空气动力学学报2024，Vol.42Issue(4)：46-54,9.DOI:10.7638/kqdlxxb-2023.0123
升力体缝隙模型红外测热试验及分析
Infrared thermal tests and analysis of a lifting-body model with gaps
张志刚 1陈挺 2赵金山 2祝智伟 2廖军好 2石义雷 2尹琰鑫 3彭治雨2
作者信息
- 1. 南京航空航天大学航空宇航学院,南京 210016||中国空气动力研究与发展中心,绵阳 621000
- 2. 中国空气动力研究与发展中心,绵阳 621000
- 3. 中国运载火箭技术研究院,北京 100076
- 折叠
摘要
Abstract
The infrared thermal measurements and data analysis of a lifting-body model with gaps were carried out in the Φ0.3 m hypersonic low-density wind tunnel of China Aerodynamics Research and Development Center.The experimental Mach number is 12,the total temperature is 668 K,the total pressure is 4.731 MPa,and the attack angles are 0° and 35°.Infrared thermograms of the model were obtained through experiments,and corresponding numerical simulation analysis was conducted.On this basis,the influence of selecting different frames of the infrared thermograms for data processing on the heat flux results was studied,and the heat flux increment caused by the gap interference was also analyzed.The results show that model jitter has a significant impact on the data processing after model release,thus it is recommended to select the infrared thermography results after the model reaches the stable state(about 1.2 s)in the data processing.More attention needs to be paid to the heat flux increase in the interference area of the T-shaped gaps,especially at 35°angle of attack,where the peak heat flux in the interference area of the gaps can reach more than 8 times that of the non-gap condition.The infrared thermal measurement data is in good agreement with the CFD results,and some difference only appears in a small peak interference area.In the next stage,more work needs to be carried out in the CFD model chamfering and the infrared thermal measurement scheme optimization.关键词
热流密度/红外热图/风洞试验/缝隙/升力体Key words
heat flux density/infrared thermography/wind tunnel test/gaps/lifting-body model分类
航空航天引用本文复制引用
张志刚,陈挺,赵金山,祝智伟,廖军好,石义雷,尹琰鑫,彭治雨..升力体缝隙模型红外测热试验及分析[J].空气动力学学报,2024,42(4):46-54,9.
