Numerical Simulation of the Performance of a Twin Scroll Radial Turbine at Different Operating Conditions
Joint Authors
Cravero, Carlo
De Domenico, Davide
Ottonello, Andrea
Source
International Journal of Rotating Machinery
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-02
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Twin scroll radial turbines are increasingly used for turbocharging applications, to take advantage of the pulsating exhaust gases.
In spite of its relevance in turbocharging techniques, scientific literature about CFD applied to twin scroll turbines is limited, especially in case of partial admission.
In the present paper a CFD complete model of a twin scroll radial turbine is developed in order to give a contribution to literature in understanding the capabilities of current industrial CFD approaches applied to these difficult cases and to develop performance index that can be used for turbine design optimization purposes.
The flow solution is obtained by means of ANSYS CFX ® in a wide range of operating conditions in full and partial admission cases.
The total-to-static efficiency and the mass flow parameter (MFP) have been calculated and compared with the experimental database in order to validate the numerical model.
The purpose of the developed procedure is also to generate a database for twin scroll turbines useful for future applications.
A comparison between performances obtained in different admission conditions was performed.
In particular the analysis focused on the characterization of the flow at volute outlet/rotor inlet section.
A flow distortion index at rotor inlet was introduced to correlate the turbine performance and the flow nonuniformities generated by the volute.
Finally the influence of the backside cavity on the performance parameters is also discussed.
The introduction of these new nonuniformity indices is proposed for volute design and optimization procedures.
American Psychological Association (APA)
Cravero, Carlo& De Domenico, Davide& Ottonello, Andrea. 2019. Numerical Simulation of the Performance of a Twin Scroll Radial Turbine at Different Operating Conditions. International Journal of Rotating Machinery،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1168549
Modern Language Association (MLA)
Cravero, Carlo…[et al.]. Numerical Simulation of the Performance of a Twin Scroll Radial Turbine at Different Operating Conditions. International Journal of Rotating Machinery No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1168549
American Medical Association (AMA)
Cravero, Carlo& De Domenico, Davide& Ottonello, Andrea. Numerical Simulation of the Performance of a Twin Scroll Radial Turbine at Different Operating Conditions. International Journal of Rotating Machinery. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1168549
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168549