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Friday, 24 August 2018

KINETIC ENERGY CORRECTION FACTOR AND MOMENTUM CORRECTION FACTOR

We were discussing the difference between Notches and Weirsdischarge over a triangular notch or weirexpression for discharge over a rectangular notch or weiradvantage 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. 

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. 

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) 

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