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# GATE 2023 FLUID MECHANICS 19

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Question 1

If the velocity divergence at a particular point and time is 3 m/sec and the rate of change of density is 0.9 kg/m3 per sec. Then density at that point will be

Question 2

A nozzle is so shaped that the average flow velocity changes linearly from 1.5 m/s at the beginning to 15 m/s at its end in a distance of 0.375 m. The magnitude of the convective acceleration (in m/s2) at the beginning of the nozzle is _________.

Question 3

Navies-stokes equation describes the motion of

Question 4

The stream function for uniform flow past a circular cylinder of radius 'a' in polar co-ordinates is given by is the free stream velocity parallel to the horizontal axis. The velocity component in r direction (Vr) on the cylinder at 90 ° is ________.

Question 5

What is the nature of streamlines for the velocity field below? Where x and y are in m/s

Question 6

For a certain two–dimensional in compressible flow, velocity field is given by . The stream lines for this flow are given by the family of the curves.
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