移动式电磁轨道发射器的新型电热模拟方法

IF 1.8 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Changfan Yang;Qiang Ren;Fei Dai;Junsheng Cheng;Ling Xiong;Pengyu Li
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引用次数: 0

摘要

近年来,电磁轨道发射器(ERL)技术因其卓越的性能在发射系统领域受到广泛关注。在ERL系统运行过程中,大量脉冲电流流经系统,使衔铁在极短的时间内急剧加速到很高的速度,同时伴随着温度的快速上升。这一过程涉及复杂的多物理现象,给 ERL 系统的设计和仿真带来了挑战。我们提出了一种通过电磁-热运动学循环对 ERL 发射过程进行动态仿真的解决方案。在电热耦合模拟中,考虑了与温度相关的电导率。电流产生的焦耳热被用作温度场的热源,从而提高了热模拟的精度。在电磁运动学循环中,对作用在衔铁上的洛伦兹力进行积分,直接模拟 ERL 推进器的受力情况。基于所设计的 ERL 系统多物理场动态模拟程序,通过方形和 C 型电枢 ERL 系统的模拟以及实验室测量,验证了所提出方法的准确性。由于不受控制方程和求解过程的限制,所提出的方法可以灵活地模拟 ERL 系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Electro-Thermal Simulation Approach for Moving Electromagnetic Rail Launchers
In recent years, the electromagnetic rail launcher (ERL) technology has garnered widespread attention in the field of launch systems due to its outstanding performance. During ERL system operation, a large pulsed electric current flows through the system, sharply accelerating the armature to a high speed within an extremely short period, accompanied by a rapid temperature increment. This process involves complex multi-physical phenomena, posing challenges to the design and simulation of ERL systems. We propose a dynamic simulation solution for the ERL launch process through an electromagnetic-thermal-kinematics cycle. In the electric-thermal coupling simulation, the temperature-dependent electrical conductivity is considered. Joule heat produced by current is employed as the heat source for the temperature field, enhancing the accuracy of the thermal simulation. In the electromagnetic-kinematics cycle, integrating the Lorentz force acting on the armature directly simulates the force situation of the ERL propulsion. Based on the designed dynamic simulation process for the multi-physics fields of ERL systems, the accuracy of the proposed method has been validated through simulations involving square and C-type armature ERL systems, as well as laboratory measurements. Unrestricted by the limitations of control equations and solution processes, the proposed method enables flexible simulation of ERL systems.
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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
27
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