Proving Poiseuille's Equation for Pressure Drop

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Homework Statement



Prove that pressure drop (ΔP) of a fluid, in laminar flow, through a cylindrical tube is given by
ΔP=(8QμL)/π(r)^4
where

Q = volumetric flow rate
μ = viscosity,
L = tube length, in
R = tube radius, in

Homework Equations


please do not use dimensional analysis to prove.


The Attempt at a Solution

 
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I have decent knowledge of taylor series.
Apart from "Mechanics of Continuous Media",i have good understanding of other undergraduate physics topics as well.
I do not have enough time to go through the whole of fluid dynamics.
i want to know only 3 things in Mechanics of Continuous Media
(a) proof of stokes's law,poiseuille equation,elastic constants and their inter-relation.
please help with these topics.
 
I have decent knowledge of taylor series.
Apart from "Mechanics of Continuous Media",i have good understanding of other undergraduate physics topics as well.
I do not have enough time to go through the whole of fluid dynamics.
i want to know only 3 things in Mechanics of Continuous Media
(a) proof of stokes's law,poiseuille equation,elastic constants and their inter-relation.
please help with these topics.
 
NOw i know the proof of stokes's law,poiseuille equation.
I never believed that the proof would be such a general one(u only need to know Newton's law).
All book except one(physical fluid mechanics by d.j tritton)were providing proof after digging into 100s of pages of fluid dynamics .
thanks D.J TRITTON
thanks you as well, even for not helping me.
 
To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.

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