利用改进ART算法模拟重建炉膛截面温度场

Simulated Reconstruction of Cross-section Temperature Field in Furnace Using Improved Algebraic Reconstruction Technique

锅炉炉膛内温度场的非接触式测量对判断炉内燃烧状况有重要意义。分析了燃煤锅炉内辐射传递模型并将其适当简化为线性模型。提出了在辐射投影线对称结构下简化投影系数计算并调整投影序列迭代顺序以改进ART算法。模拟数值试验表明,采用改进的ART算法重建截面温度场速度快质量高。

The temperature field non-contact measurement is important for the judgment of burning situation in furnace. The nonlinear modeling of radiation transmission is studied and simplified into linear modeling. Based on the symmetrical structure, simplified computation of projection coefficient and effective adjustment of projection iteration order is used to improve Algebraic Reconstruction Technique （ART）. The experiment using simulated data shows that this method is fast and effective.