The variations in the flow across the cross-section are negligible. The flow conditions at Location 1 are given as follows:
P1=100 kPa, ρ1=1.2 kg/m3, u1=400 m/s
The duct cross-sectional area at Location 2 is given by A2=2A1, where A1 denotes the duct cross-sectional area at Location 1. Which one of the given statements about the velocity u2 and pressure P2 at Location 2 is TRUE?
A
u2<u1, P2<P1
B
u2< u1, P2>P1
C
u2> u1, P2<P1
D
u2> u1, P2>P1

Correct : b

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isentropic flow air duct cross section area GATE mechanical engineering 2023 fluid mechanics gate velocity pressure isentropic flow mechanical engineering gate air flow properties duct flow analysis

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