| 非稳态表面热流反演算法研究 |
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| 引用本文： | 钱炜祺,何开锋,桂业伟,汪清.非稳态表面热流反演算法研究[J].空气动力学学报,2010,28(2). |
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| 作者姓名： | 钱炜祺 何开锋 桂业伟 汪清 |
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| 作者单位： | 中国空气动力研究与发展中心,四川,绵阳,621000 |
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| 基金项目： | 国家自然科学基金项目(10702076) |
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| 摘 要： | 表面热流的反演是一类典型的热传导逆问题。在采用有限体积法数值求解三维非稳态热传导问题的基础上,将该热传导逆问题转化为优化问题,建立了顺序函数法和共轭梯度法这两类反演算法。采用这两类算法对一个典型算例的计算结果表明:建立的两类反演算法都是有效的,具有较好的抗噪性能。顺序函数法的优势在于算法的推导和实现较为简便,但算法中存在人为确定的参数r,该参数的选取对反演结果有较大影响。共轭梯度法的算法中没有自由参数,但算法的推导和实现都较为复杂,其反演结果的精度和顺序函数法的反演结果精度基本相当。
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| 关 键 词： | 三维非稳态热传导逆问题 表面热流 顺序函数法 共轭梯度法 |
Inverse estimation of surface heat flux for three-dimensional transient heat conduction problem |
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| QIAN Wei-qi,HE Kai-feng,GUI Ye-wei,WANG Qing.Inverse estimation of surface heat flux for three-dimensional transient heat conduction problem[J].Acta Aerodynamica Sinica,2010,28(2). |
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| Authors: | QIAN Wei-qi HE Kai-feng GUI Ye-wei WANG Qing |
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| Institution: | China Aerodynamics Research & Development Center/a>;Mianyang Sichuan 621000/a>;China |
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| Abstract: | Inverse estimation of surface heat flux for three-dimensional transient heat conduction problem from temperature measurements is a typical Inverse Heat Conduction Problem(IHCP).In this paper,based on the numerical simulation of three-dimensional transient heat conduction problem with the Finite Volume Method(FVM),this IHCP is converted to a parameter optimization problem and two estimation methods,Sequential Function Method(SFM) and Conjugate Gradient Method(CGM),are developed.After applying these two metho... |
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| Keywords: | three dimensional transient inverse heat conduction problem surface heat flux sequential function method conjugate gradient method |
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