Abstract

In the research conducted has been an assesmnent on the influnce of the labyrinth seals in the 13K215 turboset on the dynamic properties of the machine working under stable conditions, as well as when there was a reduction in the systems stability margin.

The existing complex and nonlinear model of the 13K215 turboset and the application software for the model's dynamic investigation were used, coupling with two models of the seals. One - a very simplified model, te so-called bearings model, where the barriers in the form of labyrinth plates are neglected allowed the use of a code for the analysis of the static and dynamic properties of the slide bearings. The second one - much more complicated, the so-called fluid-flow model, allowed the incorporation of the disturbance of flow, caused by the labyrinth plates.