Marangoni number
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The Marangoni number (Mg) is a dimensionless number named after Italian scientist Carlo Marangoni. The Marangoni number may be regarded as proportional to (thermal-) surface tension forces divided by viscous forces. It is - for example - applicable to propellant behaviour calculations in spacecraft tanks or bubble and foam research.
- σ: surface tension, (SI units :N/m)
- L: characteristic length, (SI units :m)
- α: thermal diffusivity, (SI units :m² / s)
- η - dynamic viscosity, (SI units :kg /(s·m)),
- ΔT: temperature difference
[edit] See also
| Dimensionless numbers in fluid dynamics |
|---|
| Archimedes • Bagnold • Bond • Brinkman • Capillary • Damköhler • Deborah • Eckert • Ekman • Euler • Froude • Galilei • Grashof • Hagen • Knudsen • Laplace • Lewis • Mach • Marangoni • Nusselt • Ohnesorge • Péclet • Prandtl • Rayleigh • Reynolds • Richardson • Rossby • Schmidt • Sherwood • Stanton • Stokes • Strouhal • Weber • Weissenberg • Womersley |
