[사] Simulating the Flow Dynamics in Hydroentangling Nozzles: Effect of Cone Angle and Nozzle Aspect Ratio 출판일 : 2003.08.01 저자 : H. Vahedi Tafreshi, B. Pourdeyhimi 서지사항 : Textile Research Journal, Volume 73, No 8(2003), 700-704페이지 등록일 : 2012.05.08 I 조회수 : 164 작성자 : admin |
Flow behavior in various nozzle shapes from the hydroentangling cone-capillary family is
modeled in this paper. The work studies the effects of cone angle and nozzle aspect ratio
(the ratio of the capillary section to its diameter) on water-jet formation. In particular, two
sets of nozzles are considered. The first set consists of nozzles that have an aspect ratio
of one and cone angles of 19, 15, 11, 7, and 3°, respectively. The nozzles in the second set
have their inlet and outlet diameters fixed, but their aspect ratios vary from 1 to 6. The results
from a two-phase axisymmetric steady-state model of turbulent nozzle flow reveal that
decreasing the cone angle or increasing the nozzle aspect ratio does not affect the
hydroentangling water-jet characteristics. The computational scheme is validated by
comparing part of the results with the available experimental data in the literature.
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