Phase Fractions
This node is available when Newtonian is selected as the Fluid model for the Pipe Flow interface and then Gas-Liquid, friction factor multiplier or Gas-Liquid, effective Reynolds number are also chosen.
Use the Phase Fractions node to define the gas fraction as area averaged void fraction or a quality mass fraction.
Gas Fraction
Select a Gas fraction specification — Area averaged void fraction (volume fraction) or Quality (mass fraction).
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For Area averaged void fraction (volume fraction) enter an Area averaged void fraction φG (dimensionless). The default is 0.
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For Quality (mass fraction) enter a Quality ωG (dimensionless). The default is 0.