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4 Result(s)

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  1. No Access

    Chapter and Conference Paper

    Statistics of Quasi-Geostrophic Vortex Patches

    The statistics of quasi-gestrophic point vortices and spherical vortex patches are investigated theoretically and numerically, in order to understand fundamental aspects of quasi-geostrophic turbulence. The nu...

    Takeshi Miyazaki, Li Yingtai, Hiroshi Taira… in IUTAM Symposium on Computational Physics a… (2008)

  2. No Access

    Chapter and Conference Paper

    The Breakdown of a Columnar Vortex with Axial Flow

    The interaction between a columnar vortex and external turbulence is investigated numerically. The formation of turbulent eddies around the columnar vortex and the vortex-core deformations are studied in detai...

    Naoya Takahashi, Takeshi Miyazaki in IUTAM Symposium on Computational Physics a… (2008)

  3. No Access

    Chapter and Conference Paper

    Statistics of Turbulence around a Columnar Vortex

    Interactions between intense elongated vortices and surrounding turbulent motions are often produced artificially in engineering and environmental flows, and they occur naturally in most homogeneous and sheare...

    Takeshi Miyazaki, Hiroyuki Ishii… in IUTAM Symposium on Geometry and Statistics… (2001)

  4. No Access

    Chapter and Conference Paper

    Turbulence Structure Around a Columnar Vortex - RDT and Vortex Wave Excitation

    In this paper, the structure of initially isotropic homogeneous turbulence around solid and fluid columnar vortices (with circulation Г and radius σ) is investigated using rapid distortion theory (RDT). We assume...

    Takeshi Miyazaki, Julian C. R. Hunt in Advances in Turbulence VII (1998)