Environment Conscious Aircraft Systems Research in Eco-wing Technology:Aerodynamic System Design Technology
JAXA Supercomputer System Annual Report April 2019-March 2020
Report Number: R19ETET15
Subject Category: Skills Acquisition System
- Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate, Aviation Systems Research Unit
- Contact Information: Dongyoun Kwak, Aviation Systems Research Unit(kwak.dongyoun@jaxa.jp)
- Members: Shoya Ogino, Shuhei Kondo, Masaru Hirata, Yuki Hasegawa, Mitsuhiro Murayama, Yasushi Ito, Ryotaro Sakai, Shinya Koganezawa, Dongyoun Kwak,
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
The aerodynamic performance of an unconventional low-noise aircraft with engines mounted over the rear-fuselage was evaluated by CFD. Comparing with the initial geometry, modifications of the rear fuselage and nacelle geometries were improved aerodynamic performance. The aerodynamic sensitivities by the rear part geometries were obtained to reduce the interference between the airframe and propulsion systems. (Fig. 1).

Fig.1: Evaluation of aerodynamic performance by variations of the rear fuselage and nacelle geometries
Publications
N/A
Usage of JSS2
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: OpenMP
- Number of Processes: 128 – 256
- Elapsed Time per Case: 25 Hour(s)
Resources Used
Fraction of Usage in Total Resources*1(%): 0.18
Details
Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.
System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
---|---|---|
SORA-MA | 1,174,459.76 | 0.14 |
SORA-PP | 62,144.96 | 0.40 |
SORA-LM | 1,129.15 | 0.47 |
SORA-TPP | 0.00 | 0.00 |
File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 1,070.57 | 0.89 |
/data | 51,641.92 | 0.88 |
/ltmp | 9,097.57 | 0.77 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 71.57 | 1.80 |
*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