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Aerodynamic evaluation of an annular plug inside a flow-through nacelle of an aircraft model.

JAXA Supercomputer System Annual Report February 2021-January 2022

Report Number: R21EDA201N05

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Takashi Aoyama, Aeronautical Technology Directorate, Aircraft Lifecycle Innovation Hub
  • Contact Information: Makoto Ueno, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub(ueno.makoto@jaxa.jp)
  • Members: Chigusa Hamada, Kenji Hayashi, Takashi Ishida, Fumitake Kuroda, Masaru Naruoka, Hiroya Toriida, Makoto Ueno, Takahiro Uchiyama, Yuko Ueno, Kento Yamada, Takahiro Yamamoto

Abstract

The air flow rate in the engine nacelle is adjusted using annular plugs placed in the nacelle to evaluate the effect of the air flow rate in the engine nacelle on the aerodynamic characteristics of the aircraft.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

It is necessary to perform CFD computation including flow around a whole aircraft because it requires highly parallelized computation. Additionally, the JSS2 was chosen because the FaSTAR CFD solver is optimized, as well.

Achievements of the Year

Flowfields around the wind tunnel testing model for detailed aerodynamic modeling with and without an annular plug inside a flow-through nacelle were obtained using FaSTAR.

Annual Reoprt Figures for 2021

Fig.1: Limiting streamlines inside a flow-through nacelle without an annular plug (Mach 0.8, AoA 3deg)

 

Annual Reoprt Figures for 2021

Fig.2: Limiting streamlines inside a flow-through nacelle with an annular plug (Mach 0.8, AoA 3deg)

 

Publications

N/A

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: N/A
  • Number of Processes: 25
  • Elapsed Time per Case: 12.5 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 2.77

 

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name CPU Resources Used
(Core x Hours)
Fraction of Usage*2(%)
TOKI-SORA 65869676.35 3.20
TOKI-ST 5701.32 0.01
TOKI-GP 0.00 0.00
TOKI-XM 0.00 0.00
TOKI-LM 0.00 0.00
TOKI-TST 0.00 0.00
TOKI-TGP 0.00 0.00
TOKI-TLM 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 752.15 0.75
/data and /data2 131318.39 1.40
/ssd 398.89 0.10

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 71.32 0.48

*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.

 

ISV Software Licenses Used

ISV Software Licenses Resources
ISV Software Licenses Used
(Hours)
Fraction of Usage*2(%)
ISV Software Licenses
(Total)
21.20 0.01

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

JAXA Supercomputer System Annual Report February 2021-January 2022


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Language / 言語

"Annual Report" available

How to use JSS3

To use JSS3, please refer to "How to use JSS3" page .

Location

Chofu Aerospace Center
7-44-1 Jindaiji Higashi-machi, Chofu-shi, Tokyo