Experimental Study on the Flow of an Air Jet Loom with an Air-Guide

Part 2 : A Comparison of the Air Flow Characteristics between in an Air Guide and in Various Air Tubes

Abstract

As a fundamental study on the flow in a air jet loom with an air-guide, we have investigated the flow characteristics of flow in the tubes with different diameters, and also compared with the flows in the tubes with slits.
The main results are as follows : (1) The flow in a tube can be divided into two regions by the difference of flow feature. (2) The fiow in the first region shows similar features to a free jet flow untill a jet flow from a nozzle reattaches on a tube wall and the static pressure on the tube wall is negative. (3) The other region is a downstream part of the tube and shows the characteristics of a pipe flow. The effects of the diameter, the gapdistance between a nozzle and a tube, and the slit are clarified.