Abstract
In this paper it is shown that the equation of flow of liquids through beds of granular material, developed in a previous research, may be used as a basis for calculation of the rate of flow of gases through granular beds under isothermal conditions of expansion.
The equation covering the isothermal flow of gases through a granular bed is developed from an expression evolved by Unwin for the motion of a gas in a pipe, by the substitution of the equation for the flow of a liquid through a bed in place of the equation of flow of a liquid through a pipe.
The equation is verified by several experimental determinations and is shown to be in accordance with the experimental results of a number of different workers.
Examination of the equation developed shows that for beds of extremely open packing the pressure drop to maintain an assigned rate of flow is not a linear function of the depth of bed but for beds of the normal densities of packing the deviation from linearity is negligible.
Get full access to this article
View all access options for this article.