新型驱动线圈温度场和流场耦合仿真研究

摘要

Synchronous induction coil gun is one of electromagnetic launchers, an important aspect in electromagnetic emission area at home and abroad, and is also an importance in the beforehand study of the new concept weapons in our country's army. It has good controllability, high emission efficiency, low cost, simple deskbound protection, high safety and so on, so it has a good applied prospect. For driven coil in coilgun, based on flow - solid coupling method, both solid calculation zone and flow calculation zone were coupled, flow - solid conjugate heat transfer mathematical model of drive coil was set up. And using AN-SYS CFX software, temperature distribution of drive coil and cooling system was analysed, and different speed of coolant influenced the temperature distribution of drive coil and cooling system. The results indicate: when the speed of coolant increases, the temperature of drive coil decrease. And from the temperature distribution, the lowest temperature zone is in gateway of coolant; the maximum temperature zone is in exit of coolant.%同步感应线圈炮是线圈型电磁发射器中的一种,是目前国内外电磁发射领域研究中的一个重要方向,也是我军新概念武器预先研究的重点.它具有发射过程可控性好、发射效率高、成本低以及后勤保障简单、安全性高等特点,具有广泛的应用前景.以驱动线圈为研究对象,采用热-流-固耦合的研究方法,将传统的温度场计算方法割裂的固体计算区域和流体计算区域耦合在一起,建立了统一的流固共轭传热数学模型.并且使用了ANSYSCFX计算软件,计算了驱动线圈和冷却系统的温度分布规律,讨论了不同速度的冷却介质对驱动线圈温度的影响.研究表明:随着冷却油进口速度的不断增加,驱动线圈的温升逐渐减少,并且从温度场分布来看,由于冷却油的温度在入口处较低,流速最大,因此最低温度出现在入口处,最高温度出现在出口处.