Momentum Equation Homework: Questions & Solutions

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Homework Statement


The questions are in the attachment. please help!

Homework Equations


M term is the diffusion.


The Attempt at a Solution


for the right hand side terms, it is just adding another velocity term, however on the left hand side term, i dun understand y there will be a 1/2 since momentum equation is just substantial derivative of velocity.
 

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oxxiissiixxo said:
… on the left hand side term, i dun understand y there will be a 1/2 since momentum equation is just substantial derivative of velocity.

Hi oxxiissiixxo! :smile:

Because D(vivi)/Dt = … ? :wink:
 

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