Multiphase Fluid is a Fluid Mixture consisting of phases, each occupying its own space volume.
Each phase of the Multiphase Fluid is represented either by a pure substance or by a Fluid Mixture (see Multiphase Fluid vs Fluid Mixture.
It may also happen that a Multiphase Fluid consists of one pure substance and as such is not a Fluid Mixture (example is liquid water and its vapour staying in equlibrium).
Fluid Mixture is a sum of Fluid Components, which are pure chemical substances.
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x_i = \frac{\nu_i}{\nu} = \frac{N_i}{N} |
where
| amount of substance of the | ||||||||
| total amount of substance in the mixture | ||||||||
| Avogadro constant | ||||||||
| amount of molecules/atoms in the | ||||||||
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In case of Multiphase Fluid one often need to assess the voume volume fraction of each phase:
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s_\alpha = \frac{V_\alpha}{V} |
where
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| volume occupied by | ||||||
| total volume of Multiphase Fluid sample which is a sum of all phase |
volumes |
The model is based on Equation of State (EOS) and inter-phase Thermodynamic equilibrium.
See Also
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Natural Science / Chemistry / Chemical Substance / Mixture / Fluid Mixture
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