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Modelling of the Parameters of Air-Flow in Pneumatic Nozzles for Linking Staple and Filament Yarns. Part I. Determining of the Volume Flow and Local Speeds of Air-Flow

Research and development

Authors:

• Dopierała Halina
  Poland, Łódź, Textile Research Institute
• Radom Czesław (j/w)
• Swaczyna Paweł (j/w)
• Zawadzki Leszek
  Poland, Łódź, Technical University of Łódź, Faculty of Material Technologies and Textile Design, Department of Textile Machines Mechanics

Full text

Abstract: This article presents the results of different solutions of pneumatic nozzles for linking yarns manufactured from staple and filament fibres. The research focused on determining the influence of the construction design of pneumatic nozzles on forming the stream of outflowing air. The investigations included an analysis of the construction design of interlacing nozzles with regard to their internal structure (divided into two groups depending on structural features: symmetrical and asymmetrical), an analysis of air-flow parameters, such as the local speeds of the air stream flowing out of the nozzle, measured at different points of the outlet planes of the yarn interlacing duct, the volume of air-flow, which were measured at specially prepared experimental stands, and estimation of the methods applied. The article also presents a hypothesis of air-flow in symmetrical nozzles, elaborated on the basis of experimental results.

Tags: pneumatic nozzle, air-flow parameters, pneumatic linking, filament yarns..

Citation: Dopierała H., Radom C., Swaczyna P., Zawadzki L.; Modelling of the Parameters of Air-Flow in Different Construction Designs of Pneumatic Nozzles for Linking Staple and Filament Yarns. Part I. Determining of the Volume Flow and Local Speeds of Air-Flow. FIBRES & TEXTILES in Eastern Europe 2011, Vol. 19, No. 3 (86) pp. 30-36.

Published on issue no 3 (86) / 2011, pages 30–36.

"Fibres & Textiles in Eastern Europe" is inserted on the "ISI Master Journal List" of the Institute for Scientific Information, Philadelphia, USA (for the year 2010 has an Impact Factor of 0.629) and is indexed in Research Alert, SCI Expanded (Sci Search and Web of Science), the Materials Science Citation Index, Current Contents/Engineering, Computing & Technology; as well as by the Textile Institute, Manchester, in the Information Service; and in Toga FIZ Technik; Rapra Technology Ltd.; Elsevier Geo Abstracts; Textiles Eastern Europe - World Textile Publications; Applied Mechanics Review; Chemical Abstracts Service; Referativny hurnal; and by the European Textile Network.

The content of "Fibres & Textiles in Eastern Europe" is available by free open access on the website http://www.fibtex.lodz.pl, starting from issue No 3/2002.