Science, asked by alib5016, 11 months ago

the mean velocity of a laminar flow through a circular pipe of 30 cm is 15m/s. the local velocity of the flow at a radius of 25 cm is

Answers

Answered by ARHAMABDULLAH0303
1

35m/s

the mean velocity of laminar is 35m/s

Answered by nuuk
9

Answer:9.16 m/s

Explanation:

Given

v_{mean}=15 m/s

radius of circular pipe R=30 cm

velocity at r=25 cm

and we know v(r)=v_{max}\left [ 1-\left ( \frac{r}{R}\right )^2\right ]

In laminar flow \frac{v_{max}}{v_{mean}}=2

Therefore v_{max}=2\times 15=30 m/s

Thus v(r=25)=30\times \left [ 1-\left ( \frac{25}{30}\right )^2\right ]

v(r=25)=9.16 m/s

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