IGTC-65 Performances of Radial Inflow-Turbines for Exhaust Gas Turbochargers Under Nonsteady Flow Conditions(Session C-8 TURBOCHARGERS II)

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概要

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• This paper deals with unsteady performances of a small radial inward flow turbine for a exhaust gas turbocharger. The time-averaged characteristics of a pulse system turbine for a Diesel engine were studied. The experimental results showed that the characteristics of the turbine vary significantly with the amplitude of pulsation but not with the frequency and hence their variation can be estimated using the non-dimensionalized amplitudes of the gas velocity fluctuation at the turbine scroll inlet. The turbine characteristics. the mass flow rate and the power output. were simulated by a method which is based on the one-dimensional equivalent nozzle analogy taking the pressure rise during the windage state and the velocity amplitude into account. The results of the simulation were in good agreement with measured values under both steady and unsteady flow conditions. Furthermore, it was shown that the time-averaged characteristics can be estimated satisfactorily by the quasi-steady analysis.

• 公益社団法人日本ガスタービン学会の論文

著者

• Yoshiki H.

  Institute of Industrial Science, University of Tokyo

• Konishi K.

  Tokyo Metropolitan Institute Of Technology

• Tashiro S.

  Tokyo Metropolitan Institute of Technology

関連論文

• IGTC-24 Performance of Radial Exhaust Turbine Driven by Pulsating Flow(Session A-7 UNSTEADY AERODYNAMICS I)
• IGTC-65 Performances of Radial Inflow-Turbines for Exhaust Gas Turbochargers Under Nonsteady Flow Conditions(Session C-8 TURBOCHARGERS II)

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