Analysis of dynamo effect in MHD turbulent channel flow

DOI

Bibliographic Information

Other Title
  • MHDチャネル乱流のダイナモ効果の解析

Description

<p>A direct numerical simulation of magnetohydrodynamic (MHD) turbulent channel flow was carried out to investigate turbulent dynamo effect. Time history of the volume-averaged magnetic field showed that a positive magnetic field was generated and sustained. To investigate the mechanism of the magnetic field generation, we obtained the mean fields and the statistical quantities. It was shown that the turbulent electromotive force contributes to the magnetic field generation against the Ohmic term. The profiles of the production terms of the turbulent electromotive force clearly showed that the cross-helicity dynamo actually contributes to the magnetic field generation whereas the pumping dynamo plays a role of anti-dynamo decreasing the magnetic field.</p>

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 77 (1), 15-20, 2025-02-01

    Institute of Industrial Science The University of Tokyo

Details 詳細情報について

  • CRID
    1390584818415364224
  • DOI
    10.11188/seisankenkyu.77.15
  • ISSN
    18812058
    0037105X
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

Report a problem

Back to top