- #1

Ali Durrani

- 57

- 5

Hello guys!

can i get the derivation for this equation ?

can i get the derivation for this equation ?

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- Thread starter Ali Durrani
- Start date

- #1

Ali Durrani

- 57

- 5

Hello guys!

can i get the derivation for this equation ?

can i get the derivation for this equation ?

- #2

Chestermiller

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- #3

Ali Durrani

- 57

- 5

yes sir as you said the 1st term should be the partial derivative with respect to time but i don't know why our teacher in the fluid class wrote the equation in this form, and it was not a mistake because he used it again and again, can you explain the logic behind it as he is a very senior teacher and he wouldn't make such a silly mistake

- #4

Chestermiller

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I stand by what I said. I can't account for what your teacher does. All I can do is confidence in what I am saying.yes sir as you said the 1st term should be the partial derivative with respect to time but i don't know why our teacher in the fluid class wrote the equation in this form, and it was not a mistake because he used it again and again, can you explain the logic behind it as he is a very senior teacher and he wouldn't make such a silly mistake

My questions for you are:

1. How does his equation account for the time rate of accumulation of x momentum within the control volume?

2. When he writes the corresponding equation for the conservation of mass within the control volume, does his equation have a partial derivative with respect to x or a partial derivative with respect to t?

- #5

Chestermiller

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1. What are the units of the term as your teacher has written it?

2. Are those units of force?

- #6

Chestermiller

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So.... What are your answers to my questions?

- #7

Ali Durrani

- 57

- 5

- #8

Chestermiller

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No problem.

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