We were discussing the difference
between Notches and Weirs, discharge
over a triangular notch or weir, expression
for discharge over a rectangular notch or weir, advantage
of triangular notch or weir over rectangular notch or weir, discharge
over a trapezoidal notch and also discharge overa stepped notch in the subject of fluid
mechanics, in our recent posts.

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Now we will go ahead to find out the
kinetic energy correction factor and momentum correction factor, in the subject
of fluid mechanics, with the help of this post.

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**Kinetic energy correction factor **

Kinetic energy correction factor is
basically defined as the ratio of kinetic energy of the flow per second based
on actual velocity across a section to the kinetic energy of the flow per
second based on average velocity across the same section.

Kinetic energy correction factor will be
displayed by the symbol α and will be written mathematically as mentioned here.

**Kinetic energy correction factor, α**=

(K.E. per second based on actual
velocity) / (K.E. per second based on average velocity)

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**Momentum correction factor **

Momentum correction factor is basically
defined as the ratio of momentum of the flow per second based on actual
velocity across a section to the momentum of the flow per second based on
average velocity across the same section.

Momentum correction factor will be
displayed by the symbol β and will be written mathematically as mentioned here.

**Momentum correction factor, β**=

(Momentum per second based on actual
velocity) / (Momentum per second based on average velocity)

Now we will go ahead to start a new
topic in the subject of fluid mechanics i.e. Power absorbed in viscous flow.

Do you have any suggestions? Please
write in comment box.

### Reference:

Fluid mechanics, By R. K.
Bansal

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