Air Porosity of Open-Weave Fabrics* Part I: Metallic Meshes

A method is proposed which has been experimentally verified for analyzing porosity‡ data in terms of two dimensionless parameters—the discharge coefficient and Reynolds number—char— acterizing the flow through interyarn pores of a metallic fabric. It is experimentally shown that porosity data for wire screens ranging in texture from 8 to 120 wires per in. and in porosities from 30 to 680 ft. 3 /ft. 2 , min. can be plotted within rather narrow limits as a single line relating the two dimensionless flow coefficients.