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  3. Numerical optimization and manufacturing of the impeller of a centrifugal compressor by variation of splitter blades
Numerical optimization and manufacturing of the impeller of a centrifugal compressor by variation of splitter blades
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Numerical optimization and manufacturing of the impeller of a centrifugal compressor by variation of splitter blades

Moussavi Torshizi, S. A

Numerical optimization and manufacturing of the impeller of a centrifugal compressor by variation of splitter blades

Moussavi Torshizi, S. A ; Sharif University of Technology

849 Viewed
  1. Type of Document: Article
  2. DOI: 10.1115/GT2016-57105
  3. Publisher: American Society of Mechanical Engineers (ASME)
  4. Abstract:
  5. Design and optimization of centrifugal compressors, based on main blades configuration of impeller have been vastly discussed in open literature, but less researches have addressed splitters. In this research, the impeller of a commercial turbocharger compressor is investigated. Here, profiles of main blades are not changed while the effect of changing the configuration of splitters is studied. An optimization study is performed to find the best configuration using genetic algorithm over a complete operating curve of the compressor. CFD codes with experimental support are used to predict the compressor performance. Quantumetric tests beside destructive analysis of two impellers are implemented for material identification and selection which is necessary for manufacturing. After taking into account structural considerations and approving the safety by numerical simulation, the new impeller is manufactured using 5 axis CNC machine. Non destructive tests are performed for identification of any structural defects. The new impeller is then mounted on a turbocharger shaft and tested experimentally in a wide range of operating conditions, which leads to a design having 2.3% improvement in efficiency. This is an important achievement in all applications of centrifugal compressors, especially in turbochargers
  6. Keywords:
  7. Centrifugation ; Compressors ; Computational fluid dynamics ; Computer control systems ; Curve fitting ; Genetic algorithms ; Impellers ; Manufacture ; Nondestructive examination ; Optimization ; Steam turbines ; Superchargers ; Turbines ; Turbomachinery ; Compressor performance ; Design and optimization ; Destructive analysis ; Material identification ; Non-destructive test ; Numerical optimizations ; Optimization studies ; Turbocharger compressor ; Centrifugal compressors
  8. Source: ASME Turbo Expo 2016, Turbomachinery Technical Conference and Exposition, 13 June 2016 through 17 June 2016 ; Volume 8 , 2016 ; 9780791849866 (ISBN)
  9. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2555550