Abstract
The centrifugal compressor has been widely used in low power gas turbine, supercharger and industrial turbine compressors. Due to its outstanding advantages of simple process, compact structure and wide working range, it is more advantageous in some aspects such as small flow range than counterparts. However, the design of important components of centrifugal compressor requires lots of design experience and consideration. Because of the deepening research of the industrial centrifugal compressor, some excellent design optimization methods and experiences are obtained from researchers. In order to enable designers to get the preliminary design parameters and to develop a compressor with better performance better and faster, this paper addresses the main design optimization methods and design experiences of the components of the industrial centrifugal compressor. The detailed design considerations and design process for centrifugal compressor can reduce the design cycle time without scarifying performance for the new design. The purpose of this paper is to provide some design considerations and experiences of the centrifugal compressor for researchers. According to the centrifugal compressor design optimization process, purposed considerations in this paper are useful for compressor preliminary parameters selections. The optimizations and design considerations in this paper provide a detailed reference document for future centrifugal compressor developments.
Highlights
With the advances of technology and the needs of industrial production for the past few years, the centrifugal compressor is widely used in the field of aerospace, auto industry, petrochemical industry and so on, which is because of its high reliability, small size and other advantages
The design process has been greatly simplified for the industry centrifugal compressor in using existing design tools, there are enormous difficulties that should be considered
In the whole design process, one-dimensional dynamics design, three-dimensional modelling design, Computational Fluid Dynamics (CFD) numerical simulation and other works should be applied by commercial software to assure the stability and high performance
Summary
With the advances of technology and the needs of industrial production for the past few years, the centrifugal compressor is widely used in the field of aerospace, auto industry, petrochemical industry and so on, which is because of its high reliability, small size and other advantages. Because of the complexity of flow, matching requirements of multiple conditions and structural constraints, the perfect design and great performance of a centrifugal compressor does rely on simple estimation or a certain optimization of the component, and needs to iterate some important consideration. The centrifugal compressor is developing rapidly in the direction of larger impeller diameter, higher impeller flow coefficient, wider and larger efficient function range, higher single-stage pressure ratio, lower leakage ratio, higher aerodynamic efficiency, more standardized components and so on. The main aerodynamic problems of multistage compressor and turbine are whether the compressor’s overall operating range and efficiency can meet the design requirements and all stages’ flow are matched. After preliminary design parameters are selected, including inlet and outlet diameter or trim number, blade outlet angle, tip clearance and so on, computational fluid dynamics tools can complete more detailed design. This paper will introduce the influence factors in the optimization process and some research progress
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