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Laplace number : ウィキペディア英語版
Laplace number

The Laplace number (La), also known as the Suratman number (Su), is a dimensionless number used in the characterization of free surface fluid dynamics. It represents a ratio of surface tension to the momentum-transport (especially dissipation) inside a fluid.
It is defined as follows:
:\mathrm = \mathrm = \frac
where:
* σ = surface tension
* ρ = density
* L = length
* μ = liquid viscosity
Laplace number is related to Reynolds number (Re) and Weber number (We) in the following way:
:\mathrm = \frac{\mathrm{We}}
==See also==

* Ohnesorge number - There is an inverse relationship, \mathrm = \mathrm^, between the Laplace number and the Ohnesorge number.
Category:Dimensionless numbers of fluid mechanics
Category:Fluid dynamics

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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