Influence of non-uniform magnetic flux density on turbulent MHD flows in a liquid metal MHD power generator

Hiromichi Kobayashi, Hiroki Shionoya, Yoshihiro Okuno

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Large-eddy simulation (LES) of turbulent MHD duct flows is carried out in the liquid metal MHD generator, and the influence of the non-uniform magnetic flux density on the turbulent flows is examined. For high magnetic flux density, the structures of Reynolds stress align along the orientation of the magnetic flux density, and those structures periodically flowed toward the downstream region like Karman vortex sheets are observed. The stronger magnetic field makes the laminarized flow turbulent again. That is confirmed by using spectrum analysis. It is found that a pair of eddy as the secondary flow for the non- MHD duct flow diminishes in the MHD flow. The non-uniform magnetic flux density in the streamwise direction produces the eddy currents that lead to the M-shaped velocity profiles in the plane parallel to the external magnetic field. The velocity profiles are modulated more strongly with the magnetic flux density.

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

フィンガープリント

「Influence of non-uniform magnetic flux density on turbulent MHD flows in a liquid metal MHD power generator」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル