高功率微波器件2.5维通用粒子模拟软件——尤普

 利用体积加权宏粒子模型,考虑了阴极形状的爆炸电子发射模型、散度校正完全匹配层边界等新型和改进型电磁粒子模拟算法模型，提高了粒子模拟算法的计算精度，并有效降低数值噪声。在此基础上开发出2.5维全电磁通用粒子模拟软件——尤普，可在x-y，z-r和r-φ3种坐标系下应用于高功率微波器件的2.5维数值模拟研究和结构设计。对相对论磁控管、磁绝缘线振荡器和虚阴极振荡器等高功率微波器件的模拟结果表明：尤普软件得到了正确的物理图像和物理规律。

2.5-dimensional electromagnetic particle-in-cell code-UNIPIC for high power microwave simulations

Improved particle-in-cell(PIC) algorithms were proposed, including volume weighting cloud-in-cell model, geo-metry profile considered explosive electron emission model and divergence error diffused perfectly matched layer boundary, which increased the precision of the algorithm and decreased the numerical noise. Based on the improved models, an user-friendly, 2.5-dimensional PIC code UNIPIC has been developed, which could be used to simulate high power microwave source devices and used for their geometry optimization in x-y, z-r and r-φcoordinate systems. The simulation results of relativistic magnetron, magnetically insulated line oscillator, virtual cathode oscillator showed good physics image and beam-wave interaction characteristics.