Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties

doi:10.1016/j.actaastro.2024.02.033

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties
	Wang, Ruoyan 1,2; Lin, Xin 2; Wang, Zezhong 2; Wu, Kun 2; Pan, Junjie 2; Zhang, Zelin 2; Luo, Jiaxiao 2; Li, Fei 2; Yu, Xilong 1,2
刊名	ACTA ASTRONAUTICA
	2024-05-01
卷号	218 页码:269-281
关键词	Hybrid rocket Composite fuel grain Characteristic structure Radiation image Combustion properties
ISSN号	0094-5765
DOI	10.1016/j.actaastro.2024.02.033
通讯作者	Lin, Xin(linxin_bit@imech.ac.cn) ; Wang, Zezhong(wangzezhong@imech.ac.cn)
英文摘要	This work numerically and experimentally investigated the effect of the characteristic structure of nested composite fuel grains on their combustion properties. The characteristic structure comprised multiple helical grooves inside the fuel grain port, which formed during the combustion process. Three-dimensional steady-state simulations were employed to analyze the burning behavior of composite fuel grains with different scales of the characteristic structure (i.e., groove depth) of 0, 1, and 2 mm. An obvious swirl-gas flow field and large tangential velocity appeared for fuel grains with the characteristic structure, which was conductive to enhancing the propellant mixing. A larger flame region and more intense burning were correspondingly achieved, during which greater amounts of H2O and CO2 were generated than by fuel grain without the characteristic structure. Numerical results verified that the characteristic structure was theoretically beneficial to improving the combustion properties of the grains. Firing experiments were conducted using a laboratory-scale hybrid rocket engine with oxygen as the oxidizer. The flame structure and pulsation features were synchronously analyzed using a radiation imaging technique. Pure paraffin-based fuel grains with a circular port were tested for comparison. Both regression rates and combustion efficiencies of the composite fuel grains with characteristic structure scales of 1 mm and 2 mm showed significant improvement. The flame images exhibited an obvious helical shape and large area, which was consistent with the numerical analysis. Both the numerical and experimental results confirmed that the helical characteristic structure in the composite fuel grain played a key role in enhancing the combustion properties and demonstrate potential for further development.
资助项目	National Natural Science Foundation of China[92271117] ; National Natural Science Foundation of China[12072355] ; National Natural Science Foundation of China[11927803] ; Key -Area Research and Development Program of Guangdong Prov- ince[2021B0909060004] ; Youth Innovation Pro- motion Association of CAS[2022018]
WOS关键词	REGRESSION RATE ; MOTOR ; ENGINE ; FLOW
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:001205863500001
资助机构	National Natural Science Foundation of China ; Key -Area Research and Development Program of Guangdong Prov- ince ; Youth Innovation Pro- motion Association of CAS
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94972]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Lin, Xin; Wang, Zezhong
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ruoyan,Lin, Xin,Wang, Zezhong,et al. Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties[J]. ACTA ASTRONAUTICA,2024,218:269-281.
APA	Wang, Ruoyan.,Lin, Xin.,Wang, Zezhong.,Wu, Kun.,Pan, Junjie.,...&Yu, Xilong.(2024).Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties.ACTA ASTRONAUTICA,218,269-281.
MLA	Wang, Ruoyan,et al."Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties".ACTA ASTRONAUTICA 218(2024):269-281.