Poiseuille's Velocity Equation for Compressible Fluids formula |
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| \( v \;=\; \dfrac{ r^2 }{ 16 \cdot \eta \cdot l } \cdot \dfrac{ p_1^2 - p_2^2 }{ p_1 } \) | ||
| Symbol | English | Metric |
| \( v \) = velocity of fluid | \(ft\;/\;sec\) | \(m\;/\;s\) |
| \( r \) = radius of tube | \(in\) | \(mm\) |
| \( \eta \) (Greek symbol eta) = viscosity of fluid | \(lbf - sec\;/\;ft^2\) | \(Pa - s \) |
| \( l \) = length of tube | \(ft\) | \(m\) |
| \( p_1 \) = input pressure | \(lbf\;/\;in^2\) | \(Pa\) |
| \( p_2 \) = output pressure | \(lbf\;/\;in^2\) | \(Pa\) |
