Publicado 12 números por año
ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684
Indexed in
SELF-PULSATION CHARACTERISTICS OF A GAS-LIQUID SWIRL COAXIAL INJECTOR
SINOPSIS
Self-pulsation usually occurs in the gas-liquid swirl coaxial injector of a liquid rocket engine and it is accompanied by an intense scream. When self-pulsation occurs, pressure and flow rate oscillations are detected by the strong interactions between the liquid and gas phases. Because this oscillation can amplify combustion instabilities in liquid rocket, self-pulsation must be suppressed. Considerable research has been performed on self-pulsation characteristics, but the mechanism of self-pulsation has not been clarified. The main objective of this research is to understand the mechanism of self-pulsation. Toward this objective, the acoustic and spray characteristics of self-pulsation spray were investigated using the acoustic device and laser system; the dominant frequency of the liquid sheet was also measured. It was found that the frequencies of the scream and the spray oscillation are linearly proportional to the liquid and gas axial Reynolds number, and the self-pulsation frequency is determined by the unstable wave of the liquid sheet. Therefore it is concluded that self-pulsation occurs due to the dominant wave of the liquid sheet.
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Kang Zhongtao, Li Qinglian, Cheng Peng, Zhang Xinqiao, Wang Zhenguo, Effects of Recess on the Self-Pulsation Characteristics of Liquid-Centered Swirl Coaxial Injectors, Journal of Propulsion and Power, 32, 5, 2016. Crossref
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Yoon Jungsoo, Chung Jae Mook, Yoon Youngbin, Study on self-pulsation characteristics of gas centered shear coaxial injector for supercavitating underwater propulsion system, International Journal of Naval Architecture and Ocean Engineering, 3, 4, 2011. Crossref
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Kang Zhongtao, Li Qinglian, Cheng Peng, Zhang Xinqiao, Wang Zhen-guo, Effects of self-pulsation on the spray characteristics of gas–liquid swirl coaxial injector, Acta Astronautica, 127, 2016. Crossref
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Cho Seongho, Kim Haisol, Yoon Youngbin, Sung Hong-Gye, Dynamic characteristics of a cryogenic swirl flow under supercritical conditions, Aerospace Science and Technology, 51, 2016. Crossref
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Eberhart Chad J., Frederick Robert A., Fluid Oscillations of a Swirl Coaxial Injector Under High-Frequency Self-Pulsation, Journal of Propulsion and Power, 33, 4, 2017. Crossref
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Eberhart Chad J., Frederick Robert A., Details on the Mechanism of High-Frequency Swirl Coaxial Self-Pulsation, Journal of Propulsion and Power, 33, 6, 2017. Crossref
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Bai Xiao, Li Qinglian, Cheng Peng, Sheng Liyong, Kang Zhongtao, Investigation of self-pulsation characteristics for a liquid-centered swirl coaxial injector with recess, Acta Astronautica, 151, 2018. Crossref
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Bai Xiao, Sheng Liyong, Li Qinglian, Cheng Peng, Kang Zhongtao, Effects of annulus width and post thickness on self-pulsation characteristics for Liquid-Centered Swirl Coaxial Injectors, International Journal of Multiphase Flow, 122, 2020. Crossref
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Jeong Seokgyu, Bae Jinhyun, Chung Yunjae, Yoon Sam S., Yoon Youngbin, Self-Excited Instability of Closed-Type Swirl Injector with Varying Conditions, Journal of Propulsion and Power, 36, 2, 2020. Crossref
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Oswald Walter, Lauk Jan, Gödeke Lutz, Ehrhard Peter, Willenbacher Norbert, Analysis of Paint Flow Pulsations during High-Speed Rotary Bell Atomization, Coatings, 9, 10, 2019. Crossref
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Bai Xiao, Cheng Peng, Sheng Liyong, Li Qinglian, Zhang Xinqiao, Kang Zhongtao, Effects of backpressure on self-pulsation characteristics of liquid-centered swirl coaxial injectors, International Journal of Multiphase Flow, 116, 2019. Crossref
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Chu Wei, Li Xiuqian, Tong Yiheng, Ren Yongjie, Numerical investigation of the effects of gas-liquid ratio on the spray characteristics of liquid-centered swirl coaxial injectors, Acta Astronautica, 175, 2020. Crossref
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Bai Xiao, Cheng Peng, Li Qinglian, Sheng Liyong, Kang Zhongtao, Effects of self-pulsation on combustion instability in a liquid rocket engine, Experimental Thermal and Fluid Science, 114, 2020. Crossref
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Eberhart Chad J., Frederick Robert A., Parametric Evaluation of Swirl Injector Dynamics in the High-Frequency Range, Journal of Propulsion and Power, 33, 5, 2017. Crossref
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Bai Xiao, Cao Pengjin, Li Qinglian, Cheng Peng, The break phenomenon of self-pulsation for liquid-centered swirl coaxial injectors, International Journal of Multiphase Flow, 142, 2021. Crossref
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Jeong Gijeong, Jeong Seokgyu, Lee Ingyu, Yoon Youngbin, Dynamic Characteristic Analysis of a Gas–Liquid Swirl Injector Using Planar Laser Imaging, AIAA Journal, 2021. Crossref
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Eberhart Chad J., Lineberry David M., Frederick Robert A., The Influence of Annular Jet Dynamics on Swirl-coaxial Injection During Self-pulsations, 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2013. Crossref
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Jeong Seokgyu, Yoon Youngbin, Sheet-breakup characteristics of a closed-type swirl injector considering internal flow instability, Acta Astronautica, 186, 2021. Crossref
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Chu Wei, Ren Yongjie, Tong Yiheng, Li Xiuqian, Jiang Chuanjin, Lin Wei, Numerical Study of Effects of Backpressure on Self-Pulsation of a Liquid-Centred Swirl Coaxial Injector, International Journal of Multiphase Flow, 139, 2021. Crossref
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Jiang Chuanjin, Xie Yuan, Gao Yuchao, Chu Wei, Tong Yiheng, Li Xiuqian, Nie Wansheng, Influence of Self-Pulsation on Atomization Characteristics of Gas-Centered Swirl Coaxial Injector, Frontiers in Energy Research, 9, 2021. Crossref
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Cao Peng-jin, Bai Xiao, Li Qing-lian, Cheng Peng, Experimental and theoretical study on the break phenomenon of self-pulsation for liquid-centered swirl coaxial injectors, Journal of Zhejiang University-SCIENCE A, 23, 2, 2022. Crossref
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Ahn Jonghyun, Lim Hayoung, Jeong Gijeong, Ahn Kyubok, Effect of the recess length on the dynamic characteristics of liquid-centered swirl coaxial injectors, Acta Astronautica, 199, 2022. Crossref
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Cardona Santiago, Payri Raul, Salvador F.J., Gimeno Jaime, Effects of varying the liquid fuel type and air co-flow conditions on the microscopic spray characteristics in an atmospheric annular co-flow spray burner, Fuel, 335, 2023. Crossref