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Turbine performance studies for automotive turbochargers part two: unsteady analysis

A., Romagnoli and R. F., Martinez-Botas and Rajoo, Srithar (2010) Turbine performance studies for automotive turbochargers part two: unsteady analysis. In: 9th International Conference on Turbocharger and Turbocharging (Peringkat Antarabangsa), 19-20 May 2010, London.

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This paper presents the results of an experimental investigation conducted on different turbine designs for an automotive turbocharger. The design progression was based on a commercial nozzleless unit that was modified into a variable geometry single and twin entry turbine. The main geometrical parameters were kept constant for all the configurations and the turbine was tested under steady and pulsating flow conditions. The steady flow results and analysis is presented in the Part I of this paper, Romagnoli et al. [1]. This part of the paper will discuss on the details of the unsteady experimentation, analysis and results. The unsteady curves of the turbines of different designs showed the conventional looping characteristics representing filling and emptying effects. The unsteady testing on the turbines showed a bigger departure of the nozzled turbine from the steady curve than the nozzleless. The turbine performance for "in-phase" and "out-of-phase" mode was also measured and compared to single entry configurations.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:automotive, Turbine performance, automotive turbochargers
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:24390
Deposited By: Mrs Liza Porijo
Deposited On:27 Sep 2012 08:18
Last Modified:28 Aug 2017 04:27

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