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Environment Conscious Aircraft Systems Research in Eco-wing Technology:Aerodynamic System Design Technology

JAXA Supercomputer System Annual Report April 2019-March 2020

Report Number: R19EA0601

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate, Aviation Systems Research Unit
  • Contact Information: Dongyoun Kwak, Aviation Systems Research Unit(kwak.dongyoun@jaxa.jp)
  • Members: Yoshihisa Aoki, Mitsuhiro Murayama, Dongyoun Kwak, Naoko Tokugawa, Tatsunori Yuhara, Hitoshi Arizono, Fumitake Kuroda, Yoshine Ueda, Keisuke Ohira, Satoshi Kondo, Tohru Hirai, Kentaro Tanaka, Takashi Matsuno, Monami Sasamori, Shinsuke Nishimura, Minoru Yoshimoto, Takahiro Ishida, Shunsuke Noguchi, Kyota Watanabe, Sota Hirayama, Sayo Kabumoto

Abstract

Innovative drag reduction technologies are investigated to reduce the fuel consumption for a conventional aircraft configuration. Aircraft noise prediction technologies and the conceptual design technologies are also developed for future aircraft which achieve low noise and high efficiency.

Reference URL

Please refer to ‘Eco-wing technology | ECAT – Environment-Conscious Aircraft Technology Program | Aeronautical Technology Directorate‘.

Reasons and benefits of using JAXA Supercomputer System

CFD analysis are used for the understanding of aerodynamic characteristics and evaluation of the performance in the aircraft design phase. Huge calculation resources and costs were required for the high fidelity and quick response CFD analysis for the optimum aerodynamic design process on complex aircraft geometry. JSS2 can achieve those requirements, the cost and time are drastically saved on the CFD analysis.

Achievements of the Year

Aerodynamic design was performed on the wing geometry of TRA2022-4 configuration to reduce the drag on cruise flight condition. Comparing with TRA2022-3 configuration designed on 2018, further drag reduction was obtained by design of the wing-body fairing geometry and modification of the main wing area.

The TRA2022-4 configuration which were applied drag reduction aerodynamic technologies and light-weight structual technologies can be acieved 15% saving of the fuel consumption comparing with a reference aircraft TRA2012A.

Annual Reoprt Figures for 2019

Fig.1: Surface pressure distributions and surface flow patterns on TRA2022-4 and TRA2012A configurations(M=0.78, CL=0.52)

 

Publications

– Oral Presentations

1. K. Kubota, T. Yuhara and K. Rinoie, A Study on the Effects of Wingtip Geometries on the Aircraft Performance-Comparisons of Upward and Downward Pointing Winglets-, 57th Aircraft Symposium, 2019.(in Japanese)

Usage of JSS2

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: Automatic Parallelization
  • Number of Processes: 15 – 1200
  • Elapsed Time per Case: 100 Hour(s)

Resources Used

 

Fraction of Usage in Total Resources*1(%): 3.38

 

Details

Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.

Computational Resources
System Name Amount of Core Time
(core x hours)
Fraction of Usage*2(%)
SORA-MA 29,970,086.68 3.64
SORA-PP 107,862.42 0.70
SORA-LM 78.00 0.03
SORA-TPP 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 297.64 0.25
/data 75,301.37 1.29
/ltmp 11,612.22 0.99

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 15.27 0.38

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.

JAXA Supercomputer System Annual Report April 2019-March 2020