Skin Friction Coefficient on a Yarn Package Surface in Ring Spinning

Author:

Tang Zheng-Xue1,Xungai Wang 2,Fraser Barrie3

Affiliation:

1. University, Geelong, Victoria 3217, Australia

2. School of Engineering and Technology, Deakin University, Geelong, Victoria 3217, Australia

3. University of Sydney, Sydney, NSW 2006, Australia

Abstract

The skin friction coefficient on the surface of a rotating yarn package affects the power required to drive the package. This paper examines the relationship between the skin friction coefficient on the package surface and its diameter and rotating speed, based on the fundamentals of aerodynamics and the experimental results of power consumption. Skin friction coefficients on the surfaces of an airplane, car top, and yarn package are discussed. The results indicate that the skin friction coefficient on the package surface without hairiness depends on the package diameter and spindle speed only. The skin friction coefficient on the yarn package surface is about three times that on the top surface of a car, and is about twenty times that on an airplane surface. The power consumed to overcome skin friction drag is more than that consumed to drive the spindle if the spindle speed is very slow. However, the situation reverses when the spindle speed is fast.

Publisher

SAGE Publications

Subject

Polymers and Plastics,Chemical Engineering (miscellaneous)

Reference20 articles.

1. Anderson, J.D. "Fundamentals of Aerodynamics," 3rd ed. McGraw-Hill, Inc, NJ, 2001, pp. 63-67. 263, 719-821.

2. Barr, A.E.D. , and Catling, H., The Principles and Theory of Ring Spinning, in "Manual of Cotton Spinning," F. Charnley and P. W. Harrison, Eds., vol. V, The Textile Institute and Butterworth & Co. Ltd. , U.K., 1965, p. 41.

3. Effect of bluff body wakes on skin friction and surface heat transfer in a turbulent boundary layer

4. The dynamic response of a ballooning yarn: theory and experiment

5. New developments and applications of skin-friction measuring techniques

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