Details of a Researcher - Obi, Shinnosuke

Papers - Obi, Shinnosuke

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Microscopic observations of clathrate-hydrate films formed at liquid/liquid interfaces. II. Film thickness in steady water flow

Ito, Y., Kamakura, R., Obi, S. and Mori, Y. H.

Chemical Engineering Science (Chemical Engineering Science) 58 ( 1 ) 107-114 - 114 2003.01

Research paper (conference, symposium, etc.), Joint Work, Accepted, ISSN 00092509

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On the role of correlation between instantaneous velocity and pressure-gradient in large-scale turbulence

Obi Shinnosuke

Proceedings of the ASME/JSME Joint Fluids Engineering Conference (Proceedings of the ASME/JSME Joint Fluids Engineering Conference) 1 C 2059 - 2064 2003

ISSN 9780791836965

<p>Turbulent transport of Reynolds stress by triple moment of fluctuating velocity and pressure-velocity correlation are evaluated from a DNS for wake of a rectangular cylinder located in a uniform flow. The turbulent diffusion transport of turbulent kinetic energy hardly correlates with its gradient vector, indicating that the generally accepted gradient diffusion model is inadequate. It is inferred that the separate modeling of the individual Reynolds stress component provides a better possibility for modeling the turbulent transport in this flow, because of the strong departure from the equilibrium state of turbulence. The possibility of the direct modeling of the pressure gradient-velocity correlation is discussed.</p>

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球面波を用いた局所壁面せん断応力測定方法に関する理論的検討

白井克明，小尾晋之介，益田重明

理論応用力学講演会講演論文集第 52 回理論応用力学講演会講演論文集, 324-324 2003

E-123 地面に衝突する鉛直重力流の統計的性質

長田泰一，井山和人，小尾晋之介，益田重明

日本流体力学会年会講演論文集 2003, 150-151 2003

605 水面波を利用した渦輪の発生

深谷友詞，長田泰一，小尾晋之介，益田重明

流体工学部門講演会講演論文集 2003, 81 2003

1208 一様流中におかれた 2 つの鈍い物体周辺の乱流場

酒井圭太，外海憲彦，小尾晋之介

流体工学部門講演会講演論文集 2003, 146 2003

Evaluation of the pressure-velocity correlation in turbulent wake of a rectangular cylinder

Sakai, K., Maeda, T., and Obi, S.

5th JSME-KSME Fluids Engineering Conference 2002.11

Research paper (conference, symposium, etc.), Joint Work, Accepted

乱流モデル（RANS、k-eモデル）

小尾晋之介

フルードバワーシステム 33 ( 7 ) 438-443 2002.11

Research paper (scientific journal), Single Work

Flow instability and elastic vibration of shrouded corotating disk systems

Fukaya, R., Obi, S., Masuda, S. and Tokuyama, M.

Experiments in Fluids (Experiments in Fluids) 33 ( 3 ) 369-373 - 373 2002.09

Research paper (conference, symposium, etc.), Joint Work, Accepted, ISSN 07234864

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Intratracheal instillation of perfluorocarbon rescued mice with primary pulmonary hypoplasia

Mori, K., Kurihara, N., Obi, S., Hayashida, S., Tokieda, K. and Ikeda, K.

Experimental Lung Research (Experimental Lung Research) 28 ( 6 ) 523-533 - 533 2002.08

Research paper (conference, symposium, etc.), Joint Work, Accepted, ISSN 01902148

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Measurement of wall shear stress by extended laser-Doppler method using dual spherical waves

Shirai, K., Obi, S. and Masuda, S.

The 11th Int. Symp. Appl. Laser Tech. Fluid Mechanics 2002.07

Research paper (conference, symposium, etc.), Joint Work, Accepted

平板に衝突する渦輪の挙動(平板に垂直な面内の速度場)

長田　泰一, 小尾晋之介, 益田　重明

日本機械学会論文集 66 ( 667 ) 733-739 2002.03

Research paper (conference, symposium, etc.), Joint Work

The vortex ring impinging onto a flat plate (vertical cross section and the velocity field)

Nagata T., Obi S., Masuda S.

Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B (Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B) 68 ( 667 ) 733 - 739 2002.03

ISSN 03875016

As a part of the laboratory experiment on an isolated microburst, the instantaneous velocity fields of an impulse-driven vortex ring impinging onto a normal wall were investigated. Vortex rings were visualized by filling ethylene glycol smoke. In this paper, as the sequel of the previous paper (Nagata et al., 2000), by employing PIV, the vertical cross-section of the velocity fields was reported. It was shown that the central downward flow as well as the entrainment above the vortex ring agrees qualitatively with numerical simulation of atmospheric microburst (Proctor, 1984). The roles of vortex ring in the velocity field of microburst was discussed. The time evolution of the total circulation in vertical cross section could be fitted to the theoretical equation for that of incompressible viscous vortex.