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Aerodynamics of Re-entry Capsule with Hyperbolic Contours

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA56 Subject Category: JSS Inter-University Research PDF Responsible Representative: Hirotaka Otsu, Professor, Ryukoku University Contact Information: Hirotaka Otsu, Professor, Ryukoku University(otsu@rins.ryukoku.ac.jp) Members: Hirotaka Otsu Abstract For deleveopment of future sample return capsule, we applied the hyperbolic contours to design the front shape of the capsue. To find the optimal shape of the capsule, we perfomed CFD analyses. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System There have・・・<<read more>>

Numerical simulations for the development of an active flow control methodology focusing on the characteristic structures of fluid flows

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA58 Subject Category: JSS Inter-University Research PDF Responsible Representative: Shintaro Sato, Assistant professor, Tohoku University Contact Information: Shintaro Sato(shintaro.sato.c3@tohoku.ac.jp) Members: Shintaro Sato, Fumiya Sasaki Abstract Controlling fluid flows to a preferred state in terms of energy efficiency is an important issue in fluid mechanics. However, it is still challenging to accurately estimate the fluid flow state and accurately determine the control inputs when the fluid flow exhibits a turbulent state.・・・<<read more>>

Low-cost rotary wing design applied to design optimization of roter blade for Mars helicopter

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA59 Subject Category: JSS Inter-University Research PDF Responsible Representative: Masahiro Kanazaki, Professor, Tokyo Metopolitan University Contact Information: Masahiro Kanazaki, Professor(kana@tmu.ac.jp) Members: Masahiro Kanazaki, Hikari Kono, Takashi Matsuno, Takumi Nakagawa, Riku Tokuono Abstract In this study, we devised rotor blades using thin corrugated airfoils as a concept for storing Mars exploration helicopters in sizes and shapes suitable for rocket transport. Numerical calculations and optimal design were conducted from the perspectives of・・・<<read more>>

Research on dynamic attitude stability evaluation of high-speed flying objects using CFD

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA60 Subject Category: JSS Inter-University Research PDF Responsible Representative: Koji Miyaji, Professor, Yokohma National University Contact Information: Koji Miyaji(miyaji@ynu.ac.jp) Members: Kazuki Hyodo, Koji Miyaji, Kenichiro Takayanagi Abstract The static and dynamic stability of high-speed flying objects are evaluated by CFD. We Actual analysis target is the High-Mach Integrated Control experiment (HIMICO), a hypersonic integrated control experiment being jointly researched and developed by JAXA and several universities. We compare CFD analysis,・・・<<read more>>

Numerical study of one directional flow caused by jet pump located in an acoustic resonator

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JAXA Supercomputer System Annual Report February 2024-January 2025 Report Number: R24EACA61 Subject Category: JSS Inter-University Research PDF Responsible Representative: Kazuto Kuzuu, Professor, Department of Mechanical Engineering, Tokai University Contact Information: Kazuto Kuzuu, Tokai University(kuzuu@tsc.u-tokai.ac.jp) Members: Kazuto Kuzuu, Masato Ogawa Abstract When there is a flow path with a narrow diameter and temperature gradient in a gas-filled duct, acoustic vibration may occur thereby. This phenomenon is known as a thermoacoustic phenomenon, and the generated acoustic field may be accompanied by a・・・<<read more>>