Aspect ratio object/duct

Symbol
$G_{od}$
Formulae
$\frac{D_{di}}{D_{o}}$single object
$\frac{D_{di}}{2 D_{o}}$two objects touching
$\frac{0.465116279069767 D_{di}}{D_{o}}$three objects in trefoil
Related
$D_{di}$
$D_{o}$