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首页> 外文期刊>Journal of visualization >Magnetothermal Wind Visualized by Numerical Computation
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Magnetothermal Wind Visualized by Numerical Computation

机译：磁热风的数值计算可视化

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This study describes the numerical evaluation of the transient and steady state characteristics of a magnetothermal wind created by the Kelvin force inside the bore space of a superconducting magnet. The model system designed to evaluate the present numerical computations is composed of two coaxial circular pipes with open ends. The outer pipe, acting as the cooling pipe, corresponds to the bore space of the super-conducting magnet, while the inner pipe, acting as the heating pipe, is installed inside this bore space. The vertical magnetic gradient generated in the bore space as a source of the Kelvin force was replaced by that generated by the electric current circulating within the circular electric coil. The computed results indicated that the generation direction, the flow rate, and the flow pattern of the magnetothermal wind strongly depended on the position of the circular electric coil. For instance, when the circular electric coil was placed at the lower end of the heating region, the free convection was accelerated by the Kelvin force and an upward magnetothermal wind with a maximum flow rate was created. On the other hand, when the circular electric coil was placed at the upper end of the heating region, the free convection was suppressed by the Kelvin force and a downward magnetothermal wind was created.
机译：这项研究描述了由超导磁体的孔腔内部的开尔文力产生的磁热风的瞬态和稳态特性的数值评估。设计用于评估当前数值计算的模型系统由两个带开口端的同轴圆形管组成。用作冷却管的外管对应于超导磁体的孔腔，而用作加热管的内管则安装在该孔腔内。在开孔空间中作为开尔文力的来源产生的垂直磁梯度被在圆形线圈内循环的电流所产生的磁梯度所代替。计算结果表明，磁热风的产生方向，流率和流型很大程度上取决于圆形电线圈的位置。例如，当将圆形电线圈放置在加热区域的下端时，通过开尔文力加速自由对流，并产生具有最大流速的向上的磁热风。另一方面，当将圆形电线圈放置在加热区域的上端时，通过开尔文力抑制自由对流，并且产生向下的磁热风。

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