The Stability of Flow Through Porous Screens

Abstract

In many cases of the flow through porous screens, one may consider it to be made up of a number of jets passing through the openings of the screen. These jets are separated by a series of wakes behind the solid parts of the screen. The majority of investigations on the flow through such screens have been concerned with the measurement of pressure drop and its variation with different flow conditions; it has been assumed that the pressure is discontinuous at the screen itself and that the pressure drop coefficient Δ p/ ½ ρυ 2 provides sufficient information, where Δ p is the pressure drop across the screen, ρ the density of the fluid, and υ the velocity of approach to the screen.