充气式返回舱化学非平衡仿真分析
2024,46(3):79-87
何青松
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094，heqs2021@sina.com
王广兴
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
冯瑞
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
董海波
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
黄明星
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
贾贺
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094，heqs2021@sina.com
王广兴
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
冯瑞
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
董海波
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
黄明星
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
贾贺
北京空间机电研究所, 北京 100094;
中国航天科技集团有限公司 航天进入、减速与着陆技术实验室, 北京 100094
摘要：
采用空气五组分模型对充气式返回舱的气动特性进行了化学非平衡数值模拟研究,考察了返回舱外形变化对流场温度和压力的分布以及壁面热流密度和压强的影响,分析了流场中组分分布情况。研究结果表明,外形变化在总体上对返回舱流场特性影响较小,会使舱体壁面处的热流密度有所增加；对流场组分分布的研究发现,由于N2比O2更难解离,在整个流场中N的摩尔分数远低于O的摩尔分数；在目前的计算条件下,沿轴线和壁面的氮氧比与来流基本保持一致。仿真结果在总体上与实验结果符合较好,验证了仿真模型的可靠性。
采用空气五组分模型对充气式返回舱的气动特性进行了化学非平衡数值模拟研究,考察了返回舱外形变化对流场温度和压力的分布以及壁面热流密度和压强的影响,分析了流场中组分分布情况。研究结果表明,外形变化在总体上对返回舱流场特性影响较小,会使舱体壁面处的热流密度有所增加；对流场组分分布的研究发现,由于N2比O2更难解离,在整个流场中N的摩尔分数远低于O的摩尔分数；在目前的计算条件下,沿轴线和壁面的氮氧比与来流基本保持一致。仿真结果在总体上与实验结果符合较好,验证了仿真模型的可靠性。
基金项目：
国家自然科学基金资助项目
国家自然科学基金资助项目
Chemical nonequilibrium simulation analysis of inflatable reentry decelerator
HE Qingsong
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China,heqs2021@sina.com
WANG Guangxing
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
FENG Rui
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
DONG Haibo
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
HUANG Mingxing
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
JIA He
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China,heqs2021@sina.com
WANG Guangxing
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
FENG Rui
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
DONG Haibo
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
HUANG Mingxing
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
JIA He
Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;
Laboratory of Aerospace Entry, Descent and Landing Technology, China Aerospace Science and Technology Corporation, Beijing 100094, China
Abstract：
The aerodynamic characteristics of the inflatable reentry decelerator were studied with chemical nonequilibrium numerical simulation using five-species air model. The effects of reentry decelerator′s shape deformation on distributions of flow temperature and pressure , heat flux and pressure along the wall were investigated, and the mole fractions of each species in the flow filed were presented. The modeling results show that the shape deformation of inflatable reentry decelerator has little influence on flow characteristic, and leads an increase of heat flux on the capsule surface. The study of species distribution shows that since N2 is more difficult to dissociate than O2, the mole fraction of N is much lower than the mole fraction of O in the flow filed. Under the current calculation conditions, the ration of nitrogen and oxygen along the wall and axis is almost consistent with the incoming flow. The modeling study results are in good agreement with the experiment results, which verify the reliability of the model.
The aerodynamic characteristics of the inflatable reentry decelerator were studied with chemical nonequilibrium numerical simulation using five-species air model. The effects of reentry decelerator′s shape deformation on distributions of flow temperature and pressure , heat flux and pressure along the wall were investigated, and the mole fractions of each species in the flow filed were presented. The modeling results show that the shape deformation of inflatable reentry decelerator has little influence on flow characteristic, and leads an increase of heat flux on the capsule surface. The study of species distribution shows that since N2 is more difficult to dissociate than O2, the mole fraction of N is much lower than the mole fraction of O in the flow filed. Under the current calculation conditions, the ration of nitrogen and oxygen along the wall and axis is almost consistent with the incoming flow. The modeling study results are in good agreement with the experiment results, which verify the reliability of the model.
收稿日期：
2022-02-13
2022-02-13
