Numerical simulation of three-dimensional flow field in compact spinning with Hollow Roller: Effect of roller surface structure
International Journal of Clothing Science and Technology
ISSN: 0955-6222
Article publication date: 27 May 2014
Abstract
Purpose
Condensing roller is the most key parts of compact spinning system. Hollow Roller is one of the most important kinds of condensing roller, the surface structure of which influences the flow field in condensing zone directly and affects the qualities of spun yarn. The purpose of this paper is to study the effect of Hollow Roller surface structure on flow field in condensing zone is investigated by using Fluent Software.
Design/methodology/approach
In this paper, the effect of Hollow Roller surface structure on flow field in condensing zone is investigated by using Fluent Software. The numerical simulations of the three-dimensional flow field in Hollow Roller compact spinning with two different kinds of roller surface structure, round hole structure and strip groove structure, are given according to the three-dimensional physical model of condensing zone. The flow velocity and static pressure distributions in condensing zone are given.
Findings
It is shown that the flow velocity streamline distribution is denser with strip groove structure than that of round hole structure, especially on the center line of strand, and flow velocity value is also larger in both Y-Z and X-Y cross-sections, and in X-Z cross-section shows the embracing inlet airflow, which is benefit for fiber condensing directly and improving negative pressure use efficiency. Furthermore, the simulations with three strip groove widths 0.4, 0.8 and 1.2 mm are given. The theatrical results obtained are illustrated by experiments.
Originality/value
In this paper, the effect of Hollow Roller surface structure on flow field in condensing zone is investigated by using Fluent Software in detail. A more accurate three-dimensional physical model of condensing zone is given. A new kind of strip groove structure of Hollow Roller is proposed. The theatrical results obtained are illustrated by experiments, and lay a foundation for practical Hollow Roller design.
Keywords
Acknowledgements
This work was supported by the National Natural Science Foundation of P.R. China under Grant No. 11102072, the Natural Science Foundation of Jiangsu Province under Grant No. BK2012254, prospective industry-university-research project of Jiangsu Province (BY2011117, BY2012065) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
Citation
Liu, X. and Su, X. (2014), "Numerical simulation of three-dimensional flow field in compact spinning with Hollow Roller: Effect of roller surface structure", International Journal of Clothing Science and Technology, Vol. 26 No. 2, pp. 131-144. https://doi.org/10.1108/IJCST-11-2012-0073
Publisher
:Emerald Group Publishing Limited
Copyright © 2014, Emerald Group Publishing Limited