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Centrifugal compressor of a 100 kW microturbine: Part 1 - Experimental and numerical investigations on overall performance
Department of Mechanical Engineering, University of Padova.
Department of Mechanical Engineering, University of Padova.
2003 (engelsk)Inngår i: Proceedings of the ASME Turbo Expo 2003: presented at the 2003 ASME Turbo Expo, June 16 - 19, 2003, Atlanta, Georgia, New York: American Society of Mechanical Engineers , 2003, Vol. 3 : Cycle innovations. Marine. Manufacturing materials and metallurgy. Microturbines and small turbomachinery, s. 691-698Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

This paper describes on/off design performance of a centrifugal compressor of a 100 kW turbogenerator gas turbine engine used for small scale power generation. The compressor stage is made up of a radial impeller and a two-stage diffuser (radial and deswirl). Pan 1 deals with the experimental and numerical tests on overall compressor and diffuser performance: An extensive test series with steady probe measurements at impeller exit and diffuser exit is performed at different operating points and rotational speeds. This makes it possible to characterize both overall compressor and diffuser. The numerical model is based on a mixing plane at impeller-diffuser interface and therefore neglects the effect of unsteadiness due to rotor-stator interaction. Then, in part 2 the true time-dependent interaction is investigated by means of a numerical model where a sliding mesh technique is adopted. The unsteady results are then processed and compared with the steady ones regarding the flow in the diffuser. Finally, in part 3 the geometry of the compressor diffuser is optimized using an evolutionary algorithm coupled with a CFD code in order to improve compressor performance.

sted, utgiver, år, opplag, sider
New York: American Society of Mechanical Engineers , 2003. Vol. 3 : Cycle innovations. Marine. Manufacturing materials and metallurgy. Microturbines and small turbomachinery, s. 691-698
Identifikatorer
URN: urn:nbn:se:ltu:diva-39406DOI: 10.1115/GT2003-38152Scopus ID: 346327101Lokal ID: e277937e-e4a7-4777-86f4-ddce104e0157ISBN: 0-7918-3686-X (tryckt)OAI: oai:DiVA.org:ltu-39406DiVA, id: diva2:1012917
Konferanse
ASME Turbo Expo 2003 : 16/06/2003 - 19/06/2003
Merknad
Upprättat; 2012; 20120625 (andbra)Tilgjengelig fra: 2016-10-03 Laget: 2016-10-03 Sist oppdatert: 2017-11-25bibliografisk kontrollert

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