Eötvös number

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In fluid dynamics the Eötvös number (Eo) is a dimensionless number named after Hungarian physicist Loránd Eötvös (1848-1919).

Together with Morton number it can be used to characterize the shape of bubbles or drops moving in a surrounding fluid. Eötvös number may be regarded as proportional to buoyancy force divided by surface tension force.

\mathrm{Eo}=\frac{\Delta\rho \,g \,L^2}{\sigma}

[edit] See also

  • Bond number - The Eötvös number is equal to the bond number. Usage of Eötvös number in favor of Bond number is seen in Europe.

[edit] References

R. Clift, J.R. Grace, M.E. Weber, Bubbles Drops and Particles, Academic Press New York, 1979, p.26

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Dimensionless numbers in fluid dynamics
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