![](/images/graphics-bg.png)
Thermoacoustic Stability Boundaries in the Model Combustion Chamber with a Gas-Centered Swirl Coaxial Injector
Joint Authors
Yoon, Youngbin
Min, Yong Ho
Sohn, Chae Hoon
Source
International Journal of Aerospace Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-11-19
Country of Publication
Egypt
No. of Pages
9
Abstract EN
The stability of a combustion chamber with a gas-centered swirl coaxial injector is investigated over a wide range of operating conditions in the aspect of thermoacoustic instabilities.
First, flame shapes induced by the injector are analyzed for various recess lengths from experimental results.
The spreading angle and flame size are reduced as the recess length increases.
And, as a stability criterion, the damping factor is introduced.
The operating conditions are divided into 7 sets with 9 tests, and fuel mass flow is fixed in each set.
Stability boundaries are identified in terms of damping factor for the 63 tests by experiments without external perturbations.
The stability map for the self-excited instability is obtained and it reveals two unstable regions.
One is located at low dynamic head ratio and the other one is at high dynamic head ratio.
A stable region is found at moderate dynamic head ratios.
Relative stability is evaluated by various flow parameters over a wide range of operating conditions in the combustion chamber with a gas-centered swirl coaxial injector.
American Psychological Association (APA)
Min, Yong Ho& Sohn, Chae Hoon& Yoon, Youngbin. 2019. Thermoacoustic Stability Boundaries in the Model Combustion Chamber with a Gas-Centered Swirl Coaxial Injector. International Journal of Aerospace Engineering،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1157128
Modern Language Association (MLA)
Min, Yong Ho…[et al.]. Thermoacoustic Stability Boundaries in the Model Combustion Chamber with a Gas-Centered Swirl Coaxial Injector. International Journal of Aerospace Engineering No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1157128
American Medical Association (AMA)
Min, Yong Ho& Sohn, Chae Hoon& Yoon, Youngbin. Thermoacoustic Stability Boundaries in the Model Combustion Chamber with a Gas-Centered Swirl Coaxial Injector. International Journal of Aerospace Engineering. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1157128
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157128