Numerical study on turbulent flows in a liquid metal MHD generator

Hiroki Shionoya, Hiromichi Kobayashi, Yoshihiro Okuno

研究成果: Conference contribution

6 引用 (Scopus)

抜粋

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.

元の言語English
ホスト出版物のタイトル42nd AIAA Plasmadynamics and Lasers Conference
出版物ステータスPublished - 2011 12 1
イベント42nd AIAA Plasmadynamics and Lasers Conference 2011 - Honolulu, HI, United States
継続期間: 2011 6 272011 6 30

出版物シリーズ

名前42nd AIAA Plasmadynamics and Lasers Conference

Other

Other42nd AIAA Plasmadynamics and Lasers Conference 2011
United States
Honolulu, HI
期間11/6/2711/6/30

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

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  • これを引用

    Shionoya, H., Kobayashi, H., & Okuno, Y. (2011). Numerical study on turbulent flows in a liquid metal MHD generator. : 42nd AIAA Plasmadynamics and Lasers Conference (42nd AIAA Plasmadynamics and Lasers Conference).