NDLI: Computational Investigation of Swirling Supersonic Jets Generated Through a Nozzle-Twisted Lance

Content Provider	Springer Nature Link
Author	Li, Mingming Li, Qiang Zou, Zongshu An, Xizhong
Copyright Year	2016
Abstract	The dynamic characteristics of supersonic swirling jets generated through a nozzle-twisted lance are numerically studied. The essential features of the swirling jets are identified by defining a deviation angle. The effects of nozzle twist angle (NTA) on swirling flow intensity, coalescence characteristics, and dynamic parameter distributions of the jets are discussed. The rotational flow characteristics are revealed. The results show that the jets from the nozzle-twisted lance are imparted to a circumferential rotating movement around the lance axis, and such swirling flow is enhanced by increasing NTA. The enhanced swirling flow causes weaker coalescence of the jets, faster attenuations of the axial velocity, and higher heat transfer rate between the jets and surroundings. The supersonic core length, however, is found to be less sensitive to the swirling flow intensity. The radial spreading of the jets, changing non-monotonically with NTA, arrives at its maximum at 5 deg of NTA. Furthermore, the swirling flow induces a considerable tangential velocity component, and as a result, a holistic and effective horizontal swirling flow field develops. The y-vorticity distribution range and the corresponding magnitude turn larger with increasing NTA, which promote the vortex motion of the local fluid element and thus intensify the local mixing.
Starting Page	713
Ending Page	725
Page Count	13
File Format	PDF
ISSN	10735615
Journal	Metallurgical and Materials Transactions B
Volume Number	48
Issue Number	1
e-ISSN	15431916
Language	English
Publisher	Springer US
Publisher Date	2016-11-14
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials Characterization and Evaluation of Materials Structural Materials Surfaces and Interfaces, Thin Films Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Mechanics of Materials Condensed Matter Physics

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