Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Autoren

Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Titel des SammelwerksTurbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery
Herausgeber (Verlag)American Society of Mechanical Engineers(ASME)
ISBN (elektronisch)9780791884935
PublikationsstatusVeröffentlicht - 16 Sept. 2021
VeranstaltungASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, GT 2021 - Virtual, Online
Dauer: 7 Juni 202111 Juni 2021

Publikationsreihe

NameProceedings of the ASME Turbo Expo
Band2D-2021

Abstract

Exhaust hoods with an integrated axial-radial diffuser use the kinetic energy downstream of a turbine for static pressure recovery. This is especially useful in applications with limited axial space behind the turbine. So far, such exhaust hoods have been used almost exclusively in larger turbomachinery such as maritime turbochargers and steam turbines, where an axial turbine is typically installed. In combination with an axial turbine, an exhaust hood can result in a very powerful and space-efficient turbine design, especially under highly pulsating inflow conditions. Both are important requirements for automotive turbochargers. Therefore, the application of such an exhaust hood in a small automotive turbocharger is investigated in this paper; this turbocharger also uses an axial turbine. In the first step, a preliminary design is developed, based on a design approach for steam turbine exhaust hoods. The resulting design is examined with a 3D CFD model to determine efficiency and turbine performance. Subsequently, the design is improved by modifying the exhaust hood geometry such as to further improve the overall efficiency of the turbine. Finally, the CFD evaluation for the operating point investigated reveals an increased power output and a higher overall turbine efficiency compared to the initial design. A resulting design guideline for exhaust hoods with an integrated axial-radial diffuser is included.

ASJC Scopus Sachgebiete

Zitieren

Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine. / Kuestner, Christoph; Seume, Joerg R.
Turbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery. American Society of Mechanical Engineers(ASME), 2021. V02DT36A004 (Proceedings of the ASME Turbo Expo; Band 2D-2021).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Kuestner, C & Seume, JR 2021, Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine. in Turbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery., V02DT36A004, Proceedings of the ASME Turbo Expo, Bd. 2D-2021, American Society of Mechanical Engineers(ASME), ASME Turbo Expo 2021, Virtual, Online, 7 Juni 2021. https://doi.org/10.1115/GT2021-58600
Kuestner, C., & Seume, J. R. (2021). Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine. In Turbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery Artikel V02DT36A004 (Proceedings of the ASME Turbo Expo; Band 2D-2021). American Society of Mechanical Engineers(ASME). https://doi.org/10.1115/GT2021-58600
Kuestner C, Seume JR. Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine. in Turbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery. American Society of Mechanical Engineers(ASME). 2021. V02DT36A004. (Proceedings of the ASME Turbo Expo). doi: 10.1115/GT2021-58600
Kuestner, Christoph ; Seume, Joerg R. / Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine. Turbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery. American Society of Mechanical Engineers(ASME), 2021. (Proceedings of the ASME Turbo Expo).
Download
@inproceedings{131f0afbcf0c4c18865986b3ca082c6e,
title = "Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine",
abstract = "Exhaust hoods with an integrated axial-radial diffuser use the kinetic energy downstream of a turbine for static pressure recovery. This is especially useful in applications with limited axial space behind the turbine. So far, such exhaust hoods have been used almost exclusively in larger turbomachinery such as maritime turbochargers and steam turbines, where an axial turbine is typically installed. In combination with an axial turbine, an exhaust hood can result in a very powerful and space-efficient turbine design, especially under highly pulsating inflow conditions. Both are important requirements for automotive turbochargers. Therefore, the application of such an exhaust hood in a small automotive turbocharger is investigated in this paper; this turbocharger also uses an axial turbine. In the first step, a preliminary design is developed, based on a design approach for steam turbine exhaust hoods. The resulting design is examined with a 3D CFD model to determine efficiency and turbine performance. Subsequently, the design is improved by modifying the exhaust hood geometry such as to further improve the overall efficiency of the turbine. Finally, the CFD evaluation for the operating point investigated reveals an increased power output and a higher overall turbine efficiency compared to the initial design. A resulting design guideline for exhaust hoods with an integrated axial-radial diffuser is included.",
author = "Christoph Kuestner and Seume, {Joerg R.}",
note = "Funding Information: The results presented here were carried out on the cluster system at the Leibniz Universitaet Hannover, Germany, under Grant. This support is gratefully acknowledged.; ASME Turbo Expo 2021 : Turbomachinery Technical Conference and Exposition, GT 2021 ; Conference date: 07-06-2021 Through 11-06-2021",
year = "2021",
month = sep,
day = "16",
doi = "10.1115/GT2021-58600",
language = "English",
series = "Proceedings of the ASME Turbo Expo",
publisher = "American Society of Mechanical Engineers(ASME)",
booktitle = "Turbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery",
address = "United States",

}

Download

TY - GEN

T1 - Axial-Radial Diffuser With Integrated Exhaust Hood for An Automotive Turbocharger With Axial Turbine

AU - Kuestner, Christoph

AU - Seume, Joerg R.

N1 - Funding Information: The results presented here were carried out on the cluster system at the Leibniz Universitaet Hannover, Germany, under Grant. This support is gratefully acknowledged.

PY - 2021/9/16

Y1 - 2021/9/16

N2 - Exhaust hoods with an integrated axial-radial diffuser use the kinetic energy downstream of a turbine for static pressure recovery. This is especially useful in applications with limited axial space behind the turbine. So far, such exhaust hoods have been used almost exclusively in larger turbomachinery such as maritime turbochargers and steam turbines, where an axial turbine is typically installed. In combination with an axial turbine, an exhaust hood can result in a very powerful and space-efficient turbine design, especially under highly pulsating inflow conditions. Both are important requirements for automotive turbochargers. Therefore, the application of such an exhaust hood in a small automotive turbocharger is investigated in this paper; this turbocharger also uses an axial turbine. In the first step, a preliminary design is developed, based on a design approach for steam turbine exhaust hoods. The resulting design is examined with a 3D CFD model to determine efficiency and turbine performance. Subsequently, the design is improved by modifying the exhaust hood geometry such as to further improve the overall efficiency of the turbine. Finally, the CFD evaluation for the operating point investigated reveals an increased power output and a higher overall turbine efficiency compared to the initial design. A resulting design guideline for exhaust hoods with an integrated axial-radial diffuser is included.

AB - Exhaust hoods with an integrated axial-radial diffuser use the kinetic energy downstream of a turbine for static pressure recovery. This is especially useful in applications with limited axial space behind the turbine. So far, such exhaust hoods have been used almost exclusively in larger turbomachinery such as maritime turbochargers and steam turbines, where an axial turbine is typically installed. In combination with an axial turbine, an exhaust hood can result in a very powerful and space-efficient turbine design, especially under highly pulsating inflow conditions. Both are important requirements for automotive turbochargers. Therefore, the application of such an exhaust hood in a small automotive turbocharger is investigated in this paper; this turbocharger also uses an axial turbine. In the first step, a preliminary design is developed, based on a design approach for steam turbine exhaust hoods. The resulting design is examined with a 3D CFD model to determine efficiency and turbine performance. Subsequently, the design is improved by modifying the exhaust hood geometry such as to further improve the overall efficiency of the turbine. Finally, the CFD evaluation for the operating point investigated reveals an increased power output and a higher overall turbine efficiency compared to the initial design. A resulting design guideline for exhaust hoods with an integrated axial-radial diffuser is included.

UR - http://www.scopus.com/inward/record.url?scp=85115723376&partnerID=8YFLogxK

U2 - 10.1115/GT2021-58600

DO - 10.1115/GT2021-58600

M3 - Conference contribution

AN - SCOPUS:85115723376

T3 - Proceedings of the ASME Turbo Expo

BT - Turbomachinery - Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery

PB - American Society of Mechanical Engineers(ASME)

T2 - ASME Turbo Expo 2021

Y2 - 7 June 2021 through 11 June 2021

ER -

Von denselben Autoren