Lockhart–Martinelli parameter

The Lockhart–Martinelli parameter (\chi) is a dimensionless number used in internal two-phase flow calculations.[1] 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:


\chi = \frac{m_\ell}{m_g} \sqrt{\frac{\rho_g}{\rho_\ell}},

where

See also

References

  1. Lockhart, R.W., Martinelli, R.C.; Chem. Eng. Prog., Vol. 45. 1949, pp. 39–48
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