强激光与粒子束, 2010, 22 (9): 2103, 网络出版: 2010-09-21   

3维并行全电磁粒子模拟软件UNIPIC-3D

Three-dimensional parallelized fully-electromagnetic particle simulation code UNIPIC-3D
作者单位
1 西北核技术研究所, 西安 710024
2 西安交通大学 教育部物理电子与器件重点实验室, 西安 710049
摘要
介绍了自行研制的3维并行全电磁粒子模拟软件UNIPIC-3D。在该软件中,电磁场量用二阶精度的时域有限差分方法迭代,粒子用相对论牛顿-洛仑兹力方程推进。该软件拥有复杂器件的几何建模和网格自动剖分的功能,具有模拟相对论返波管、虚阴极振荡器、磁绝缘线振荡器等高功率微波器件的能力。且该软件具有强大的后处理功能,可以显示电场、磁场、电流、电压、功率、频谱、粒子相空间等。在高性能并行计算机上对软件的并行效率进行了测试。通过与2.5维UNIPIC软件的结果进行比较,验证了UNIPIC-3D软件的正确性。
Abstract
This paper introduces a self-developed, three-dimensional parallelized fully-electromagnetic particle simulation code UNIPIC-3D. In the code, the electromagnetic fields are updated using the second-order, finite-difference time-domain(FDTD) method, and the particles are moved using the relativistic Newton-Lorentz force equation. The code can be used to simulate the high-power microwave(HPM) devices, such as the relativistic backward wave oscillator, coaxial vircator, and magnetically insulated line oscillator(MILO), etc. Users can use the graphical user’s interface to create complex geometric structures of the simulated HPM devices, which can be automatically meshed by UNIPIC-3D code. The code has a powerful post-processor which can display the electric field, magnetic field, current, voltage, power, spectrum, and momentum of particles. The parallelization efficient of this code has been tested on a high performance computer. To verify the results calculated by UNIPIC-3D code, the results computed by using the 2.5-dimensional UNIPIC code are also provided for the same parameters of HPM device, the numerical results computed with these two codes agree well with each other.

陈再高, 王建国, 张殿辉, 王玥, 刘纯亮, 李永东, 王洪广, 乔海亮, 袁媛. 3维并行全电磁粒子模拟软件UNIPIC-3D[J]. 强激光与粒子束, 2010, 22(9): 2103. Chen Zaigao, Wang Jianguo, Zhang Dianhui, Wang Yue, Liu Chunliang, Li Yongdong, Wang Hongguang, Qiao Hailiang, Yuan Yuan. Three-dimensional parallelized fully-electromagnetic particle simulation code UNIPIC-3D[J]. High Power Laser and Particle Beams, 2010, 22(9): 2103.

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