A Calculation of The.viscous Force Exerted by a Flowing Fluid on a Dense Swarm of Particles
نویسنده
چکیده
A calculation is given of the viscous force, exerted by a flowing fluid o11 a dense swarm of particles. The model underlying these calculations is tha t of a spherical particle embedded in a porous mass. The flow through this porous mass is decribed by a modification of D a r c y 's equation. Such a modification was necessa'ry in order to obtain consistent boundary conditions. A relation between permeabil i ty and particle size and density is obtained. Our results are compared with an experimental relation due to C a r m a n .
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