本文在建立圆管二维瞬态传热模型的基础上,将反问题转化成正问题和最优化问题.采用有限元方法求解导热正问题,利用外壁面温度分布,从目标函数的泛函变分出发,根据共轭梯度法,实现了圆管内部的流体温度识别.通过典型算例的数值计算,验证了方法的准确性和抗噪性.
参考文献
[1] | 吴洪潭.二维对流换热反问题的共轭梯度法求解[J].宇航计测技术,2005(04):25-27,40. |
[2] | 薛齐文 .多宗量热传导反问题的数值求解[D].大连理工大学,2005. |
[3] | T. Lu;B. Liu;P. X. Jiang;Y. W. Zhang;H. Li .A two-dimensional inverse heat conduction problem in estimating the fluid temperature in a pipeline[J].Applied thermal engineering: Design, processes, equipment, economics,2010(13):1574-1579. |
[4] | 郭德朋,陆道纲,冯预恒.核电厂管线中的热分层现象[J].原子能科学技术,2007(05):570-574. |
[5] | H. -Y. Lee;J. -B. Kim;B. Yoo .Green's Function approach for crack propagation problem subjected to high cycle thermal fatigue loading[J].International Journal of Pressure Vessels and Piping,1999(8):487-494. |
[6] | Y. Lejeail;N. Kasahara .Thermal fatigue evaluation of cylinders and plates subjected to fluid temperature fluctuations[J].International Journal of Fatigue,2005(7):768-772. |
[7] | Young LJ. .Lifetime evaluation of cracked shaft sleeve of reactor coolant pump under thermal striping[J].International Journal of Solids and Structures,2001(46/47):8345-8358. |
[8] | Jones IS .Impulse response model of thermal striping for hollow cylindrical geometries[J].Theoretical and Applied Fracture Mechanics,2005(1):77-88. |
[9] | T. Lu;B. Liu;P. X. Jiang .Inverse estimation of the inner wall temperature fluctuations in a pipe elbow[J].Applied thermal engineering: Design, processes, equipment, economics,2011(11/12):1976-1982. |
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