Question

Momentum correction factor is:
a. Always greater than or equal to 1
b. Always less than or equal to 0
c. In the range [0,1]
d. In the range [-1,1]​

Answer 1

Answer:

1.33

Explanation:

Concept:

1. The momentum correction factor (β)

For turbulent flow, β is slightly higher than one near 1.2.

For laminar, β = 1.33.

2. The Kinetic energy factor (α)

For laminar, α = 2

Momentum correction factor (β):

It is defined as the ratio of momentum of the flow per second based on actual velocity to the momentum of the flow per second based on average velocity across a section.

Kinetic energy correction factor (α):

It is defined as the ratio of kinetic energy/second based on actual velocity to the kinetic energy/second based on average velocity.

Where,

A = area,

V = average velocity,

u = local velocity at distance r.

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