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Chemical Engineering Fluid Mechanics, Third Edition, 3rd Edition by Raj P. Chhabra, Ron Darby

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14

Flow in Porous Media

If your experiment needs statistics, you ought to have done a better experiment.”

—Ernest Rutherford, 1871–1937, Physicist

I.    DESCRIPTION OF POROUS MEDIA

By a “porous medium” is meant a solid, or a collection of solid particles, with sufficient open space in or around the particles to enable a fluid to pass through or around them. There are various conceptual ways of describing a porous medium.

One concept is a continuous solid body with pores in it, such as a brick or a block of sandstone. Such a medium is referred to as consolidated, and the pores may be unconnected (“closed cell” or impermeable) or connected (“open cell” or permeable). Another concept is a collection (or “pile”) of solid particles in a packed ...

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