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임펠러의 유로 면적비가 2차원 원심압축기의 성능에 미치는 영향Effect of the Passage Area Ratio of an Impeller on the Performance of Two-Dimensional Centrifugal Compressors
- Other Titles
- Effect of the Passage Area Ratio of an Impeller on the Performance of Two-Dimensional Centrifugal Compressors
- Issue Date
- 2008
- Publisher
- 한국유체기계학회
- Keywords
- Micro Gas Turbine(마이크로 가스터빈); Two-dimensional Centrifugal Compressors(2차원 원심압축기); Passage Area Ratio(유로면적비); CFD(전산유체역학)
- Citation
- 한국유체기계학회 논문집, v.11, no.5, pp.22 - 29
- Indexed
- KCI
- Journal Title
- 한국유체기계학회 논문집
- Volume
- 11
- Number
- 5
- Start Page
- 22
- End Page
- 29
- ISSN
- 2287-9706
- Abstract
- This study is performed to understand the effect of the variation in the passage area of a two-dimensional impeller on its performance characteristics. We observe the results with changing the area ratio of inlet to outlet about 1～2.8. A comparison between the experimental and numerical results was performed for the same configuration in order to verify the reliability of the CFD code. Overall characteristics in the passages of impeller were analyzed in detail including streamline, Mach number, pressure and polytropic efficiency distribution. When the passage area ratio exceeds 2, the pressure ratio is high. An area ratio of 2.3 showed the highest efficiency. The results will be used as useful reference data to establish the design concept of two-dimensional impeller and to improve its performance.
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