Газодинамическая доводка центробежного компрессора

Abstract

New engines are generally developed on the edge of the existing capabilities in unit efficiency, material strength, weight parameters, and often even with the scope of its enhancement. Thus obtaining target performance parameters is quite a challenging task. In practice even optimally designed engine requires long performance development. This paper is devoted to performance development of one of the engine units, particularly - centrifugal compressor. This study reviews the analysis of ways and methods to improve aerodynamic performance. The most effective measures for modifications of the existing design are presented and experimental evaluation of its effectiveness is carried out. Special attention is given to definition of vaned diffuser configuration and its hidden reserves. Instrumentation and number of measures required for qualitative estimation of the data obtained are reviewed. Possibility of achieving compromises between pressure rise, efficiency and stability margin.