Gas-centered swirl coaxial injectors have become an important subject of study for staged combustion rocket engines with hydrocarbon fuels. While these injectors are employed successfully in rocket engines, it is very rare to find the related research results as applicable to design data. An experimental study on spray characteristics of gas-centered swirl coaxial injectors has been performed. The effects of momentum flux ratio and recess length on the spray characteristics have been investigated by cold flow tests with a photographic technique. The liquid intact length , which profoundly affects the global spray characteristics, decreases as the momentum flux ratio increases. The critical momentum flux ratio is introduced to identify the flow patterns as internal or external mixing in the injectors. Concerning the effect of the recess length , it is shown that the spray cone angle and the drop size decrease as increases.
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e-mail: conquet@kari.re.kr
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December 2011
Research Papers
Experimental Study on Spray Characteristics of Gas-Centered Swirl Coaxial Injectors
Jaehyoung Jeon,
Jaehyoung Jeon
Advanced Rocket Propulsion Team, Korea Aerospace Research Institute
, 169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
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Moongeun Hong,
e-mail: conquet@kari.re.kr
Moongeun Hong
Advanced Rocket Propulsion Team, Korea Aerospace Research Institute
, 169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
Search for other works by this author on:
Yeoung-Min Han,
Yeoung-Min Han
Propulsion Test Team, Korea Aerospace Research Institute,
169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
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Soo Yong Lee
Soo Yong Lee
Advanced Rocket Propulsion Team, Korea Aerospace Research Institute
, 169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
Search for other works by this author on:
Jaehyoung Jeon
Advanced Rocket Propulsion Team, Korea Aerospace Research Institute
, 169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
Moongeun Hong
Advanced Rocket Propulsion Team, Korea Aerospace Research Institute
, 169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
e-mail: conquet@kari.re.kr
Yeoung-Min Han
Propulsion Test Team, Korea Aerospace Research Institute,
169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
Soo Yong Lee
Advanced Rocket Propulsion Team, Korea Aerospace Research Institute
, 169-84 Gwahangro, Yuseong, Daejeon 305-333, South Korea
J. Fluids Eng. Dec 2011, 133(12): 121303 (7 pages)
Published Online: December 23, 2011
Article history
Received:
February 6, 2011
Revised:
October 12, 2011
Online:
December 23, 2011
Published:
December 23, 2011
Citation
Jeon, J., Hong, M., Han, Y., and Lee, S. Y. (December 23, 2011). "Experimental Study on Spray Characteristics of Gas-Centered Swirl Coaxial Injectors." ASME. J. Fluids Eng. December 2011; 133(12): 121303. https://doi.org/10.1115/1.4005344
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