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首页> 外文期刊>Progress in Aerospace Sciences >Inverse heat transfer methods for global heat flux measurements in aerothermodynamics testing
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Inverse heat transfer methods for global heat flux measurements in aerothermodynamics testing

机译：用于空泡动力学测试的全球热通量测量的逆传热方法

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摘要

This review provides a systematical description of the inverse heat transfer solutions applied to global heat-flux measurements using temperature-sensitive-coating techniques in hypersonic wind tunnels. The analytical inverse heat transfer solutions for a two-layer structure (typically a polymer sensor coating on a base) are focused to elucidate the effects of the relevant parameters including the polymer and base thicknesses, the thermal properties of materials, and the convective heat transfer at the base backside. Then, the numerical inverse heat transfer method is developed by incorporating the temperature-dependencies of the thermal properties in heat-flux calculation. Furthermore, correcting the lateral heat conduction effect is formulated as an image deconvolution problem based on a convolution-type integral equation with a Gaussian kernel. Other relevant topics are also discussed, including determining the non-uniform paint thickness distribution, in-situ correction for the effect of the temperature-dependent diffusivity, and in-situ calibration for the thermal penetration parameter of the polymer coating. Examples are given to demonstrate the applications of these inverse solutions in temperature-sensitive-paint (TSP) measurements.
机译：该综述提供了在超声波风隧道中使用温度敏感涂覆技术应用于全局热通量测量的反传热溶液的系统描述。用于双层结构的分析逆传热溶液（通常是碱基上的聚合物传感器涂层），重点是阐明包括聚合物和基础厚度的相关参数的效果，材料的热性能和对流热传递在基地背面。然后，通过在热通量计算中包含热性质的温度依赖性来开发数值逆传热方法。此外，基于具有高斯内核的卷积型积分方程，将校正横向导热效应配制成图像解卷积问题。还讨论了其他相关主题，包括确定不均匀的涂料厚度分布，原位校正对温度依赖性扩散率的影响，以及用于聚合物涂层的热渗透参数的原位校准。给出了这些反溶液在温度敏感涂料（TSP）测量中的应用。

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