JAXA Supercomputer System Annual Report April 2016-March 2017

Report Number: R16E0005

• Responsible Representative: Toshiya Nakamura(Aeronautical Technology Directorate, Next Generation Aeronautical Innovation Hub Center)
• Contact Information: Junichi Kazawa(kazawa.junichi@jaxa.jp)
• Members: Junichi Kazawa, Shunji Enomoto, Takashi Ishiyama
• Subject Category: Aviation(Aircraft engine)

Abstract

Noise generated from the jet engine is dominant to total aircraft noise level and it is very important to reduce this. In this project, demonstration of exhaust noise reduction by changing exhaust duct shape, and study of fan noise reduction technique by numerical analysis are carried out.

Goal

Please refer 'Green engine technology | ECAT - Environment-Conscious Aircraft Technology Program | Aeronautical Technology Directorate'.

Objective

Please refer 'Green engine technology | ECAT - Environment-Conscious Aircraft Technology Program | Aeronautical Technology Directorate'.

References and Links

Please refer 'Green engine technology | ECAT - Environment-Conscious Aircraft Technology Program | Aeronautical Technology Directorate'.

Use of the Supercomputer

Numerical analyses of fan noise are carried out. To capture fan noise by numerical analysis, large-scale calculations are required, so we use supercomputers for numerical analyses and post-processing of data.

Necessity of the Supercomputer

To capture fan noise by numerical analyses simulating real fans, it is necessary to conduct large-scale calculations (number of grids is 100 million points or more), so it cannot be calculated without supercomputers.

Achievements of the Year

The data obtained in the calculations including the tip clearance of the fan rotor blades conducted last fiscal year were processed. It was confirmed whether the tip clearance had an influence on the fan noise by comparing with the calculation result without the blade tip clearance which was performed before.

※ This calculation was conducted based on joint research with IHI Co., Ltd.

Publications

N/A

Computational Information

• Parallelization Methods: Serial
• Process Parallelization Methods: n/a
• Thread Parallelization Methods: n/a
• Number of Processes: 1
• Number of Threads per Process: 1
• Number of Nodes Used: 1
• Elapsed Time per Case (Hours): 3
• Number of Cases: 45

Resources Used

Total Amount of Virtual Cost(Yen): 11,034,199

Breakdown List by Resources

Note: Virtual Cost=amount of cost, using the unit price list of JAXA Facility Utilization program(2016)

JAXA Supercomputer System Annual Report April 2016-March 2017