[방적] Study on the Principle of Yarn Formation of Murata Vortex Spinning Using Numerical Simulation 출판일 : 2009.09.01 저자 : Zeguang Pei, Chongwen Yu 서지사항 : Textile Research Journal, Volume 79, Issue 14, 1274 페이지 등록일 : 2011.05.23 I 조회수 : 68 작성자 : admin |
In Murata vortex spinning (MVS), the principle of yarn formation is closely related to the flow
field inside the nozzle. This paper presents a numerical simulation of the flow
characteristics inside the nozzle of the MVS machine. A three-dimensional grid and the
realizable k-ε turbulence model are used in this simulation. The numerical results of
pressure distribution and velocity vectors inside the nozzle are shown. A streamline starting
from the nozzle inlet is also acquired. Based on the simulation, the principle of yarn
formation of MVS is discussed. It is shown that a negative pressure zone exists in the
center of the twisting chamber. The collision between the air currents entering the twisting
chamber through the nozzle inlet and the yarn passage of the hollow spindle occurs in the
vicinity of the spindle inlet, resulting in a reverse flow and a vortex. The disturbance of the
flow helps to separate fibers. In addition, the simulation results have well supported the
principle of yarn formation of MVS claimed by the spinner makers.
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