CAJ | 학술논문

针对烧蚀传热问题，在热解面模型的基础上通过伴随方程推导建立了基于测点温度辨识表面热流的方法，并进行了算例考核。结果表明：热流辨识结果与真值符合较好，辨识结果与真值之间的偏差随测量误差的增加而增加；烧蚀后退量测量结果的误差对辨识结果有较为显著的影响。然后，将该辨识方法用于钝头型碳酚醛材料Narmco4028试件在陶瓷加热风洞中的烧蚀试验结果分析，结果表明辨识出的表面热流与加热功率基本符合，辨识方法是有效的，在工程实际中有较好的应用前景。
침대소식전열문제，재열해면모형적기출상통과반수방정추도건립료기우측점온도변식표면열류적방법，병진행료산례고핵。결과표명：열류변식결과여진치부합교호，변식결과여진치지간적편차수측량오차적증가이증가；소식후퇴량측량결과적오차대변식결과유교위현저적영향。연후，장해변식방법용우둔두형탄분철재료Narmco4028시건재도자가열풍동중적소식시험결과분석，결과표명변식출적표면열류여가열공솔기본부합，변식방법시유효적，재공정실제중유교호적응용전경。
Ablation is one of the main means of thermal protection for hypersonic flight vehicles.In this paper,based on pyrogeneration-plane ablation model and temperature measurement at some specific loca-tions,the surface heat flux estimation method is developed with adjoint equation analysis and validated by numerical examples.It is shown that the estimated heat flux agrees with the exact value well,and the differ-ence between the estimated heat flux and the exact value grows as the measurement noise increases.It is also revealed that the measured noise in the ablated surface recession value may have a significant influence on the estimated heat flux.Furthermore,the estimation method is utilized to analyze the experimental ablation re-sults of the blunt Carbon-phenonic material Narmco4028 in ceramic-heated tunnel,it is found that the esti-mated surface heat flux value is close to the heating power of the arc-heater.This result further verifies that the estimation method is effective and may have a bright prospect in engineering practice.