Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers

Lee Galloway; Sung In Kim; Jongyoon Park; Seong Kwon; Sejong Yoo

doi:10.1115/GT2021-59616

Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers

Lee Galloway
, Sung In Kim
, Jongyoon Park
, Seong Kwon
, Sejong Yoo

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Citations (Scopus)

Abstract

An aerodynamic design optimization study of the nozzle vane of a variable geometry turbine (VGT) turbocharger for a diesel engine application was conducted using the commercial software, ANSYS CFX and DesignXplorer. The nozzle design was optimized at three critical engine operating points. The nozzle shape was parameterized using key design parameters including theta angle, thickness value and opening angle. For a good balance of computational time and accuracy, the optimization approach adopted meta-models and response surfaces to represent the training data and reduce the number of simulations required to reach an optimal design.

Finally, more than 300 optimized designs were simulated to assess the performance and characteristics of each design. The final optimized nozzle design met all the design constraints and showed an improvement of up to 2% efficiency and reduced the maximum torque by 20% compared to the baseline nozzle.

Original language	English
Title of host publication	ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition
Subtitle of host publication	Turbomachinery - Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions
Publisher	American Society of Mechanical Engineers (ASME)
Number of pages	10
Volume	2C
ISBN (Electronic)	9780791884928
DOIs	https://doi.org/10.1115/GT2021-59616
Publication status	Published - 16 Sept 2021
Event	ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, GT 2021 - Virtual, Online Duration: 07 Jun 2021 → 11 Jun 2021

Publication series

Name	Proceedings of the ASME Turbo Expo
Volume	2C-2021

Conference

Conference	ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, GT 2021
City	Virtual, Online
Period	07/06/2021 → 11/06/2021

Bibliographical note

Funding Information:
This research was funded by KeyYang Precision Co., which is gratefully acknowledged. The authors would like to thank ANSYS Inc. for the use of their software in this research.

Publisher Copyright:
© 2021 American Society of Mechanical Engineers (ASME). All rights reserved.

Keywords

Aerodynamic optimization
CFD
Nozzle vane
Radial turbine
Turbocharger
VGT

ASJC Scopus subject areas

General Engineering

Access to Document

10.1115/GT2021-59616

Cite this

Galloway, L., Kim, S. I., Park, J., Kwon, S., & Yoo, S. (2021). Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers. In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition: Turbomachinery - Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions (Vol. 2C). Article V02CT34A032 (Proceedings of the ASME Turbo Expo; Vol. 2C-2021). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/GT2021-59616

Galloway, Lee ; Kim, Sung In ; Park, Jongyoon et al. / Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers. ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition: Turbomachinery - Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions. Vol. 2C American Society of Mechanical Engineers (ASME), 2021. (Proceedings of the ASME Turbo Expo).

@inproceedings{6d186fcad1e046ccba5240a34c74968f,

title = "Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers",

abstract = "An aerodynamic design optimization study of the nozzle vane of a variable geometry turbine (VGT) turbocharger for a diesel engine application was conducted using the commercial software, ANSYS CFX and DesignXplorer. The nozzle design was optimized at three critical engine operating points. The nozzle shape was parameterized using key design parameters including theta angle, thickness value and opening angle. For a good balance of computational time and accuracy, the optimization approach adopted meta-models and response surfaces to represent the training data and reduce the number of simulations required to reach an optimal design. Finally, more than 300 optimized designs were simulated to assess the performance and characteristics of each design. The final optimized nozzle design met all the design constraints and showed an improvement of up to 2\% efficiency and reduced the maximum torque by 20\% compared to the baseline nozzle.",

keywords = "Aerodynamic optimization, CFD, Nozzle vane, Radial turbine, Turbocharger, VGT",

author = "Lee Galloway and Kim, \{Sung In\} and Jongyoon Park and Seong Kwon and Sejong Yoo",

note = "Funding Information: This research was funded by KeyYang Precision Co., which is gratefully acknowledged. The authors would like to thank ANSYS Inc. for the use of their software in this research. Publisher Copyright: {\textcopyright} 2021 American Society of Mechanical Engineers (ASME). All rights reserved.; 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/GT2021-59616",

language = "English",

volume = "2C",

series = "Proceedings of the ASME Turbo Expo",

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Galloway, L, Kim, SI, Park, J, Kwon, S & Yoo, S 2021, Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers. in ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition: Turbomachinery - Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions. vol. 2C, V02CT34A032, Proceedings of the ASME Turbo Expo, vol. 2C-2021, American Society of Mechanical Engineers (ASME), ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, GT 2021, Virtual, Online, 07/06/2021. https://doi.org/10.1115/GT2021-59616

Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers. / Galloway, Lee; Kim, Sung In; Park, Jongyoon et al.
ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition: Turbomachinery - Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions. Vol. 2C American Society of Mechanical Engineers (ASME), 2021. V02CT34A032 (Proceedings of the ASME Turbo Expo; Vol. 2C-2021).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers

AU - Galloway, Lee

AU - Kim, Sung In

AU - Park, Jongyoon

AU - Kwon, Seong

AU - Yoo, Sejong

N1 - Funding Information: This research was funded by KeyYang Precision Co., which is gratefully acknowledged. The authors would like to thank ANSYS Inc. for the use of their software in this research. Publisher Copyright: © 2021 American Society of Mechanical Engineers (ASME). All rights reserved.

PY - 2021/9/16

Y1 - 2021/9/16

N2 - An aerodynamic design optimization study of the nozzle vane of a variable geometry turbine (VGT) turbocharger for a diesel engine application was conducted using the commercial software, ANSYS CFX and DesignXplorer. The nozzle design was optimized at three critical engine operating points. The nozzle shape was parameterized using key design parameters including theta angle, thickness value and opening angle. For a good balance of computational time and accuracy, the optimization approach adopted meta-models and response surfaces to represent the training data and reduce the number of simulations required to reach an optimal design. Finally, more than 300 optimized designs were simulated to assess the performance and characteristics of each design. The final optimized nozzle design met all the design constraints and showed an improvement of up to 2% efficiency and reduced the maximum torque by 20% compared to the baseline nozzle.

AB - An aerodynamic design optimization study of the nozzle vane of a variable geometry turbine (VGT) turbocharger for a diesel engine application was conducted using the commercial software, ANSYS CFX and DesignXplorer. The nozzle design was optimized at three critical engine operating points. The nozzle shape was parameterized using key design parameters including theta angle, thickness value and opening angle. For a good balance of computational time and accuracy, the optimization approach adopted meta-models and response surfaces to represent the training data and reduce the number of simulations required to reach an optimal design. Finally, more than 300 optimized designs were simulated to assess the performance and characteristics of each design. The final optimized nozzle design met all the design constraints and showed an improvement of up to 2% efficiency and reduced the maximum torque by 20% compared to the baseline nozzle.

KW - Aerodynamic optimization

KW - CFD

KW - Nozzle vane

KW - Radial turbine

KW - Turbocharger

KW - VGT

U2 - 10.1115/GT2021-59616

DO - 10.1115/GT2021-59616

M3 - Conference contribution

AN - SCOPUS:85115444859

VL - 2C

T3 - Proceedings of the ASME Turbo Expo

BT - ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, GT 2021

Y2 - 7 June 2021 through 11 June 2021

ER -

Galloway L, Kim SI, Park J, Kwon S, Yoo S. Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers. In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition: Turbomachinery - Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions. Vol. 2C. American Society of Mechanical Engineers (ASME). 2021. V02CT34A032. (Proceedings of the ASME Turbo Expo). doi: 10.1115/GT2021-59616

Aerodynamic design optimization of a variable geometry nozzle vane for automotive turbochargers

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this