The Design of a Family of Process Compressor Stages

Abstract

The design of a new family of process compressor stages is described. The paper discusses the choice of master and derived stages to cover the required flow range and provides guidelines for the design of the stage components, including the impeller, diffuser and the return channel. Details are given of the mechanical and aerodynamic design process and the computational tools used for this. The test results show that the performance objectives have been achieved. Results from testing of some of the stages are compared with CFD simulations. These show that the inclusion of real geometry features, such as the shroud and hub leakage paths and the end-wall fillets, is necessary to obtain good agreement with the measured performance. INTRODUCTIONMultistage industrial process compressors are designed to cover a wide range of volume flows, pressure ratios and gas properties for many different applications. In-line compressors are tailormade from standard designs to meet the individual customer's requirements, and to customize them to the specification, changes are introduced in the impeller diameters, number of stages, stage types,

Design, Plant Test and CFD Calculation of a Turbocharger for a Low-Speed Engine

“…The SST turbulence model and the ANSYS CFX program were used. Calculated and test data comparison demonstrated significant overestimation of the calculated pressure ratio and a shift of the calculated characteristics to the right, which is typical for a number of other comparisons of CFD calculations with experiments [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. We can also observe unusually large overestimation of calculated efficiency.…”