### Abstract

Two-scale direct-interaction approximation (TSDIA) is applied to the calculation of the turbulent passive scalar flux, the scalar variance, and the helicity in a rotating system. A skew-diffusion effect is confirmed to appear in a rotating system, which gives rise to the appearance of a component of turbulent scalar flux perpendicular to the local mean scalar gradient and to the axis of rotation. On this basis, the comparison between TSDIA and the smoothing theory is made, and an explicit form for the skew velocity in a rotating system is found.

Original language | English |
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Pages (from-to) | 3388-3401 |

Number of pages | 14 |

Journal | Journal of the Physical Society of Japan |

Volume | 55 |

Issue number | 10 |

Publication status | Published - 1986 Oct |

Externally published | Yes |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

**Two-scale direct-interaction approach to the turbulent scalar flux in a rotating system.** / Shimomura, Yutaka.

Research output: Contribution to journal › Article

*Journal of the Physical Society of Japan*, vol. 55, no. 10, pp. 3388-3401.

}

TY - JOUR

T1 - Two-scale direct-interaction approach to the turbulent scalar flux in a rotating system

AU - Shimomura, Yutaka

PY - 1986/10

Y1 - 1986/10

N2 - Two-scale direct-interaction approximation (TSDIA) is applied to the calculation of the turbulent passive scalar flux, the scalar variance, and the helicity in a rotating system. A skew-diffusion effect is confirmed to appear in a rotating system, which gives rise to the appearance of a component of turbulent scalar flux perpendicular to the local mean scalar gradient and to the axis of rotation. On this basis, the comparison between TSDIA and the smoothing theory is made, and an explicit form for the skew velocity in a rotating system is found.

AB - Two-scale direct-interaction approximation (TSDIA) is applied to the calculation of the turbulent passive scalar flux, the scalar variance, and the helicity in a rotating system. A skew-diffusion effect is confirmed to appear in a rotating system, which gives rise to the appearance of a component of turbulent scalar flux perpendicular to the local mean scalar gradient and to the axis of rotation. On this basis, the comparison between TSDIA and the smoothing theory is made, and an explicit form for the skew velocity in a rotating system is found.

UR - http://www.scopus.com/inward/record.url?scp=0344095249&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0344095249&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0344095249

VL - 55

SP - 3388

EP - 3401

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 10

ER -