One of the most important problems of exploitational use of marine gasturbine engine is knowledge about direction of changes realised unsteady processes. Individual dynamical features of each exploitated engine are determined on the way of costly experimental searches. These searches are qualified by numerous constructional and exploitational confinements. This paper concerns the application of mathematical modeling methods to analyzing gas-dynamic processes in marine gas turbines. The influence of geometry changes in axial compressor flow passage on kinematical air flow characteristics is presented. The elaborated mathematical model will make it possible to realize – in the future – simulative investigations of gas-dynamic processes taking place in a compressor fitted with controllable guide vanes.MODELLING RESEARCH OF THE CHARACTERISTICS OF AN AXIAL COMPRESSOR OF A TURBINE ENGINE WITH VARIABLE FLOW PASSAGE GEOMETRY
The paper concerns the application of mathematical modeling methods to the analysis of gas-dynamic processes in marine gas turbine engines.
The influence of changes in the geometry of the axial compressor flow passage on the kinematic characteristics of the flowing air is presented. The developed mathematical model will enable, in the future, the realization of research simulating gas-dynamic processes occurring in a compressor equipped with adjustable guide vanes.
1. INTRODUCTION
An important problem in the operation of ship gas turbine engines is knowing the influence of the changeable technical state of the engine on its working parameters. The compressor is a unit of a gas turbine engine that is especially sensitive to changes in its technical state during operation.
The more-or-less-contaminated atmospheric air flowing into the compressor causes, among other things, a continuously changing form of blade passages, increased roughness of blade surfaces, as well as a change in the mass of the compressor rotor. It seriously impacts the compressor’s operation stability, changes its characteristics, as well as the performance and efficiency of the entire (…)
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Source: Logistyka Magazine