Computational Analysis of the Performance Characteristics of a Supercritical CO2 Centrifugal Compressor
Abstract
:1. Introduction
2. Materials and Methods
2.1. Real Gas Property Table
2.2. Compressor Geometry and Mesh
2.3. Numerical Methodology
3. Validation
4. Results and Discussion
4.1. Effect of Tip Clearance
4.2. Effect of Diffuser
4.3. Flow Field Near the Impeller and Diffuser Interface
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Number of main blades | 6 | Blade thickness at impeller trailing edge | 0.762 mm |
Number of splitter blades | 6 | Blade height at impeller leading edge | 1.7 mm |
Impeller inlet radius at hub | 2.537585 mm | Blade angle of the impeller leading edge at hub | 17.88 |
Impeller inlet radius at shroud | 9.372047 mm | Blade angle of the impeller leading edge at mean radius | 37.13 |
Impeller exit radius | 18.68170 mm | Blade angle of the impeller leading edge at shroud | 50 |
Full blade length | 25 mm | Blade angle of the impeller trailing edge | –50 |
Splitter blade length | 12.5 mm | Angle between streamlines and shaft at impeller inlet | 0 |
Axial length of the impeller | 15.9 mm | Angle between streamlines and shaft at impeller exit | 90 |
Clearance gap at impeller tip | 0.254 mm | Blade thickness at impeller leading edge | 0.762 mm |
Number of vanes | 17 | Blade height at diffuser exit | 1.8 mm |
Diffuser inlet radius | 18.5 mm | Diffuser channel length | 10.6 mm |
Diffuser exit radius | 26.0 mm | Blade thickness at diffuser inlet | 0.0 mm |
Blade angle at diffuser inlet | 71.5 | Blade thickness at diffuser exit | 3.35 mm |
Blade height at diffuser inlet | 1.8 mm |
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Raman, S.K.; Kim, H.D. Computational Analysis of the Performance Characteristics of a Supercritical CO2 Centrifugal Compressor. Computation 2018, 6, 54. https://doi.org/10.3390/computation6040054
Raman SK, Kim HD. Computational Analysis of the Performance Characteristics of a Supercritical CO2 Centrifugal Compressor. Computation. 2018; 6(4):54. https://doi.org/10.3390/computation6040054
Chicago/Turabian StyleRaman, Senthil Kumar, and Heuy Dong Kim. 2018. "Computational Analysis of the Performance Characteristics of a Supercritical CO2 Centrifugal Compressor" Computation 6, no. 4: 54. https://doi.org/10.3390/computation6040054