This article is mainly about the study on the dynamic characteristics of labyrinth seals and concludes the dynamic characteristic of labyrinth seals with the two - control - volume model by the means of turbulent flow theory and calculating fluid mechanics in order to further study on the flowing law of the labyrinth seals 本论文围绕迷宫密封流场动力特性系数的研究展开的，采用两控制容积模型，利用湍流理论和计算流体力学的方法，深入研究迷宫密封内部流动的规律、密封性能，获得迷宫密封的动力特性系数。
