A three-dimensional transport calculation code was programmed. The triangular prism and the tetrahedron elements were used in the calculation. 据此编制了三维中子输运方程的非结构网格离散纵标计算程序,并采用三棱柱元素和四面体元素剖分对一系列基准问题做了验算。
We programmed a program with the MATLAB to process the high-frequency seismic data of concrete elements by the short-time Fourier transform and extract the master frequency of each window, and we draw a time-frequency isoanomaly line with SURFER. 对于混凝土构件的高频地震数据,利用自编的MATLAB程序进行短时傅里叶变换,提取各时窗的主频,然后用SURFER绘制时间-频率等值线图。