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Computational analysis of compound helicopter

JAXA Supercomputer System Annual Report February 2021-January 2022

Report Number: R21ETET08

Subject Category: Skills Acquisition System

PDF available here

  • Responsible Representative: Yoshikazu Makino, Aeronautical Technology Directorate, Aviation Systems Research Unit
  • Contact Information: Takeshi Akasaka, Kanazawa Institute of Technology(akasaka@neptune.kanazawa-it.ac.jp)
  • Members: Yusuke Hamamoto, Hideaki Sugawara, Yasutada Tanabe

Abstract

The purpose of this study is to investigate aerodynamic interaction between the rotor and the winged-body of a compound helicopter using CFD analysis.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

The analysis of the aerodynamic interaction between the rotor and the winged-body using the helicopter aerodynamic analysis code rFlow3D is computationally intensive.

Achievements of the Year

The effect of advance ratio on the aerodynamic interaction between main rotor and winged-body was investigated through numerical simulations. Figure 1 shows the computational grid. The rotation of the blades of main rotor were simulated by moving overlapped grid. This simulation was performed using rFlow3D which is deveroped by JAXA. Figure 2 shows the overview of flow field of the rotor and winged-body. As a result, the total aerodynamic performance of the compound helicopter reduced significantly at higher advance ratios.

Annual Reoprt Figures for 2021

Fig.1: Computational grid of main rotor and winged-body

 

Annual Reoprt Figures for 2021

Fig.2: Flow field of the rotor and winged-body

 

Publications

- Oral Presentations

1)Hamamoto, Y., Akasaka, T., Tanabe, Y., Sugawara, H., Aerodynamic Interaction Between a Rotor and a Wing on Compound Helicopter in Forward Flights, the 53rd Fluid Dynamics Conference / the 39th Aerospace Numerical Simulation Symposium, Jun. 2021.

2)Hamamoto, Y., Akasaka, T., Tanabe, Y., Sugawara, H .,The Influence of Rotor/Wing Aerodynamic Interaction of Compound Helicopter in Forward Flights on Rotor,the 59th Aircraft Symposium, Dec. 2021.

Usage of JSS

Computational Information

  • Process Parallelization Methods: N/A
  • Thread Parallelization Methods: OpenMP
  • Number of Processes: 1
  • Elapsed Time per Case: 168 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.62

 

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 11443.28 0.00
TOKI-ST 4315909.18 5.32
TOKI-GP 0.00 0.00
TOKI-XM 0.00 0.00
TOKI-LM 0.00 0.00
TOKI-TST 8.32 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 44.18 0.04
/data and /data2 18454.51 0.20
/ssd 450.99 0.12

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 0.00 0.00

*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)
210.96 0.15

*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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