Momentum flux distribution of flow through an annulus

Input(s)

$\mathbf{p}_{\mathbf{o}}$: Pressure at Initial Point $(\mathrm{Pa})$

$\mathbf{p}_{\mathbf{L}}$: Pressure at Point $\mathrm{L}(\mathrm{Pa})$

R : Radius $(\mathrm{m})$

L: Length $(\mathrm{m})$

r: Cylindrical Shell of Thickness (m)

K: Ratio of Inner Pipe's Radius to Outer Pipe's Radius (fraction) $\left(\mathrm{m}^{2} \mathrm{~kg} \mathrm{~s}^{-2} \mathrm{~K}^{-1}\right.$ )

Output(s)

$\tau_{\text {rz }}$: Momentum Flux Distribution $(\mathrm{Pa})$

Formula(s)

Reference(s)

Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley & Sons, Chapter: 2, Page: 55.