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arXiv 2407.02470physics.flu-dyn
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液态金属填充沟槽中的热电磁流体动力学流动

Thermoelectric magnetohydrodynamic flow in a liquid metal-infused trench

Oliver George Bond, Peter Denis Howell

AI总结:

本研究建立液态锂在固体金属沟槽中受热通量驱动的稳态单向 TEMHD 流动模型,结合 COMSOL 有限元数值模拟与大 Hartmann 数、薄壁极限下的匹配渐近展开,揭示参数对速度、磁场和温度及流动结构的影响。

摘要:

我们推导了一个数学模型,用于描述液态锂沿固体金属沟槽在施加热通量条件下的稳态、单向热电磁流体动力学(TEMHD)流动。我们采用在 COMSOL Multiphysics 中实现的有限元方法对该问题进行数值求解,展示了流体速度、感应磁场和温度如何随关键物理参数和几何参数变化。通过使用匹配渐近展开法,在 Hartmann 数较大且沟槽壁较薄的极限下获得近似解,从而阐明观察到的流动结构。

英文摘要:

We derive a mathematical model for steady, unidirectional, thermoelectric magnetohydrodynamic (TEMHD) flow of liquid lithium along a solid metal trench, subject to an imposed heat flux. We use a finite-element method implemented in COMSOL Multiphysics to solve the problem numerically, demonstrating how the fluid velocity, induced magnetic field and temperature change depending on the key physical and geometrical parameters. The observed flow structures are elucidated by using the method of matched asymptotic expansions to obtain approximate solutions in the limit where the Hartmann number is large and the trench walls are thin.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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