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).
Fluid Mixture is a sum of Fluid Components, which are pure chemical substances.
Fluid Mixture can stay as a single phase with Fluid Components sharing the same volume.
Under specific temperature and pressure conditions Fluid Mixture can develop few phases, each occupying its own space volume.
The Fluid Components of each phase are sharing the same space volume.
The primary measure of Fluid Mixture Composition is mole fractions of its Fluid Components:
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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 volume fraction of each phase:
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s_\alpha = \frac{V_\alpha}{V} |
where
| volume occupied by | ||||||||
| total volume of Multiphase Fluid sample which is a sum of all phase volumes |
See Also
Natural Science / Chemistry / Chemical Substance / Mixture / Fluid Mixture
Natural Science / Physics / Thermodynamics / Thermodynamic system / Phase / Multiphase Fluid