Question

What is the depth of flow for maximum velocity in a circular channel section with diameter equal to 1.5m?

Answer 1

The depth of flow for maximum velocity = 0.75 meter.

Given:

A circular channel section with diameter equal to 1.5 meter.

To find:

What is the depth of flow for maximum velocity.

Concept used:

The velocity profile in the circular section is parabolic. For laminar flow

Explanation:

The velocity profile in the circular section is parabolic. For laminar flow

And velocity will be maximum at center line of the pipe.

So that the depth of flow for maximum velocity = Diameter/2

                                                                               = $\frac{1.5}{2}$ = 0.75 meter.

The depth of flow for maximum velocity = 0.75 meter.

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Answer 2

Answer:

1.215m

Explanation:

the ratio of depth to dia for max velocity in circular channel is .81

so depth =.81 x dia =.81 x 1.5 =1.215m