In this paper, a novel structure of electromagnetic pump to efficiently drive metal fluid was proposed, which can be called layered stack electromagnetic pump. Firstly, the coupled interaction mechanism of multi-physics fields was numerically interpreted, and the parameter optimizations of DC-EMP were systemically conducted. The optimization results show that inserting insulation bars can significantly reduce current dissipation by 69.7% in center line. And using closed iron yoke is beneficial to obtain a strong and uniform magnetic field. Moreover, the low flow duct is good to obtain a large pressure head. Based on the optimization results, a five layer structure of flow duct was provided. And a prototype was fabricated and tested. It shows that such pump can provide pressure head 120 kPa @ 300 A and maximum flow rate 6.9 L/min @300 A. It works smoothly and silently, and even, can operate steadily after two year intermittent operation. And this pump operation temperature was limited below 120 °C. Finally, the challenges unsolved and further optimization measures were suggested. Overall, the layered stack DC-EMP presented here enables liquid metal to be rather promising heat transfer fluid in advancing the field of extreme heat flux heat dissipation and thermal energy transportation.

提出了一种新型的高效驱动金属流体的电磁泵结构，可以称之为叠层式电磁泵。首先，对多物理场的耦合相互作用机理进行了数值解释，并系统地进行了DC-EMP的参数优化。优化结果表明，插入绝缘棒可以显着降低中心线中的电流损耗69.7％。使用封闭的铁轭有利于获得强而均匀的磁场。此外，低流量管道有利于获得较大的压头。基于优化结果，提出了一种五层的流道结构。并制造了原型并进行了测试。它表明这种泵可以在300 A时提供120 kPa的压头，在300 A时提供最大流量6.9 L / min。它可以平稳，安静地工作，甚至可以在两年间歇运行后稳定运行。并且该泵的工作温度限制在120°C以下。最后，提出了尚未解决的挑战，并提出了进一步的优化措施。总体而言，此处介绍的分层堆栈DC-EMP使液态金属成为推动极热通量散热和热能传输领域的有希望的传热流体。