DEVELOPMENT OF AN INVERSE HEAT TRANSFER MODEL AND ITS APPLICATION IN THE PREDICTION OF THE INTERFACIAL HEAT FLUX
DEVELOPMENT OF AN INVERSE HEAT TRANSFER MODEL AND ITS APPLICATION IN THE PREDICTION OF THE INTERFACIAL HEAT FLUX
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DOI：
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发表时间：
2007
影响因子：
2.3
通讯作者：
Shoumei Xiong
中科院分区：
文献类型：
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作者：
Shoumei Xiong
基于一种反传热方法——非线性估计法，建立了确定表面热流密度和传热系数的数学模型。开发了一个通用的反传热分析计算机程序，并利用在一维网格边界上施加三角形热流所产生的温度数据来估算热流历史。通过将估算的热流密度与三角热流密度历史进行比较，验证了反换热程序的正确性。研究了热电偶延迟、热流密度形状、计算参数、温度采样频率和测温点到表面距离等因素对表面热流密度预测的影响。此外，还讨论了减少此类影响的一些方法。
A mathematic model for the determination of the surface heat flux and heat trans- fer coefficient was built based on one of the inverse heat transfer methods-the nonlinear estimation method.A general inverse heat transfer analysis computer program was developed and used to es- timate the heat flux history by the temperature data generated by applying a triangle heat flux on one of the one dimensional mesh boundaries.Validation of the inverse heat transfer program was conducted by comparing the estimated heat flux with the triangle heat flux history.The influences of the thermocouple delay,the shape of the heat flux,calculation parameters,temperature sampling frequency and the distance from the temperature measurement point to the surface on the prediction of the surface heat flux were also studied.Additionally,some approaches in reducing such influences were also discussed.