Improvement of isentropic efficiency of a magnetohydrodynamic power generator by radio-frequency preionization

被引：5
|
作者：
Murakami, Tomoyuki [1 ]
Okuno, Yoshihiro [1 ]
机构：
[1] Tokyo Inst Technol, Dept Energy Sci, Midori Ku, Yokohama, Kanagawa 2268502, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 02期
基金：
日本学术振兴会;
关键词：
enthalpy; entropy; magnetohydrodynamic conversion; magnetohydrodynamic convertors; plasma magnetohydrodynamics; plasma thermodynamics; DISK MHD GENERATOR; INDUCTIVELY-COUPLED PLASMA; METAL VAPOR IONIZATION; FULLY IONIZED SEED; ELECTROMAGNETIC-FIELD; HYPERBOLIC-EQUATIONS; NUMERICAL-SIMULATION; PERFORMANCE; RECOMBINATION; EXTRACTION;
D O I：
10.1063/1.3068184
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We describe the effect of a radio-frequency (rf) power application on the performance of a magnetohydrodynamic (MHD) electrical power generator, as determined through shock-tunnel-based experiments and quasi-three-dimensional numerical simulations. The temporal plasma-fluid behavior, the one-dimensional plasma-fluid structure, the enthalpy-entropy diagram, the quality of the energy conversion efficiency, and the energy flow in the power-generating system are investigated. Preionization assistance by a small amount of rf power drastically changes the entire MHD power-generating system; the MHD extraction length is considerably extended and the isentropic efficiency is significantly improved.
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页数：8
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