The Effects of Plasma Fluctuation in MHD Generators (Studies with a Numerical Turbulence Model)

Naoyuki KAYUKAWA

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The Effects of Plasma Fluctuation in MHD Generators (Studies with a Numerical Turbulence Model)

机译：MHD发生器中等离子体波动的影响（带有数值湍流模型的研究）

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摘要

The effects of the spatiotemporal inhomogeneity of a plasma in thermal equilibrium on the local and output characteristics of a Faraday-type MHD generator were investigated using numerically modeled turbulent velocity and temperature data. The conditions of Saha equilibrium in the range of the mean temperature level and the maximum turbulent frequency were given. The mean conductivity formula was also given as a function of the rms fluctuation. The average correlations between the electric field fluctuations and those of the conductivity in the mean Ohm's law were evaluated in terms of the mean electrical parameters. Rosa's G-factor was modified to include the spatiotemporal conductivity variance. It was shown that the one-dimensional anisotropic model somewhat underestimates the effective resistance of the turbulent MHD plasma with a two-dimensional anisotropy.

机译：使用数值模拟的湍流速度和温度数据，研究了热平衡中等离子体的时空不均匀性对法拉第型MHD发生器的局部和输出特性的影响。给出了平均温度水平和最大湍流频率范围内的萨哈平衡条件。还给出了平均电导率公式作为均方根波动的函数。根据平均电参数评估了电场波动和平均欧姆定律中电导率之间的平均相关性。 Rosa的G因子已修改为包括时空电导率变化。结果表明，一维各向异性模型在某种程度上低估了具有二维各向异性的湍流MHD等离子体的有效阻力。

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来源
《JSME International Journal. Series B, Fluids and Thermal Engineering》 |1995年第3期|p.366-373|共8页
作者
Naoyuki KAYUKAWA;
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作者单位

Center for Advanced Research of Energy Technology, Hokkaido University, Kita-ku, Kita 13, Nishi 8, Sapporo 060, Japan;

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原文格式 PDF
正文语种 eng
中图分类机械学（机械设计基础理论）;能源与动力工程;
关键词
MHD power generation; combustion plasma; turbulence; correlation; effective conductivity;

机译：MHD发电;燃烧等离子体;湍流;相关性;有效电导率;

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The Effects of Plasma Fluctuation in MHD Generators (Studies with a Numerical Turbulence Model)

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