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Power number : ウィキペディア英語版
Power number
: For Newton number, see also Kissing number in the sphere packing problem.
The power number ''N''p (also known as Newton number) is a commonly used dimensionless number relating the resistance force to the inertia force.
The power-number has different specifications according to the field of application. E.g., for
stirrers the power number is defined as:
: N_\mathrm = \frac}
with
*''P'': power
*''ρ'': fluid density
*''n'': rotational speed
*''D'': diameter of stirrer 〔 J Wei, J L Anderson, K B Bischoff ''Advances in Chemical Engineering, Volume 17'' Academic Press (1991) ISBN 0-12-008517-8 page 44〕
== References ==


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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