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Thermochemical kinetic model for high altitude and low altitude high-speed flow and radiation prediction based on the State-to-State model

文献类型：期刊论文

作者Du, YaoWen2; Sun, SuRong2; Wang, HaiXing2; Huang HJ(黄河激)3; Yan, Cong3; Meng X(孟显)3; Chen, Xuan1
刊名PHYSICS OF FLUIDS
出版日期2025-03-01
卷号37期号:3页码:24
ISSN号1070-6631
DOI10.1063/5.0249940
通讯作者Sun, Su-Rong(ssr18@buaa.edu.cn) ; Wang, Hai-Xing(whx@buaa.edu.cn)
英文摘要The reasonable thermochemical kinetic model is a key prerequisite for accurately predicting the non-equilibrium flow field and radiation of high-speed atmospheric reentry vehicles. A vibrational and electronic specific State-to-State kinetic model is first established to couple with post-shock flow equations to analyze the thermochemical non-equilibrium flow characteristics. It is found that the vibrational and electronic energy levels non-Boltzmann metric are large at the flight altitude higher than 50 km, which is thus considered a demarcation line for constructing the low- and high-altitude models. Therefore, in this study, two new physics-based thermochemical kinetic models are constructed from the State-to-State model using the multi-group maximum entropy method for low-altitude and high-altitude regions, respectively, across the entire flight velocity domains. By analyzing the differences in post-shock flow physical characteristics under various flight altitudes, single-group and multi-group functions are, respectively, adopted to reconstruct the internal energy levels distributions within the flow field for the low-altitude and high-altitude chemical models. Compared to the State-to-State model, the low-altitude and high-altitude models significantly reduce the number of solved species and chemical reactions, while maintaining computational accuracy of post-shock non-equilibrium flow, with calculated thermodynamic parameters error less than 5% and chemical parameters error below 10%. Finally, the low-altitude and high-altitude chemical models constructed in this study exhibit better predictive capability in reproducing ground experimentally measured electron number density and predicting reentry flight heat flux and radiation compared with the classical Park's and Gupta's models, demonstrating the promising applicability of developed models. This study provides a new, reasonable chemical model for the entire flight altitude and velocity domain that can be used in computational fluid dynamics simulations to predict non-equilibrium flow and radiation in high-speed reentry vehicles.
分类号一类/力学重要期刊
WOS关键词THERMAL RATE CONSTANTS ; VIBRATIONAL-RELAXATION ; RATE COEFFICIENTS ; CROSS-SECTIONS ; AIR ; DISSOCIATION ; MOLECULES ; LAYER
资助项目National Natural Science Foundation of China10.13039/501100001809[12375245] ; National Natural Science Foundation of China10.13039/501100001809[12175011] ; National Natural Science Foundation of China[YWF-23-L-1221] ; Fundamental Research Funds for the Central Universities
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001446479800002
资助机构National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
其他责任者Sun, SuRong，Wang, HaiXing
源URL[http://dspace.imech.ac.cn/handle/311007/100661]  
专题力学研究所_高温气体动力学国家重点实验室
作者单位1.Sci & Technol Space Phys Lab, Beijing 100076, Peoples R China
2.Beihang Univ, Sch Astronaut, Beijing 102206, Peoples R China;
3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Du, YaoWen,Sun, SuRong,Wang, HaiXing,et al. Thermochemical kinetic model for high altitude and low altitude high-speed flow and radiation prediction based on the State-to-State model[J]. PHYSICS OF FLUIDS,2025,37(3):24.
APA Du, YaoWen.,Sun, SuRong.,Wang, HaiXing.,黄河激.,Yan, Cong.,...&Chen, Xuan.(2025).Thermochemical kinetic model for high altitude and low altitude high-speed flow and radiation prediction based on the State-to-State model.PHYSICS OF FLUIDS,37(3),24.
MLA Du, YaoWen,et al."Thermochemical kinetic model for high altitude and low altitude high-speed flow and radiation prediction based on the State-to-State model".PHYSICS OF FLUIDS 37.3(2025):24.

入库方式： OAI收割

来源：力学研究所

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