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Marangoni number : ウィキペディア英語版 | Marangoni number
The Marangoni number (Ma) 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 bubble and foam research or calculations of cryogenic spacecraft propellant behaviour. : * ''γ'': surface tension, (SI units: N/m); * ''L'': characteristic length, (SI units: m); * : thermal diffusivity, (SI units: m2/s); * ''η'': dynamic viscosity, (SI units: kg/(s·m)); * ∆''T'': temperature difference, (SI units: K). ==See also==
*Marangoni effect
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