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Diamagnetically Enhanced Electrolysis and Phase Separation in Low Gravity
Journal of Spacecraft and Rockets ( IF 1.6 ) Pub Date : 2021-07-28 , DOI: 10.2514/1.a35021
Álvaro Romero-Calvo 1 , Hanspeter Schaub 1 , Gabriel Cano-Gómez 2
Affiliation  

The management of fluids in space is complicated by the absence of relevant buoyancy forces. This raises significant technical issues for two-phase flow applications. Different approaches have been proposed and tested to induce phase separation in low gravity; however, further efforts are still required to develop efficient, reliable, and safe devices. The employment of diamagnetic buoyancy is proposed as a complement or substitution of current methods and as a way to induce the early detachment of gas bubbles from their nucleation surfaces. The governing magnetohydrodynamic equations describing two-phase flows in low gravity are presented with a focus on bubble dynamics. Numerical simulations are employed to demonstrate the reachability of current magnets under different configurations, compare diamagnetic and Lorentz forces on alkaline electrolytes, and suggest scaling up procedures. The results support the employment of new-generation centimeter-scale neodymium magnets for electrolysis, boiling, and phase separation technologies in space, which would benefit from reduced complexity, mass, and power requirements.



中文翻译:

低重力下的抗磁增强电解和相分离

由于缺乏相关的浮力,空间中的流体管理变得复杂。这对两相流应用提出了重要的技术问题。已经提出并测试了不同的方法来诱导低重力下的相分离;然而,仍然需要进一步努力开发高效、可靠和安全的设备。提出使用抗磁浮力作为当前方法的补充或替代,并作为诱导气泡从其成核表面早期脱离的方式。介绍了描述低重力下两相流的控制磁流体动力学方程,重点是气泡动力学。数值模拟被用来证明当前磁铁在不同配置下的可达性,比较碱性电解质上的抗磁力和洛伦兹力,并建议扩大程序。结果支持将新一代厘米级钕磁铁用于太空中的电解、沸腾和相分离技术,这将受益于降低的复杂性、质量和功率要求。

更新日期:2021-07-29
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