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Similarities and differences concerning flow characteristics in centrifugal compressors of different size
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Processteknisk strömningsmekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Skolan för industriell teknik och management (ITM), Centra, Competence Center for Gas Exchange (CCGEx).
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Processteknisk strömningsmekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Skolan för industriell teknik och management (ITM), Centra, Competence Center for Gas Exchange (CCGEx).ORCID-id: 0000-0001-7715-863X
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Processteknisk strömningsmekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Skolan för industriell teknik och management (ITM), Centra, Competence Center for Gas Exchange (CCGEx).ORCID-id: 0000-0001-7330-6965
2016 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The appropriate choice of an automotive turbocharger compressor for an internal combustion engine is based on the compressor performance, which is commonly specified on a compressor map for different operating conditions. A wide operating range for the compressor covering all possible engine working conditions is desired. However, the application range of the compressor is limited. Different compressor designs are used to fit specific engine requirements. Naturally, these will have rather different characteristic compressor maps. The aim of the present investigation is to explain the differences in the compressor maps by analyzing the compressible flow-fields in two compressor designs from the same manufacturer, intended for a light-duty vehicle (passenger car). The flow-fields are assessed by steady-state Reynolds Averaged Navier-Stokes (RANS) simulations for several operating conditions. Similar flow features are observed near optimal efficiency operating conditions when the flow-field parameters are scaled properly. This study exposes the reason for the different measured operating ranges of the two compressors when ran at the same speed lines.

sted, utgiver, år, opplag, sider
Springer, 2016.
Serie
Springer Proceedings in Physics, ISSN 0930-8989 ; 185
Emneord [en]
Centrifugal Compressor, Turbocharger, Fuel Efficiency
HSV kategori
Forskningsprogram
Flyg- och rymdteknik; Energiteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-171231DOI: 10.1007/978-3-319-30602-5_57ISI: 000387431400057Scopus ID: 2-s2.0-84979080235ISBN: 978-331930600-1 (tryckt)OAI: oai:DiVA.org:kth-171231DiVA, id: diva2:842964
Konferanse
International Conference on Jets, Wakes and Separated Flows ( ICJWSF2015)
Forskningsfinansiär
Swedish Energy Agency
Merknad

QC 20150805

Tilgjengelig fra: 2015-07-24 Laget: 2015-07-24 Sist oppdatert: 2016-12-22bibliografisk kontrollert

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Semlitsch, BernhardMihaescu, Mihai

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