Lockhart-Martinelli parameter
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The Lockhart-Martinelli parameter is a dimensionless number used in internal two phase flow calculations. It expresses the liquid fraction of a flowing fluid. Its main application is in two-phase pressure drop and boiling/condensing heat transfer calculations.
It is defined as:
where:
- ml is the liquid phase mass flowrate
- mg is the gas phase mass flowrate
- ρg is the gas density
- ρl is the liquid density
