10—Air Flow through Plugs of Textile Fibres Part 1—General Flow Relations

Abstract

A study is made of the various factors governing the flow of air through plugs of textile fibres. The magnitude of the porosity effect differs from that predicted by various hydrodynamical theories. The nature of the fibre surface is also found to affect the flow. An empirical relation between flow and the various plug characteristics is developed, but where specific fibre surface is to be predicted accurately from permeability measurements, the investigation indicates the need for empirical calibration of flow apparatus under conditions of use.