Relative volume occupied by Phase with respect to gross volume of Multi-phase fluid sample:

(1)	$\begin{array}{l}\displaystyle s_\alpha = \frac{V_\alpha}{V}\end{array}$

where

$\begin{array}{l}V_\alpha\end{array}$	volume occupied by $\begin{array}{l}\alpha\end{array}$ -phase
$\begin{array}{l}V=\sum_\alpha V_\alpha\end{array}$	total volume of Multiphase Fluid sample which is a sum of all phase volumes

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See also