抽样定理法重建流场的三维温度分布

THE RECONSTRUCTION OF 3D TEMPERAIURE DISTRIBUTION IN HEAT FLOW BY SAMPLING THEOREM

结合气流场温度较低，只能得到较少干涉条纹的实际情况，提出了采用轴样定理法重建流场的三维温度分布的模型，并考查了该方法的计算机模拟运算结果，对具体的对象，进行了实验，并采用图像处理方法对条纹进行了一系列处理，最后重建了二个截面上的温度分布。

Based on the fact that only few fringes can be obtained in the low temperaturegas flow,the sampling theorem is adopted for reconstructing the 3D temperature distri-bution. The computer simulation results are given with this algothm. A test flow field is reported.The fringes of heat flow are processed and measured by computer automaticprocessing system. Temperature distributions on two cross-sections of the heat flow are displayed.