Journal of Japan Society of Fluid Mechanics

Online ISSN : 2185-4912
Print ISSN : 0286-3154
ISSN-L : 0286-3154

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Volume 11, Issue 2

Displaying 1-9 of 9 articles from this issue

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Topology and Fluid Dynamics

Ryuji TAKAKI

1992 Volume 11 Issue 2 Pages 79-81
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.79

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An introductory survey is given to the special editorial project “Topology and Fluid Dynamics”, which is printed in this and the next issues. This project is a collection of review articles by the authors who presented papers in the joint meeting held in June 1991 in The Institute of Mathematical Sciences, Kyoto University. The important factors in the topology are pointed out first, and their relations to the fluid dynamical problems are explained. A hope is expressed on the future development of this aspect of fluid dynamics.

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Flow visualization of a vortex ring and a vortex pair

Hideo YAMADA

1992 Volume 11 Issue 2 Pages 82-86
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.82

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Mechanism of mode selection in transition

Jiro MIZUSHIMA

1992 Volume 11 Issue 2 Pages 87-91
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.87

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Cluster structure in three-dimensional turbulence II

Tsutomu SANADA

1992 Volume 11 Issue 2 Pages 92-95
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.92

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Magnetic Field and Topology in Plasmas

Tadatsugu HATORI, Kazuhiro URATA

1992 Volume 11 Issue 2 Pages 96-100
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.96

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Mathematical Remarks on the Woltjer State of Plasma Equilibrium

Zensho YOSHIDA

1992 Volume 11 Issue 2 Pages 101-105
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.101

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Thermal Convection of a Fluid with Temperature-dependent Viscosity

Osamu HIRAYAMA, Ryuji TAKAKI

1992 Volume 11 Issue 2 Pages 107-120
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.107

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The numerical computation of two-dimensional Bénard convection with temperature dependent viscosity of exponential type was made with Boussinesq approximation. The free surface condition and periodic structure in the horizontal direction were assumed, where the horizontal length of periodicity is the twice of the depth. The solutions of the stationary states were obtained for the Rayleigh number R_a0=3000 and 1600. For R_a0=3000 and 1600, two stationary solutions were obtained, i.e. the flow had a multi-valued nature, with the log viscosity ratio c≥8 and c≥10 respectively.

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Theoretical analysis of propagation of finite-amplitude waves in a non-uniform atmosphere

Masamichi USHIJIMA, Mitsuo MAKINO

1992 Volume 11 Issue 2 Pages 121-130
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.121

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This paper deals with one-dimensional finite-amplitude waves propagating vertically downwards through the non-uniform atmosphere by analytical methods, and investigates the behavior of shock waves at very large distances.
First, the linear wave equation for the non-uniform atmosphere is deduced and solved. Secondly, modifying the linearized solution by means of non-linearization technique, the propagating speed and strength of shock wave are found form that results.
Finally, the speed and strength of shock waves and the propagating wave from are calculated numerically for the non-uniform and the uniform atmosphere, and the results are compared between both cases.

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[title in Japanese]

[in Japanese]

1992 Volume 11 Issue 2 Pages 133-134
Published: June 30, 1992
Released on J-STAGE: March 07, 2011

DOIhttps://doi.org/10.11426/nagare1982.11.133

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