在原有散斑干涉术的基础上,改变其中所用的数据处理方法,将实验测得的穿过轴对称喷灯火焰后光线偏转角Φ及对应入射位置y的离散值,用多项式曲线拟合的最小二乘解程序,求出Φ与y的函数关系Φ=Φ(y),并代入Abel变换积分中,计算出喷灯火焰中温度分布,得到较满意的结果,比起常用的Cremero与Birkebak方法要简便得多。 On the basis of the original speckle interferometry, the data processing methods used therein are changed. The experimentally measured values ​​of the deflection angle Φ and the discrete value corresponding to the incident position y after passing through the axisymmetric torch flame are obtained by the polynomial curve fitting Second, solve the function Φ and Φ function Φ = Φ (y), and into the Abel transform integral, calculate the temperature distribution in the torch flame, get more satisfactory results, compared with the commonly used Cremero and Birkebak method Much easier.