The analysis of the airflow from sub-nozzles that have different emitting cross-sections is described. At first, tests were carried out outside the profiled reed and comparison between nozzles was made in terms of air velocity distribution, jet spreading, consumption and exerted drag force. Subsequently, in order to analyze the interaction between the jet emitted by a sub-nozzle and the loom profiled reed, some velocity measurements were repeated inside the weft passage, at various distances from the nozzle exit. Finally, a high-speed camera was used to visualize the weft yarn crossing the weft passage.
Ishida M. and Okajima A.Flow characteristics of main nozzle in an air-jet loom. Textile Res J1994; 64: 10-20.
3.
Göktepe O. and Bozkan O.Study on reduction of air consumption on air-jet weaving machines. Textile Res J2008; 78: 816-824.
4.
Shintani R. and Okajima A.Air flow through a weft passage of profile reed in air jet looms. J Textile Mach Soc Japan2001; 54: 56-63.
5.
Belforte G. , Costamagna A., Mattiazzo G., Testore F. and Visconte C.Flow field characterization of air-jet loom auxiliary nozzles. AUTEX 2008 - World Textile Conference. Biella, 2008.
6.
ISO 6358.Pneumatic Fluid Power - Components Using Compressible Fluids - Determination of Flow-rate Characteristics, 1989.
