热科学学报（英文版）2007，Vol.16Issue(2)：159-163,5.
A Study of the Gas Flow through Air Jet Loom
A Study of the Gas Flow through Air Jet Loom
摘要
Abstract
Air jet loom, as one of the shuttleless looms, transports a yarn into warps using viscosity and kinetic energy of an air jet. Performance of this picking system depends on the ability of instantaneous inhalation/exhaust, configuration of nozzle, operation characteristics of a check valve, etc. In the recent past, many studies have been reported on the air jet discharged from a nozzle exit, but studies for understanding the flow field characteristics associated with shear layer and shock wave/boundary layer interaction in the nozzle were not conducted enough. In this paper, a computational study was performed to explain the flow field in the air jet nozzle with an acceleration tube and validated with previous experimental data available. The results obtained from the computational study show that, in the supersonic flow regime, the flow field depends significantly on the length of acceleration tube. As nozzle pressure ratio increases, drag force acting on the string also increases. For a longer acceleration tube, the total pressure loss is large, owing to the frictional loss.关键词
compressible flow/nozzle/shear layer/shock wave/air jet loom/shuttleless loomKey words
compressible flow/nozzle/shear layer/shock wave/air jet loom/shuttleless loom分类
数理科学引用本文复制引用
Heuy-Dong Kim,Chae-Min Lim,Ho-Joon Lee,Doo-Hwan Chun..A Study of the Gas Flow through Air Jet Loom[J].热科学学报（英文版）,2007,16(2):159-163,5.基金项目
This work supported by grant No.10024347 from the Basic Technique Research Program of Regional Industrial Technique Development Business. （）
