綾 史郎

Articles:  1-7 of 7

  • 2-D NUMERICAL ANALYSIS OF FLOW AND TRANSVERSE MIXING OF CONTAMINANTS IN A RIVER  [in Japanese]

    IWASA Yoshiaki , AYA Shirou , INOUE Tomoo

    This paper deals with the two-dimensional numerical analysis method of flowsand transverse mixing of contaminants in a river by means of the generalizedcurvilinear coordinate system. Basic mathematica …

    Disaster Prevention Research Institute Annuals. B (32B-2), p669-687, 1989-04

    IR 

  • MASS TRANSPORT BETWEEN TURBULENT SURFACE AND SUBSURFACE FLOWS OVER PERMEABLEBOUNDARIES AND ITS EFFECT ONLONGITUDINAL DISPERSION  [in Japanese]

    IWASA Yoshiaki , AYA Shirou , NAKAI Toshio

    This paper presents the results of experimental study on the vertical mass transport betweensurface and subsurface flows over permeable boundaries and theoretical and experimental studyon the longitud …

    Disaster Prevention Research Institute Annuals. B (29B-2), p511-527, 1986-04

    IR 

  • LAGRANGIAN AUTO-CORRELATION FUNCTION IN TURBULENT SHEAR FLOW  [in Japanese]

    IWASA Yoshiaki , AYA Shiro , MITSUISHI Shinya

    This paper deals with a longitudinal mixing of particles which are instantaneously releasedin a bounded turbulent shear flow. The movements of particles are described in view of theLagrangian particle …

    Disaster Prevention Research Institute Annuals. B (28B-2), p417-427, 1985-04

    IR 

  • NUMERICAL SIMULATION OF SALT-WATER INTRUSION IN POROUS MEDIA  [in Japanese]

    IWASA Yoshiaki , AYA Shiro , OHNISHI Wataru

    The present paper deals with the shape of salt-intrusions in various confined aquifers bynumerical simulations. A set of basic partial differential equations which governs salt-intrusionphenomena is s …

    Disaster Prevention Research Institute Annuals. B (27B-2), p409-418, 1984-04

    IR 

  • LONGITUDINAL DISPERSION COEFFICIENT OF OPEN CHANNEL FLOW IN RECTANGULAR CROSS SECTION FLUMES  [in Japanese]

    IWASA Yoshiaki , AYA Shiro , YAKUSHIJI Kimifumi

    This paper presents a part of the results from 19 dispersion experiments made in open channelflumes of rectangular cross section. The main objectives are to report the details of the exper-iments, the …

    Disaster Prevention Research Institute Annuals. B (26B-2), p445-460, 1983-04

    IR 

  • NUMERICAL ANALYSIS OF DISPERSIVE PROCESSES IN NATURAL STREAMS  [in Japanese]

    IWASA Yoshiaki , AYA Shirou , KOKADO Takeshi

    In this study, the dispersive behaviours of a solution injected at the upper boundary in formsof a square wave in natural streams are studied by means of numercal and analytical methods.In uniform flo …

    Disaster Prevention Research Institute annuals (21B-2), p307-317, 1978-04

    IR 

  • GRAPH-THEORETIC ANALYSIS OF FLOWS IN NETWORKS OF PIPES AND OPEN-CHANNELS  [in Japanese]

    IWASA Yoshiaki , AYA Shirou , YAMAMOTO Masayuki

    The graph theory is used to express the complex structure of pipe and channel networks inthis paper. First, a generalized new method and its applicability to analize steady flows in pipenetworks are d …

    Disaster Prevention Research Institute Annuals. B (19B-2), p201-219, 1976-04

    IR 

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