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shanrana
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Fluid Mechanics Help

07/14/2012 2:39 AM

In laminar flow through a pipe of radius R, the fraction of total fluid flow through a circular cross section of radius R/2 centered at the pipe axis is ???

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lyn
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#1

Re: Fluid Mechanics help

07/14/2012 2:43 AM

On page 246 in the text book. Do your own homework.

NO HOMEWORK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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shanrana
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#2
In reply to #1

Re: Fluid Mechanics help

07/14/2012 3:46 AM

If u know the answer then u definitely gave, but u dont have the answer thats why u use this "homework" as a shield to save from embarrassment.. if a have dare to prove that u know the answer, then give it now, i willl not ask these type of question again.

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lyn
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#3
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Re: Fluid Mechanics help

07/14/2012 9:36 AM

I must say that U are better at copying questions directly from the textbook than you are at composing and conveying independent thoughts.

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shanrana
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#4
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Re: Fluid Mechanics help

07/14/2012 10:53 AM

Thanks you are a good person

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shanrana
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#5
In reply to #1

Re: Fluid Mechanics help

07/14/2012 10:55 AM

I have tried a lot please help me out i am desperate to find the solution .... or give me some hint

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lyn
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#6
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Re: Fluid Mechanics help

07/14/2012 11:56 AM
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#7

Re: Fluid Mechanics Help

07/15/2012 4:44 AM

I forget what the shape of the cross-sectional velocity profile is; parabola? Whatever the shape, the full flow is represented by the solid of revolution of the curve. V = ∫0R 2π f(x) dx. The flow within R/2 is ∫0R/2 2π f(x) dx. [I think, but pretty rusty.]

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#8

Re: Fluid Mechanics Help

07/19/2012 9:45 AM

Hmmmm I have the answer right here straight out of my Fluid Dynamics textbook.

But since you're obviously a student that has not properly studied then I will not provide said answer.

Ever heard of "independent study", or doing a Google Search? Go back to your textbook and re-study this issue, okay?

And yes, determining the answer to your question does indeed involve calculus.

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