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Aerodynamics of Re-entry Capsule with Hyperbolic Contours

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA56 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: Masaya Nagasawa, Hirotaka Otsu, Ryoga Tsujimoto 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・・・<<read more>>

Aerodynamics of Re-entry Vehicle System with Inflatable Ballute

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA57 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: Shinichiro Mekata, Hirotaka Otsu Abstract To determine the aerodynamic characteristics of a flight vehicle equipped with an inflatable ballute. In particular, the influence of the deformation of the ballute on the aerodynamic characteristics will be investigated. Reference URL N/A Reasons and benefits of using JAXA Supercomputer System There・・・<<read more>>

Investigation of the effect of slow gas heating on nanosecond-pulse-driven plasma actuators

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA58 Subject Category: JSS Inter-University Research PDF Responsible Representative: Shintaro Sato, Assistant professor, Tohoku University Contact Information: Shintaro Sato(satoshin@rhd.mech.tohoku.ac.jp) Members: Shintaro Sato, Hibiki Tomie Abstract Flow separation control in fluid machinery is an important factor in terms of energy loss. Vortex generators, for example, can suppress separation, but they work only under specific conditions. Active flow control is required to function under a variety of conditions. In recent years, the・・・<<read more>>

Numerical Analysis of Internal Flow Field in an Aerospace Propulsion Using the Building-Cube Method

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA52 Subject Category: JSS Inter-University Research PDF Responsible Representative: Shinichiro Ogawa, Assistant professor, Osaka Metropolitan University Contact Information: Shinichiro Ogawa, Assistant professor, Osaka Metropolitan University(shinichiro.ogawa@omu.ac.jp) Members: Shinichiro Ogawa, Daisuke Sasaki Abstract The Building-Cube Method (BCM), which is based on a Cartesian mesh and can easily handle the analysis of complex geometries, is useful to improve the computational performance. In this study, we develop a BCM solver for internal flow fields・・・<<read more>>

Study on Physics and Modeling of Turbulent Transitions in Boundary Layer of Hypersonic Flows

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JAXA Supercomputer System Annual Report February 2022-January 2023 Report Number: R22EACA53 Subject Category: JSS Inter-University Research PDF Responsible Representative: Naofumi Ohnishi, Professor, Tohoku University Contact Information: Hiroki Sakamoto, Tohoku University(hiroki.sakamoto.s1@dc.tohoku.ac.jp) Members: Naofumi Ohnishi, Yasuhito Okano, Hiroki Sakamoto Abstract An expansion tube, a ground-based facility that generates hypersonic flow, is expected to be a shock wind tunnel that can experimentally simulate the flow at superorbital reentry. There is concern that turbulent transition in the expansion tube may have adverse effects on・・・<<read more>>