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Tim Wittmann, Sebastian Lück, Christoph Bode and Jens Friedrichs
Radial turbines used in automotive fuel cell turbochargers operate with humid air. The gas expansion in the turbine causes droplets to form, which then grow through condensation. The associated release of latent heat and decrease in the gaseous mass flow...
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Johannes Bühler, Sebastian Leichtfuß, Heinz-Peter Schiffer, Thomas Lischer and Simon Raabe
Compressor surge has been investigated and predicted since the early days of turbomachinery research. Experimental testing of turbomachinery applications is still needed to determine whether stable compressor operation is possible in the expected applica...
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Sebastian Leichtfuß, Johannes Bühler, Heinz-Peter Schiffer, Patrick Peters and Michael Hanna
This paper provides an investigation of a casing treatment (CT) approach for pressure ratio improvements of centrifugal compressors between peak efficiency and surge. Results were experimentally verified for a variety of automotive turbocharger compresso...
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Marco Berchiolli, Gregory Guarda, Glen Walsh and Apostolos Pesyridis
In a previous paper, a preliminary design methodology was proposed for the design of an axial turbine, replacing a conventional radial turbine used in automotive turbochargers, to achieve improved transient response, due to the intrinsically lower moment...
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