用共轭梯度法与蒙特卡洛法求解三维系统的辐射热负荷反问题  

Solution of The Inverse Wall Radiative Load Problem in Three-dimensional System Using The Monte-Carlo Method and The Conjugate Gradient Method

作　　者：李炳熙[1] 范宏武[1] 杨励丹[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨 150001

出　　处：《动力工程》2001年第1期1082-1085,共4页Power Engineering

摘　　要：采用蒙特卡洛法与共轭梯度法确定三维矩形炉膛中燃烧器或加热表面的温度分布与热负荷分布。讨论了测量误差对计算结果的影响 ,结果表明 :当测量值不含误差时 ,用共轭梯度法计算得到的加热表面的温度值和热流量值与其真实值吻合很好。实验测量误差对计算精度的影响与加热表面及受热表面之间的辐射热交换系数有关 ,辐射热交换系数越大 ,测量误差对计算结果的影响越大。图 4参The objective of this paper is to solve the inverse radiative load problem within three dimensional system using the Monte Carlo Method and the Conjugate Gradient Method(CGM). The effects of the measurement error on the estimated results are also discussed. From above mentioned analysis, following results are obtained, the agreement between the estimated and the exact values of the heater surfaces are excellent, when the temperature and heat flux distributions of the heated object arer exact. The effects of the measurement error on the estimated results are related to the Radiative Energy Absorption Distribution(READ) of the heater surfaces Vs heated surfaces. The influences of the measurement error on the estimated results will be large, when the READ is large. Figs 4 and refs 6.

关 键 词：辐射 热负荷反问题 蒙特卡洛法 共轭梯度法 传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]