Numerical Investigation on Primary Atomization Mechanism of Hollow Cone Swirling Sprays
Joint Authors
Ding, Jia-Wei
Li, Guo-Xiu
Yu, Yu-Song
Li, Hong-Meng
Source
International Journal of Rotating Machinery
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-05
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The atomization process of swirling sprays in gas turbine engines has been investigated using a LES-VOF model.
With fine grid resolution, the ligament and droplet formation processes are captured in detail.
The spray structure of fully developed sprays and the flow field are observed firstly.
A central recirculation zone is generated inside the hollow cone section due to the entrainment of air by the liquid sheet and strong turbulent structures promote the breakup of ligaments.
At the exit of injector nozzle, surface instability occurs due to disturbance factors.
Axial and transverse mode instabilities produce a net-like structure ligament zone.
Finally, the generation mechanism of the droplet is analyzed.
It is found that the breakup mechanism of ligaments is located at the Raleigh capillary region.
Axial symmetry oscillation occurs due to the surface tension force and the capillary waves pinch off from the neck of the ligaments.
Secondary breakup and coalescence occur at the “droplet zone,” resulting in a wider distribution curve at the downstream area.
American Psychological Association (APA)
Ding, Jia-Wei& Li, Guo-Xiu& Yu, Yu-Song& Li, Hong-Meng. 2016. Numerical Investigation on Primary Atomization Mechanism of Hollow Cone Swirling Sprays. International Journal of Rotating Machinery،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1106999
Modern Language Association (MLA)
Ding, Jia-Wei…[et al.]. Numerical Investigation on Primary Atomization Mechanism of Hollow Cone Swirling Sprays. International Journal of Rotating Machinery No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1106999
American Medical Association (AMA)
Ding, Jia-Wei& Li, Guo-Xiu& Yu, Yu-Song& Li, Hong-Meng. Numerical Investigation on Primary Atomization Mechanism of Hollow Cone Swirling Sprays. International Journal of Rotating Machinery. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1106999
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1106999