Inverse problem for thermal radiation distribution on turbine blade under quartz lamp irradiation

IF 3.1 3区 物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION
Xian-long Meng, Xin Xu, Ya-song Zhu, Cun-liang Liu
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引用次数: 0

Abstract

Due to the strong time-varying characteristics and complex geometry of aerospace components, rapid changes in the distribution of radiative heat flux on the test surface are often required during non-uniform aerodynamic heating tests. However, it takes time to adjust the geometric parameters of the lamp array, which cannot meet the requirement for rapidly changing radiative heat flux distribution. To address this issue, a new method for calculating radiant heat flux and a fast linear analysis method of quartz lamp power are proposed which can calculate radiant heat flux distribution of complex surface and meet the need of timeliness and rapidity in radiant heat flux distribution, making it more suitable for engineering applications. Through numerical verification under single lamp and quartz lamp array, the maximum difference between the theoretical analysis method and the Monte Carlo method is less than 2.25% under single lamp, and less than 5% under quartz lamp array. Finally, turbine blade model and plane model are taken as research objects to verify the feasibility and reliability of the fast linear analysis method of quartz lamp power. The results show that the relative average error of the calculated quartz lamp power is 5.86% and 14.83%, respectively, compared with the actual power. This provides a reference and basis for the rapid simulation design of thermal radiation environment during the experiment.

石英灯照射下涡轮叶片热辐射分布的逆问题
由于航空航天部件具有强烈的时变特性和复杂的几何形状,在非均匀空气动力加热试验中,往往需要快速改变试验表面的辐射热通量分布。然而,调整灯阵列的几何参数需要时间,无法满足快速变化辐射热通量分布的要求。针对这一问题,提出了一种新的辐射热通量计算方法和石英灯功率快速线性分析方法,可以计算复杂表面的辐射热通量分布,满足辐射热通量分布的及时性和快速性要求,更适合工程应用。通过在单灯和石英灯阵列下的数值验证,理论分析方法与蒙特卡罗方法的最大差异在单灯下小于 2.25%,在石英灯阵列下小于 5%。最后,以涡轮叶片模型和平面模型为研究对象,验证了石英灯功率快速线性分析方法的可行性和可靠性。结果表明,计算出的石英灯功率与实际功率相比,相对平均误差分别为 5.86% 和 14.83%。这为实验过程中热辐射环境的快速模拟设计提供了参考和依据。
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来源期刊
CiteScore
5.70
自引率
12.10%
发文量
400
审稿时长
67 days
期刊介绍: The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.
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