Abstract
This paper presents the results of the study of the spatial flow in the turbocompressors elements of computational fluid dynamics methods using the Ansys CFX software package on a multiprocessor computer system. Five objects of research are considered: 1) flow path of an intermediate stage of an average-flow centrifugal compressor; 2) flow path of the low-flow centrifugal compressor stage; 3) a natural gas centrifugal compressor stage; 4) vaned diffuser of the first stage of an industrial multistage centrifugal compressor; 5) adjustable inlet stator of the first stage of an industrial turbocompressors. Generally at manufacturing new centrifugal compressors, it is impossible to make a control measurement of the parameters of the working process inside the flow path elements. Computational fluid dynamics methods are widely used to overcome this difficulties. However verification and validation of CFD methods are necessary for accurate modeling of the workflow. All calculations were performed on one of the SPbPU clusters. Parameters of one cluster: AMD Opteron 280 4 cores. The calculations were carried out with parallel running of the processors: HP MPI Distributed Parallel and HP MPI Local Parallel for different objects.
Highlights
The essence of the study is to verify the results of modeling the working process in the elements of a centrifugal compressor, obtained using the computation fluid dynamics methods (CFD)
The accumulated data bank is used for verification and validation of CFD methods
Prof., Doctor Hub. at the Department of Compressor, Vacuum and Refrigeration Engineering of SPbPU, under his leadership, field tests were carried out and all the necessary data for the research of the stage were provided by the authors of the article
Summary
The essence of the study is to verify the results of modeling the working process in the elements of a centrifugal compressor, obtained using the computation fluid dynamics methods (CFD). At the Department of Compressor, Vacuum and Refrigeration Engineering (hereinafter referred to as CVRE) of SPbPU were carried out over 500 physical experiments for various elements of the flow path of a centrifugal compressor. The accumulated data bank is used for verification and validation of CFD methods. The work considers 5 different objects for verification
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