Image based heating rate calculation from thermographic data considering lateral heat conduction
Image based heating rate calculation from thermographic data considering lateral heat conduction
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DOI：
10.1016/j.ijheatmasstransfer.2005.12.018
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发表时间：
2006-07-01
影响因子：
5.2
通讯作者：
Estorf, Malte
中科院分区：
文献类型：
--
作者：
Estorf, Malte
提出了一种基于图像的瞬态表面法向热流计算方法。它是基于三维线性热传导方程的解析解。该方法产生正确的结果，即使在具有较强的横向梯度的区域的表面法向热通量，考虑到瞬态表面温度的区域周围的每个评价点内的热图像。热通量的解决方案可以通过迭代正则化方法相对于测量误差稳定。在合成测试用例中的方法的验证表明，在广泛的傅立叶数的良好的精度。(c)2006爱思唯尔有限公司版权所有。
An image based method for transient surface normal heat flux calculation from thermographic data is suggested. It is based on an analytical solution of the three-dimensional linear heat conduction equation. The method yields correct results for the surface normal heat flux even in regions with strong lateral gradients by taking into account the transient surface temperature of an area surrounding each evaluation point within the thermographic image. The solution for the heat flux can be stabilized with respect to measurement errors by an iterative regularization method. The validation of the method in synthetic test cases indicates its good accuracy over a broad range of Fourier numbers. (c) 2006 Elsevier Ltd. All rights reserved.