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Numerical study of slip factor model, effect of inlet total pressure and gas composition on the performance curve of centrifugal compressor

Aligooda, M. R ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2011-65881
  3. Abstract:
  4. Development of hardware and CFD codes, especially in turbulence model and optimization of numerical codes has led to increment in usage of CFD which is capable of simulating different experimental situations take place at laboratory. Particularly in issues related to turbo machinery, twodimensional test of blades, three-dimensional investigation of different stages and studying the effect of different parameters are very costly. By means of CFD modeling all these issues are accessible. Actual flow within the compressor is three dimensional and fully turbulent due to geometry complexity, flow velocity and viscosity. For this reason it has become more and more popular to perform 3D numerical studies. In this study three-dimensional analysis of flow in a two stage centrifugal compressor is performed. Since no experimental data is available to evaluate the results of the present numerical analysis, validation is done by using experimental data of the: gas turbine set up at Sharif University of Technology Laboratory. Numerical results arc used for the evaluation of the slip factor models and finally, the effects of inlet gas composition and inlet total pressure on characteristic map are investigated
  5. Keywords:
  6. CFD codes ; CFD modeling ; Gas compositions ; Geometry complexity ; Inlet gas composition ; Numerical code ; Numerical results ; Performance curve ; Slip factor ; Three-dimensional analysis ; Total pressure ; Two-dimensional tests ; University of Technology ; Centrifugal compressors ; Exhibitions ; Mechanical engineering ; Numerical analysis ; Three dimensional ; Turbulence models ; Computational fluid dynamics
  7. Source: ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 ; Volume 1 , 2011 , Pages 885-895 ; 9780791854877 (ISBN)
  8. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1642261