Analysis and modernization of real gas thermodynamic calculation for turbocompressors and detander units

Aksenov, A.A.; Kozhukhov, Y. V.; Sokolov, Mihail; Simonov, A. M.

doi:10.1051/matecconf/201824509005

Cited by 15 publications

(4 citation statements)

References 2 publications

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“…CFD methods are widely used to calculate turbocompressors [4][5][6][7]. Additionally it is necessary to apply methods of calculating the properties of real gases [8][9][10]. In particular, there are studies by CFD methods of low-flow stages of a centrifugal compressor [11][12][13][14][15][16].…”

Section: Methodsmentioning

confidence: 99%

Research of a Spatial Flow of a Low-Flow Stage of a Svd-22 Centrifugal Compressor by Computational Fluid Dynamics Methods Using Super-Computer Technologies

et al. 2020

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This paper provides the results of the study of a spatial flow in a low-flow stage of a SVD-22 centrifugal compressor of computational fluid dynamics methods using the Ansys CFX 14.0 software package. Low flow stages are used as the last stages of multistage centrifugal compressors. Such multistage compressors are widely used in boosting compressor stations for natural gas, in chemical industries. The flow features in low-flow stages require independent research. This is due to the fact that the developed techniques for designing centrifugal compressor stages are created for medium-flow and high-flow stages and do not apply to low-flow stages. 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 conducted on one of the SPbPU clusters. Parameters of one cluster node: AMD Opteron 280 2 cores, 8GB RAM. The calculations were conducted using 4 nodes (HP MPI Distributed Parallel startup type) with their full load by parallelizing processes on each node.

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Section: Methodsmentioning

confidence: 99%

Research of a Spatial Flow of a Low-Flow Stage of a Svd-22 Centrifugal Compressor by Computational Fluid Dynamics Methods Using Super-Computer Technologies

et al. 2020

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“…The study was carried out on a real prototype stage centrifugal compressor, using the software package ANSYS. The calculation involved the detailed spatial computer model use with a grid of discretization [2][3][4][5][6][7][8][9][10][11] necessary for solving this problem, and real gas parameters [12] were used as working fluid, which directly leads to the increase in the results obtained accuracy. The gas composition is shown in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Contamination effects study in the centrifugal compressor flow stage by means of numerical simulation methods

et al. 2019

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At the moment there is no effective way to clean the flow of the turbine unit, which is justified from an economic point of view. It is important to understand how deposits affect compressor performance and the need to clean out contaminants. In the available literature, such studies are not described. The computational model of a stage domain for the study includes the following elements: inlet pipe, impeller, bladeless diffuser, swivel elbow, backward guide apparatus, outlet pipe. For calculations, the computational fluid dynamics methods in the Ansys software package were used. A numerical experiment was carried out in six mass flow rate variants, two impeller revolutions variants, and three different sediment thicknesses in the flow part variants. Based on the numerical experiment results, the calculated machine operating modes characteristics are constructed. The analysis revealed that the studied deposits cause a drop in the stage characteristics by 1.5-2%. Losses in the stage increase proportionately to the thickness of deposits in the compressor flow part.

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“…The calculations of the thermodynamic properties of the working medium are based on the equations of thermodynamic calculation of the BIE (equation of state of Benedict, Webb, Rubin) and its modifications [13]. Modifications are based on the approach of using the equation of state [14]:…”

Section: Key Work Modelsmentioning

confidence: 99%

An architectural approach to process control of gas compressor stations with a low temperature separation gas preparation unit based on a digital twin

et al. 2019

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This article lists a part of a study of possibilities of using and integrating digital twins of the existing high-tech enterprise processes on the examples of a high-pressure gas compressor station and a gas treatment plant using low-temperature separation of an oil and gas enterprise using an architectural approach. The need for the use of digital twins (DT) in the high-tech industry is due to the inability to effectively conduct full-scale tests to select the necessary operating modes in the implementation framework of technological processes with varying parameters (high cost and increased resource consumption compared to the creation of a DT). The main difference between DT and conventional models is the three-dimensional matrix of input variable parameters that can be given to DT for processing in order to obtain the most correct output data when performing simulations. At the same time, millions of operational cycles can be generated in real time, which allows us to most effectively solve various business problems. For example, the task of finding optimal solutions and prototype configurations under study.

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Analysis and modernization of real gas thermodynamic calculation for turbocompressors and detander units

Cited by 15 publications

References 2 publications

Research of a Spatial Flow of a Low-Flow Stage of a Svd-22 Centrifugal Compressor by Computational Fluid Dynamics Methods Using Super-Computer Technologies

Research of a Spatial Flow of a Low-Flow Stage of a Svd-22 Centrifugal Compressor by Computational Fluid Dynamics Methods Using Super-Computer Technologies

Contamination effects study in the centrifugal compressor flow stage by means of numerical simulation methods

An architectural approach to process control of gas compressor stations with a low temperature separation gas preparation unit based on a digital twin

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