power, number, newton, number, also, kissing, number, sphere, packing, problem, arithmetic, algebra, exponentiation, power, number, also, known, newton, number, commonly, used, dimensionless, number, relating, resistance, force, inertia, force, power, number, . For Newton number see also Kissing number in the sphere packing problem For use in arithmetic and algebra see Exponentiation 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 1 Np Prn3D5 displaystyle N mathrm p frac P rho n 3 D 5 with P power r fluid density n rotational speed in revolutions per second D diameter of stirrerReferences edit Seinfeld John H 1991 Wei J Anderson J L Bischoff K B eds Advances in Chemical Engineering Academic Press p 44 ISBN 978 0 08 056564 4 nbsp This fluid dynamics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Power number amp oldid 1149926697, wikipedia, wiki, book, books, library,