Development a Mathematical Model for Researching Dynamic Processes in the Labyrinth Seal of Centrifugal Compressor Stage

Research of dynamic processes occurring under real operating conditions of centrifugal compressors often require the use of interdisciplinary approaches. This is determined by the character of the processes, which significantly affect each other during the compressor operation. However, when using interdisciplinary approaches, there are difficulties in the numerical implementation. They are associated with the need to take into account all the geometric and physical features of the processes under research, which leads to significant time and computational costs. At this article discusses issues related to the causes of oscillatory processes in the centrifugal compressor stage, in particular, in the labyrinth seal channel. In the article using 2FSI approach allowing to take into account the bilateral interaction of physical process on another. The article discusses issues related to the causes of oscillatory processes in the centrifugal compressor stage, in particular, in the labyrinth seal channel. The computational domain of research is presented, conceptual and mathematical statements are performed, which allow describing, among other things, self-oscillatory processes using the 2FSI approach.