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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.
:\mathrm = - }\frac
* ''γ'': surface tension, (SI units: N/m);
* ''L'': characteristic length, (SI units: m);
* \alpha: thermal diffusivity, (SI units: m2/s);
* ''η'': dynamic viscosity, (SI units: kg/(s·m));
* ∆''T'': temperature difference, (SI units: K).
==See also==

*Marangoni effect


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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