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

Hiromichi Kobayashi, Hiroki Shionoya, Yoshihiro Okuno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication42nd AIAA Plasmadynamics and Lasers Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624101472
DOIs
Publication statusPublished - 2011
Event42nd AIAA Plasmadynamics and Lasers Conference 2011 - Honolulu, HI, United States
Duration: 2011 Jun 272011 Jun 30

Publication series

Name42nd AIAA Plasmadynamics and Lasers Conference

Other

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

ASJC Scopus subject areas

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

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  • Cite this

    Kobayashi, H., Shionoya, H., & Okuno, Y. (2011). Influence of non-uniform magnetic flux density on turbulent MHD flows in a liquid metal MHD power generator. In 42nd AIAA Plasmadynamics and Lasers Conference (42nd AIAA Plasmadynamics and Lasers Conference). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2011-3602