Morton number

The Morton number (Mo) is a dimensionless parameter of fluid mechanics. It is particularly useful for the characterization of the dispersed two-phase flow of importance (for example, a gas bubble or a drop ). The Morton number depends only on the physical characteristics of the dispersed ( internal ) and continuous ( outer, surrounding ) phase. It measures the relative importance of viscous forces to the surface tension. Depending on the Morton number and the Eötvös number, the shape and the rising / falling velocity of the bubble / drop characterize the gravitational field.

Alternatively, the Morton number of the key figures Eötvös number ( Eo ) capillary number (Ca) and Reynolds number (Re ) can be calculated.

The individual symbols stand for the following sizes:

  • - Acceleration of gravity, ( in SI units: m/s2)
  • - Difference in density of the two phases ( in SI units: kg / m 3 )
  • - Density of the continuous phase ( in SI units: kg / m3) )
  • - Dynamic viscosity of the continuous phase ( in SI units: kg / (s · m))
  • - Interfacial tension ( in SI units: J/m2 = N / m)
  • Code ( Fluid Mechanics )
582931
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