JAXA Supercomputer System Annual Report April 2016-March 2017

Report Number: R16E0017

• Responsible Representative: Yuichi Matsuo(Aeronautical Technology Directorate, Numerical Simulation Research Unit)
• Contact Information: Atsushi Hashimoto(hashimoto.atsushi@jaxa.jp)
• Members: Minoru Yoshimoto, Shinsuke Nishimura, Katsutoshi Ishikawa, Yukinori Morita, Takuya Ogura, Kazuhiro Imai, Takashi Ishida, Atsushi Hashimoto, Kenji Hayashi, Kuniyuki Takekawa, Takashi Aoyama
• Subject Category: Aviation(Body sound)

Abstract

We analyze the effect of payload in the cavity. We validate the computational result comparing with the experimental data.

Goal

The purpose of this research is to predict acoustic vibration caused by a cavity of aircraft.

Objective

The target of this research is to predict the effect of payload in the cavity.

References and Links

N/A

Use of the Supercomputer

CFD to predict acoustic vibration caused by cavity flow.

Necessity of the Supercomputer

Unsteady simulation is more than 1000 times cost compared with steady simulation. We need a supercomputer to obtain a result within a reasonable time.

Achievements of the Year

Figure 1 shows the simulation result of cavity flow with payload. The free shear layer interacts with the payload, and this affects the acoustic vibration. We found that the effect of payload is simulated correctly.

Fig.1:Flow inside cavity

Publications

N/A

Computational Information

• Parallelization Methods: Process Parallelization
• Process Parallelization Methods: MPI
• Thread Parallelization Methods: n/a
• Number of Processes: 512
• Number of Threads per Process: 1
• Number of Nodes Used: 16
• Elapsed Time per Case (Hours): 480
• Number of Cases: 2

Resources Used

Total Amount of Virtual Cost(Yen): 6,688,589

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