Unsteady Aerodynamics of a Centrifugal Compressor Stage: Validation of Two Different CFD Solvers

Oliver Borm, Hans-Peter Kau

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

Abstract

The unsteady flow field of a centrifugal compressor stage with vaned diffuser has been numerically investigated. Three dimensional steady as well as unsteady numerical simulations have been carried out with the CFD programs Numeca and OpenFOAM. The investigated numerical approaches range from a steady state mixing-plane simulation to an unsteady full annulus 360° computation. The numerical investigation was done at 80% design speed with the Spalart-Allmaras as well as the k-w SST turbulence model. All numerical simulations were compared to the experiments in the compressor map. The velocity field of one operating point near the surge line was analysed in more detail. Similarities and differences between numerical and experimental results are discussed and their causes and effects pointed out.
Original languageEnglish
Title of host publicationTurbo : Poweer for Land, Sea and Air
Subtitle of host publicationASME Turbo Expo 2012: Turbine Technical Conference and Exposition
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages12
Volume8
ISBN (Print)978-0-7918-4474-8
DOIs
Publication statusPublished - 2012
EventASME Turbo Expo 2012 - Kopenhagen, Denmark
Duration: 13 Jun 201215 Jun 2012

Conference

ConferenceASME Turbo Expo 2012
Country/TerritoryDenmark
CityKopenhagen
Period13/06/1215/06/12

Fields of Expertise

  • Sonstiges

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