Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/62266
Title: | Numerical study of the three-dimensional preliminary flow field in the ring spinning triangle | Authors: | Guo, HF Lam, NYK Yan, F Yang, C Li, L |
Keywords: | Drafting inclination angle Dynamic mesh Flow characteristics Spinning triangle Top roller offset |
Issue Date: | 2016 | Publisher: | SAGE Publications | Source: | Textile research journal, 2016, v. 86, no. 16, p. 1728-1737 How to cite? | Journal: | Textile research journal | Abstract: | The spinning triangle is a critical region in ring spinning. To understand the formation principle of the triangle zone, a dynamic mesh model with SIMPLEC algorithm is employed to study airflow around the rotating front roller-pair. The effects of both the top roller offset and the drafting inclination angle are also discussed. The bubble-type vortex breakdown and vortices around two cylinders are observed. The bubble-type vortices will help the edge fibers to converge to the center. A contour line with special value is defined to describe the spinning triangle. A dynamic triangle zone is also observed with time. As the forward offset of the top roller increases, the velocities in the stream-wise (x- and y-) directions decrease and the maximum values of the skin friction deflect gradually towards the apex of the roller. However, the z-velocity for the 3 mm top roller offset is the largest and results in a good converging for fibers and, consequently, increases the yarn tension. With increasing the inclination angle, the velocities increase while both the defined triangle zones and the maximum values of the friction coefficients decrease, thus speeding up the fibers transportation. The simulation results agree well with the theory analysis and experiments of spinning. | URI: | http://hdl.handle.net/10397/62266 | ISSN: | 0040-5175 | EISSN: | 1746-7748 | DOI: | 10.1177/0040517515606349 |
Appears in Collections: | Journal/Magazine Article |
Show full item record
SCOPUSTM
Citations
1
Last Week
0
0
Last month
Citations as of Apr 13, 2018
WEB OF SCIENCETM
Citations
1
Last Week
0
0
Last month
Citations as of Apr 18, 2018
Page view(s)
40
Last Week
0
0
Last month
Citations as of Apr 16, 2018

Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.