Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution

Mykola Kalinkevych

doi:doi:10.11648/j.ijmea.20221004.11

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Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution

Mykola Kalinkevych

Published in International Journal of Mechanical Engineering and Applications (Volume 10, Issue 4)

Received: 5 June 2022 Accepted: 21 June 2022 Published: 4 August 2022

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Abstract

Traditional methods of designing channels of turbomachines are focused on the use of simple geometric lines and surfaces, such as a straight line, arc, plane, cylindrical surface, etc. The design is performed according to recommendations based on experimental data. The other way of designing the channels of turbomachines is related to solving the inverse problem of fluid dynamics, when the shape of the surfaces is determined by the given distribution of velocities along the surfaces of the channel. Of course, channels designed in this way can be more efficient than channels designed by the traditional method. This paper describes the design principles for centrifugal compressor diffusers based on physical and mathematical models of the flow of swirling viscous compressible fluid. According to the presented method, the designing diffusers is based on the preseparation condition of the boundary layer along one of the outer surfaces. Numerical and experimental research was performed for vaned and channel diffusers. Comparison of experimental and design characteristics of diffusers and flow parameters in diffusers confirm the high efficiency of the diffuser, which was designed using the presented method and the adequacy of mathematical models with the physical processes of fluid flow in diffusers. A new method of designing the vaned diffusers and channel diffusers with the predetermined velocity distribution on vane surfaces provides an improvement in the gasdynamic characteristics of diffusers compared to traditional geometry diffusers.

Published in	International Journal of Mechanical Engineering and Applications (Volume 10, Issue 4)
DOI	10.11648/j.ijmea.20221004.11
Page(s)	46-52
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Centrifugal Compressor, Method of the Design, Vaned Diffuser, Channel Diffuser, Research

References

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[2]	Chang, P. (1976). Control of flow separation. Hemisphere Publishing Corporation, 523 p.
[3]	Chen, S., Zuo, S., Wei, K. (2021). Numerical investigation of the centrifugal compressor stability improvement by half vaned low solidity diffusers. Journal of Thermal Science, Vol. 30, 696–706. https://doi.org/10.1007/s11630-021-1318-6.
[4]	Cumpsty, N., Inoue, M. (1984). Experimental study of centrifugal impeller discharge flow in vaneless and vaned diffusers. ASME Journal of Engineering for Gas Turbines and Power, Vol. 106, 455–467.
[5]	Cumpsty, N. Compressor aerodynamics. (2004). Krieger Publishing Company, 552 p.
[6]	Kalinkevych, M., et al. (2011). The design of vaned diffusers of centrifugal compressors based on the given velocity distribution. Institution of Mechanical Engineers (IMechE), 7th International Conference on Compressors and their Systems, City University London, UK, Woodhead Publishing, 61–69.
[7]	Kalinkevych, M., Skoryk, A. (2013). Flow and performance investigation of the specially designed channel diffuser of centrifugal compressor. Institution of Mechanical Engineers (IMechE), 8th International Conference on Compressors and their Systems, City University London, UK, Woodhead Publishing, 489–500.
[8]	Kalinkevych, M., Skoryk, A. (2013). Design method for channel diffusers of centrifugal compressors. International Journal of Rotating Machinery, Vol. 2013. 7 pages, Article ID 589357. (http://www.hindawi.com/journals/ijrm/2013/589357.
[9]	Kalіnkevych, M. (2020). Diffusers of centrifugal compressors. Sumy, «Publishing House «University Book», 135 p. (Калінкевич, М. Дифузори відцентрових компресорів. Суми: ПФ Видавництво «Університетська книга», 2020).
[10]	Loitsyanskii, L. G. (1966). Mechanics of liquids and gases. International Series of Monographs in Aeronautics and Astronautics, Vol. 6, 804 p.
[11]	Qingkuo Li, Zhigang Sun, Xingen Lu, Yingjie Zhang, Ge Han (2022). Investigation of new design principles for the centrifugal compressor vaned diffusers. International Journal of Aerospace Engineering, Vol. 2022, Article ID 4480676, https://doi.org/10.1155/2022/4480676.
[12]	Skoch, G. (2003). Experimental investigation of centrifugal compressor stabilization techniques. ASME Journal Turbomachinery, Vol. 125, 704–713.
[13]	Stanitz, J. D. (1952). One-dimensional compressible flow in vaneless diffusers of radial or mixed-flow centrifugal compressors, including effects of friction. Heat Transfer and Area Change. NACA TN 2610.
[14]	Stanitz, J. D. (1952). Design of two-dimensional channels with prescribed velocity distributions along the channel walls. Report 1115 National advisory committee for aeronautics, Supersedes NACA TN 2593, I – Relaxation solutions and NACA TN 2595, II – Solution by Green’s function, 153–192.
[15]	Stratford, B. (1959). The prediction of separation of the turbulent boundary layer. Journal Fluid Mechanics, Vol. 5 (1), 1–16.
[16]	Stratford, B. (1959). An experimental flow with zero skin friction throughout its region of pressure rise. Journal Fluid Mechanics, Vol. 5, 17-35.
[17]	Townsend, A. (1959). The development of turbulent boundary layers with negligible wall stress. Cambridge University Press, 143–155.

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APA Style

Mykola Kalinkevych. (2022). Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution. International Journal of Mechanical Engineering and Applications, 10(4), 46-52. https://doi.org/10.11648/j.ijmea.20221004.11

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ACS Style

Mykola Kalinkevych. Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution. Int. J. Mech. Eng. Appl. 2022, 10(4), 46-52. doi: 10.11648/j.ijmea.20221004.11

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AMA Style

Mykola Kalinkevych. Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution. Int J Mech Eng Appl. 2022;10(4):46-52. doi: 10.11648/j.ijmea.20221004.11

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@article{10.11648/j.ijmea.20221004.11,
  author = {Mykola Kalinkevych},
  title = {Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {10},
  number = {4},
  pages = {46-52},
  doi = {10.11648/j.ijmea.20221004.11},
  url = {https://doi.org/10.11648/j.ijmea.20221004.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20221004.11},
  abstract = {Traditional methods of designing channels of turbomachines are focused on the use of simple geometric lines and surfaces, such as a straight line, arc, plane, cylindrical surface, etc. The design is performed according to recommendations based on experimental data. The other way of designing the channels of turbomachines is related to solving the inverse problem of fluid dynamics, when the shape of the surfaces is determined by the given distribution of velocities along the surfaces of the channel. Of course, channels designed in this way can be more efficient than channels designed by the traditional method. This paper describes the design principles for centrifugal compressor diffusers based on physical and mathematical models of the flow of swirling viscous compressible fluid. According to the presented method, the designing diffusers is based on the preseparation condition of the boundary layer along one of the outer surfaces. Numerical and experimental research was performed for vaned and channel diffusers. Comparison of experimental and design characteristics of diffusers and flow parameters in diffusers confirm the high efficiency of the diffuser, which was designed using the presented method and the adequacy of mathematical models with the physical processes of fluid flow in diffusers. A new method of designing the vaned diffusers and channel diffusers with the predetermined velocity distribution on vane surfaces provides an improvement in the gasdynamic characteristics of diffusers compared to traditional geometry diffusers.},
 year = {2022}
}

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TY  - JOUR
T1  - Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution
AU  - Mykola Kalinkevych
Y1  - 2022/08/04
PY  - 2022
N1  - https://doi.org/10.11648/j.ijmea.20221004.11
DO  - 10.11648/j.ijmea.20221004.11
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 46
EP  - 52
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20221004.11
AB  - Traditional methods of designing channels of turbomachines are focused on the use of simple geometric lines and surfaces, such as a straight line, arc, plane, cylindrical surface, etc. The design is performed according to recommendations based on experimental data. The other way of designing the channels of turbomachines is related to solving the inverse problem of fluid dynamics, when the shape of the surfaces is determined by the given distribution of velocities along the surfaces of the channel. Of course, channels designed in this way can be more efficient than channels designed by the traditional method. This paper describes the design principles for centrifugal compressor diffusers based on physical and mathematical models of the flow of swirling viscous compressible fluid. According to the presented method, the designing diffusers is based on the preseparation condition of the boundary layer along one of the outer surfaces. Numerical and experimental research was performed for vaned and channel diffusers. Comparison of experimental and design characteristics of diffusers and flow parameters in diffusers confirm the high efficiency of the diffuser, which was designed using the presented method and the adequacy of mathematical models with the physical processes of fluid flow in diffusers. A new method of designing the vaned diffusers and channel diffusers with the predetermined velocity distribution on vane surfaces provides an improvement in the gasdynamic characteristics of diffusers compared to traditional geometry diffusers.
VL  - 10
IS  - 4
ER  -

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Author Information

Mykola Kalinkevych

Institute of Applied Physics, National Academy of Sciences of Ukraine, Sumy, Ukraine

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Plain Text BibTeX RIS

APA Style

Mykola Kalinkevych. (2022). Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution. International Journal of Mechanical Engineering and Applications, 10(4), 46-52. https://doi.org/10.11648/j.ijmea.20221004.11

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ACS Style

Mykola Kalinkevych. Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution. Int. J. Mech. Eng. Appl. 2022, 10(4), 46-52. doi: 10.11648/j.ijmea.20221004.11

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AMA Style

Mykola Kalinkevych. Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution. Int J Mech Eng Appl. 2022;10(4):46-52. doi: 10.11648/j.ijmea.20221004.11

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@article{10.11648/j.ijmea.20221004.11,
  author = {Mykola Kalinkevych},
  title = {Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution},
  journal = {International Journal of Mechanical Engineering and Applications},
  volume = {10},
  number = {4},
  pages = {46-52},
  doi = {10.11648/j.ijmea.20221004.11},
  url = {https://doi.org/10.11648/j.ijmea.20221004.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmea.20221004.11},
  abstract = {Traditional methods of designing channels of turbomachines are focused on the use of simple geometric lines and surfaces, such as a straight line, arc, plane, cylindrical surface, etc. The design is performed according to recommendations based on experimental data. The other way of designing the channels of turbomachines is related to solving the inverse problem of fluid dynamics, when the shape of the surfaces is determined by the given distribution of velocities along the surfaces of the channel. Of course, channels designed in this way can be more efficient than channels designed by the traditional method. This paper describes the design principles for centrifugal compressor diffusers based on physical and mathematical models of the flow of swirling viscous compressible fluid. According to the presented method, the designing diffusers is based on the preseparation condition of the boundary layer along one of the outer surfaces. Numerical and experimental research was performed for vaned and channel diffusers. Comparison of experimental and design characteristics of diffusers and flow parameters in diffusers confirm the high efficiency of the diffuser, which was designed using the presented method and the adequacy of mathematical models with the physical processes of fluid flow in diffusers. A new method of designing the vaned diffusers and channel diffusers with the predetermined velocity distribution on vane surfaces provides an improvement in the gasdynamic characteristics of diffusers compared to traditional geometry diffusers.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - Design of the Centrifugal Compressor Vaned and Channel Diffusers Based on the Given Velocity Distribution
AU  - Mykola Kalinkevych
Y1  - 2022/08/04
PY  - 2022
N1  - https://doi.org/10.11648/j.ijmea.20221004.11
DO  - 10.11648/j.ijmea.20221004.11
T2  - International Journal of Mechanical Engineering and Applications
JF  - International Journal of Mechanical Engineering and Applications
JO  - International Journal of Mechanical Engineering and Applications
SP  - 46
EP  - 52
PB  - Science Publishing Group
SN  - 2330-0248
UR  - https://doi.org/10.11648/j.ijmea.20221004.11
AB  - Traditional methods of designing channels of turbomachines are focused on the use of simple geometric lines and surfaces, such as a straight line, arc, plane, cylindrical surface, etc. The design is performed according to recommendations based on experimental data. The other way of designing the channels of turbomachines is related to solving the inverse problem of fluid dynamics, when the shape of the surfaces is determined by the given distribution of velocities along the surfaces of the channel. Of course, channels designed in this way can be more efficient than channels designed by the traditional method. This paper describes the design principles for centrifugal compressor diffusers based on physical and mathematical models of the flow of swirling viscous compressible fluid. According to the presented method, the designing diffusers is based on the preseparation condition of the boundary layer along one of the outer surfaces. Numerical and experimental research was performed for vaned and channel diffusers. Comparison of experimental and design characteristics of diffusers and flow parameters in diffusers confirm the high efficiency of the diffuser, which was designed using the presented method and the adequacy of mathematical models with the physical processes of fluid flow in diffusers. A new method of designing the vaned diffusers and channel diffusers with the predetermined velocity distribution on vane surfaces provides an improvement in the gasdynamic characteristics of diffusers compared to traditional geometry diffusers.
VL  - 10
IS  - 4
ER  -

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