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首页> 外文会议>PAMIR conference on transfer phenomena in magnetohydrodynamic and electroconducting flows >Measurement of solute diffusivity in electrically conducting liquids
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Measurement of solute diffusivity in electrically conducting liquids

机译：导电液体溶质扩散率测量

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摘要

The use of a magnetic field in the measurement of diffusion coefficients in liquid metals or semi-conductors is analyzed. Previous studies have demonstrated the disturbing influence of buoyancy-driven convection on the species transport in the shear-cell technique. A theory of effective diffusivity was proposed to account for the convective part of the transfer (GBD95). The idea developed her is to combine this effective diffusivity with the Lorentz electromagnetic damping of convection. The expected influence of the magnetic field is that the convective contribution should scale as Ha~(-4). Experiments were carried out and, for a small convection level, this magnetic influence was confirmed. It is suggested that a strong steady magnetic field could enable the precise measurement of liquid metal alloys diffusivities. The present analysis gives the required magnetic field magnitude.
机译：分析了在液体金属或半导体中测量扩散系数的测量中的使用。以前的研究表明，浮力驱动对对对剪切 - 细胞技术在物种运输上的令人不安的影响。提出了一种有效扩散率理论，以解释转让的对流部分（GBD95）。这一想法开发了她与对流的洛伦兹电磁阻尼结合这种有效的扩散率。磁场的预期影响是对流贡献应该是HA〜（-4）。进行实验，并且对于小的对流水平，确认这种磁影影响。建议强的稳态磁场可以使液态金属合金扩散性的精确测量能够实现。本分析给出了所需的磁场幅度。

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