用谱方法计算流体力学一些流动现象的整体稳定性,包含位置式PID算法、积分分离式PID，时间序列数据分析中的梅林变换工具。- Spectral methods of computational fluid dynamics flow of some of the overall stability of the phenomenon, It contains positional PID algorithm, integral separate PID, Time series data analysis Mellin transform tool.