Computational analysis of compound helicopter

JAXA Supercomputer System Annual Report April 2019-March 2020

Report Number: R19ETET08

Subject Category: Skills Acquisition System

Responsible Representative: Takeshi Akasaka, Associate Proffesor, Kanazawa Institute of Technology
Contact Information: Takeshi Akasaka, Kanazawa Institute of Technology(akasaka@neptune.kanazawa-it.ac.jp)
Members: Yasutada Tanabe, Yusuke Hamamoto, Hideaki Sugawara

Abstract

The purpose of this study is to investigate aerodynamic interaction between the rotor and the wing 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 wing using the helicopter aerodynamic analysis code rFlow3D is computationally intensive.

Achievements of the Year

The aerodynamic interaction between the rotor and the wing of a compound helicopter could be simulated in hover (Fig.1) . The aerodynamic interaction between the rotor and the wing of a compound helicopter could be simulated in high speed flight (Fig.2) . The aerodynamic interaction between the rotor and the wing of a compound tandem helicopter could be simulated in hover (Fig.3) .

Fig.1: Aerodynamic Interaction of compound helicopter between the rotor and the wing in Hover

Fig.2: Aerodynamic Interaction of compound tandem helicopter between the rotor and the wing in high speed flight

Fig.3: Aerodynamic Interaction of compound tandem helicopter between the rotor and the wing in hover : wing aspect ratio 3.75

Publications

– Non peer-reviewed papers

1) Hiroki Oshima, Takeshi Akasaka, Yusuke Hamamoto, Experimental Study of the Rotor-Wing Aerodynamic Interaction for Wing span in hover, 16th International Conference Fluid Dynamics, 2019.

2) Atsuya Harata, Rotor / Wing Aerodynamic Interference during High-speed Flight using CFD, Graduation thesis, Kanzawa Institue of Technology, 2020.

3) Kentaro Otani, Reduction of Aerodynamic Interaction for Compound Tandem Rotor in Hover, Graduation thesis, Kanzawa Institue of Technology, 2020.

Usage of JSS2

Computational Information

Process Parallelization Methods: N/A
Thread Parallelization Methods: OpenMP
Number of Processes: 1
Elapsed Time per Case: 864 Hour(s)

Resources Used

Fraction of Usage in Total Resources*1(%): 0.07

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	0.00	0.00
SORA-PP	174,551.77	1.13
SORA-LM	0.00	0.00
SORA-TPP	3,558.63	0.21

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	48.98	0.04
/data	7,546.17	0.13
/ltmp	1,331.68	0.11

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.