Design and Numerical Analysis of Flow Characteristics in a Scaled Volute and Vaned Nozzle of Radial Turbocharger Turbines

Andrés Omar Tiseira Izaguirre, Roberto Navarro García, Lukas Benjamin Inhestern and Natalia Hervás Gómez
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Andrés Omar Tiseira Izaguirre: CMT Motores Térmicos, Universitat Politècnica de València, 46022 València, Spain
Roberto Navarro García: CMT Motores Térmicos, Universitat Politècnica de València, 46022 València, Spain
Lukas Benjamin Inhestern: CMT Motores Térmicos, Universitat Politècnica de València, 46022 València, Spain
Natalia Hervás Gómez: CMT Motores Térmicos, Universitat Politècnica de València, 46022 València, Spain

Energies, 2020, vol. 13, issue 11, 1-19

Abstract: Over the past few decades, the aerodynamic improvements of turbocharger turbines contributed significantly to the overall efficiency augmentation and the advancements in downsizing of internal combustion engines. Due to the compact size of automotive turbochargers, the experimental measurement of the complex internal aerodynamics has been insufficiently studied. Hence, turbine designs mostly rely on the results of numerical simulations and the validation of zero-dimensional parameters as efficiency and reduced mass flow. To push the aerodynamic development even further, a precise validation of three-dimensional flow patterns predicted by applied computational fluid dynamics (CFD) methods is in need. This paper presents the design of an up-scaled volute-stator model, which allows optical experimental measurement techniques. In a preliminary step, numerical results indicate that the enlarged geometry will be representative of the flow patterns and characteristic non-dimensional numbers at defined flow sections of the real size turbine. Limitations due to rotor-stator interactions are highlighted. Measurement sections of interest for available measurement techniques are predefined.

Keywords: turbocharging; turbine; aerodynamics; CFD; volute; nozzled vane; losses (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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