Power number

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For Newton number, see also Kissing number in the sphere packing problem

The power number Np (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{p}} = {P\over \rho n^{3} d^{5}}

with

References[edit]

  1. ^ J Wei, J L Anderson, K B Bischoff Advances in Chemical Engineering, Volume 17 Academic Press (1991) ISBN 0-12-008517-8 page 44

See also[edit]