Numerical study on turbulent flows in a liquid metal MHD generator

Hiroki Shionoya, Hiromichi Kobayashi, Yoshihiro Okuno

研究成果: Conference contribution

8 被引用数 (Scopus)

抄録

Large-eddy simulation (LES) of the turbulent duct flows in a liquid metal magnethydrodynamic (MHD) power generator is examined to reveal the behavior of the MHD flows and the turbulent structures. The non-uniform magnetic flux density in the streamwise direction produces two eddy currents. The eddy current causes the wall-jet flows with M-shaped mean streamwise velocity profiles in the plane perpendicular to the external magnetic field. In contrast, the Hartmann flows with the flattened velocity profiles by the Lorentz force are produced in the plane parallel to the external magnetic field. In the case of the strong magnetic flux density, the turbulence structure similar to the Karman vortex sheets emerge in the downstream duct. As for the secondary flows, two vortexes at the corner of the duct disappear with applied magnetic flux density. When the magnetic field is applied, the frequency spectrum of the Reynolds stress gives the strong intensity in a low frequency regime.

本文言語English
ホスト出版物のタイトル42nd AIAA Plasmadynamics and Lasers Conference
出版社American Institute of Aeronautics and Astronautics Inc.
ISBN(印刷版)9781624101472
DOI
出版ステータスPublished - 2011
イベント42nd AIAA Plasmadynamics and Lasers Conference 2011 - Honolulu, HI, United States
継続期間: 2011 6月 272011 6月 30

出版物シリーズ

名前42nd AIAA Plasmadynamics and Lasers Conference

Other

Other42nd AIAA Plasmadynamics and Lasers Conference 2011
国/地域United States
CityHonolulu, HI
Period11/6/2711/6/30

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 凝縮系物理学
  • 原子分子物理学および光学

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