Influence of working fluid characteristics on the performance of a liquid metal magnetohydrodynamic generator

Liancheng Hu, Hiromichi Kobayashi, Yoshihiro Okuno

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We compare the electrical performance and fluid phenomena of a liquid metal magnetohydrodynamic (LMMHD) power generator equipping electrodes with a finite electrical conductivity by using four different working fluids: mercury, NaK78, Galinstan and U-alloy47. Three-dimensional unsteady numerical simulations of turbulent duct flows under a non-uniform magnetic field are carried out. The profiles of the Hartmann layer and the wall-jet flows with M-shaped mean streamwise velocity are varied in accordance with the interaction parameter, which diff ers for each working fluid. A large interaction parameter decreases the wall friction loss and improves electrical efficiency. The finite electrical conductivity of electrode causes Joule loss and leads to a deterioration of efficiency. These results lead to the conclusion that a liquid metal with a high interaction parameter and a low electrical conductivity for reducing the electrical conductivity ratio of the fluid to electrodes will yield high electrical efficiency.

本文言語English
ページ(範囲)973-979
ページ数7
ジャーナルIEEJ Transactions on Power and Energy
134
12
DOI
出版ステータスPublished - 2014 1 1

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 電子工学および電気工学

フィンガープリント

「Influence of working fluid characteristics on the performance of a liquid metal magnetohydrodynamic 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