All Issue

2019 Vol.24, Issue 1 Preview Page

Research Article

A Study on Factors Affecting Combustion Characteristics of GCSC Injector

동축형 분사기의 연소 특성에 영향을 주는 인자에 관한 연구

Yuangang Wang1
,
Jinwoo Son1
,
Chae Hoon Sohn1*
왕 위엔강1
,
손 진우1
,
손 채훈1*
1Department of Mechanical Engineering, Sejong University, Korea
1세종대학교 기계공학과
* Corresponding Author
30 March 2019. pp. 32-38
PDF XML Citation
Abstract

Factors affecting the combustion characteristics of gas-centered swirl coaxial (GCSC) injectors are investigated numerically and experimentally. The factors are fuel volume flow rate (Qf), momentum flux ratio (MFR) and oxidizer/fuel (O/F) ratio. Firstly, the flame pattern becomes asymmetric as the fuel volume flow rate increases with a fixed momentum flux ratio. Then, the suitable fuel volume flow rate is selected according to the results. Next, the momentum flux ratio is increased by increasing the oxidizer volume flow rate (Qo) with a fixed fuel volume flow rate. Results show that the spreading angle decreases as momentum flux ratio increases, which agrees with our previous results. Finally, in order to check effects of oxidizer/fuel ratio, the Qf, Qo, and MFR are kept the same but the O2 mole fraction of oxidizer is changed. From numerical and experimental results, it is found that flame pattern depends on oxidizer/fuel ratio and spreading angle increases as the O2 mole fraction decreases.

Keywords
GCSC injector
Combustion characteristics
Momentum flux ratio
References
1
G.P. Sutton, History of Liquid-Propellant Rocket Engines in Russia, Formerly the Soviet Union, J. Propul. Power, 19 (2003) 1008-1037.
10.2514/2.6943
2
F.E.C. Culick, V. Yang, Overview of Combustion Instabilities in Liquid-Propellant Rocket Engines, Liquid Rocket Engine Combustion Instability, AIAA, Washington, DC, 169 (1995), 3–37.
3
S. Candel, Combustion Dynamics and Control: Progress and Challenges, Proceedings of the combustion institute, 29, 2002, 1-28.
10.1016/S1540-7489(02)80007-4
4
B.D. Bellows, Y. Neumeier, T. Lieuwen, Forced Response of a Swirling, Premixed Flame to Flow Disturbances, J. Propul. Power, 22 (2006) 1075- 1084.
10.2514/1.17426
5
A.P. Dowling, S. Stow, Acoustic Analysis of Gas Turbine Combustors, J. Propul. Power, 19 (2003) 751-764.
10.2514/2.6192
6
K.J. Park, J.Y. Lee, Y.B. Yoon, Study of Gap Thickness in Gas-Centered Swirl Coaxial Injector, KSPE Spring Conference, 2015, 450-453.
PMC4366966
7
J.H. Park, H.J. Kim, An Experimental Assessment of Combustion Stability of Coaxial Swirl Injectors and an Impinging Injector through Simulating Combustion Test, J. Korean Soc. Combust., 22(1) (2017) 46-52.
8
D.K. Huzel, D.H. Huang, Modern Engineering for Design of Liquid-Propellant Rocket Engines, Prog. Astronaut. Aero., AIAA, Washington, DC, 147 (1992), 35-36.
9
L. Crocco, Aspects of Combustion Stability in Liquid Propellant Rocket Motors Part I: Fundamentals. Low Frequency Instability With Monopropellants, J. Am. Rocket Soc., 21 (1951) 163-178.
10.2514/8.4393
10
J.W. Son, Y.H. Min, C.H. Sohn, An Experimental Study On Characteristics of Flame and Combustion Stability of Coaxial Jet Injectors, J. Korean Soc. Combust., 21(1) (2016) 15-21.
10.15231/jksc.2016.21.2.015
11
C.H. Sohn, Y.J. Kim, Y.M. Kim, V.P. Pikalov, A Scaling Method for Combustion Stability Rating of Coaxial Gas-Liquid Injectors in a Subscale Chamber, J. Mech. Sci. Technol., 26 (2012) 3691-3699.
10.1007/s12206-012-0843-3
12
Y.J. Kim, C.H. Sohn, M.G. Hong, S.Y. Lee, An Analysis of Fuel-Oxidizer Mixing and Combustion Induced by Swirl Coaxial Jet Injector with a Model of Gas-Gas Injection, Aerosp. Sci. Technol., 37 (2014) 37-47.
10.1016/j.ast.2014.05.006
13
J.W. Son, C.H. Sohn, G.J. Park, Y.B. Yoon, Spray Patterns and Injection Characteristics of Gas-Centered Swirl Coaxial Injectors, J. Aerosp. Eng., 30 (2017) 04017035―1-04017035―8.
14
ANSYS Fluent Theory Guide, Release 19.1, ANSYS Inc., 2018.
15
ANSYS Fluent Tutorial Guide, Release 19.1, ANSYS Inc., 2018.
Information
  • Publisher :The Korean Society Combustion
  • Publisher(Ko) :한국연소학회
  • Journal Title :Journal of The Korean Society Combustion
  • Journal Title(Ko) :한국연소학회지
  • Volume : 24
  • No :1
  • Pages :32-38
  • Received Date : 2018-11-12
  • Revised Date : 2019-01-02
  • Accepted Date : 2019-01-10
  • DOI :https://doi.org/10.15231/jksc.2019.24.1.032
Journal Informaiton Journal of The Korean Society Combustion Journal of The Korean Society Combustion
Online submission
  • NRF
  • KOFST
  • crossref cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close