A qualitative analysis of air flow in air-jet filling insertion is given. The air flow in single nozzle air-jet insertion is unsteady and turbulent, and can be compressible or incompressible depending on the velocity. Dynamic air velocity measurements showed that the air velocity depends on two variables—distance and time. It increases with time (distance constant) and decreases with distance from the nozzle.
Get full access to this article
View all access options for this article.
References
1.
Adanur, S., Air-Jet Filling Insertion: Velocity Measurement and Influence of Yam Structure, Master's thesis, North Carolina State University, 1985.
2.
Adanur, S., Dynamic Analysis of Single Nozzle Air-Jet Filling Insertion, Doctoral thesis , North Carolina State University, 1989 .
3.
Adanur, S., and Mohamed, M.H., Weft Insertion on Air-Jet Looms: Velocity Measurement and Influence of Yam Structure, Part I: Experimental System and Computer Interface, J. Textile Inst.79 (2), 297-315 (1988).
4.
Duxbury, V., Lord, P., and Vaswani, T., A Study of Some Factors Involved in Pneumatic Weft Propulsion, J. Textile Inst.50 (10), 558-573 (1959).
5.
Lu, P.-C., "Introduction to the Mechanics of Viscous Fluids," McGraw-Hill, NY, 1977.
6.
Lyubovitskii, V.P., and Akaev, A.A., The Yam Dynamics in the Non-Stationary Air Flow of the P-105 Loom, Tech. Textile Ind. USSR, 6 (1970).
7.
Reynolds, A.J., "Turbulent Flows in Engineering," John Wiley & Sons, NY, 1974.
8.
Salama, M.M., Mechanics of Air-Jet Filling Insertion, Doctoral thesis, North Carolina State University, 1984.
9.
Salama, M., and Mohamed, M.H., Mechanics of a Single Nozzle Air-Jet Filling Insertion System, Part II: Velocity Distribution and Design of the Air Guide System, Textile Res. J.56 (12), 721-726 (1986).
10.
SAS/GRAPH, User's Guide, version 5 ed., SAS Institute Inc., 1985.
