Massively parallel code named NEPTUNE for 3D fully electromagnetic and PIC simulations

被引：0

作者：

Dong Y. ^{[1
]}

Chen J. ^{[1
]}

Yang W. ^{[1
]}

Zhao Q. ^{[1
]}

Xia F. ^{[1
]}

Xiao L. ^{[1
]}

Ma Y. ^{[1
]}

Liao L. ^{[1
]}

Sun H. ^{[1
]}

Dong Z. ^{[1
]}

Zhou H. ^{[1
]}

Chen H. ^{[1
]}

Mo Z. ^{[1
]}

机构：

[1] Institute of Applied Physics and Computational Mathematics, Beijing 100088

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2011年 / 23卷 / 06期

关键词：

3D full electromagnetic and PIC simulation; High power microwave; Massively parallel code; NEPTUNE code;

D O I：

10.3788/HPLPB20112306.1607

中图分类号：

学科分类号：

摘要：

A massively parallel code named NEPTUNE for 3D fully electromagnetic and particle-in-cell(PIC) simulations is introduced, which can run on the Linux system with hundreds or even thousands of CPUs. NEPTUNE is capable of three-dimensional simulation of various typical high power microwave(HPM) devices. In NEPTUNE code, electromagnetic fields are updated by using finite-difference time-domain(FDTD) method to solve Maxwell equations and particles are moved by using Buneman-Boris method to solve the relativistic Newton-Lorentz equation. The electromagnetic fields and particles are coupled by using linear weighing interpolation PIC method, and the electric field components are corrected by using Boris method to solve the Poisson equation in order to ensure charge-conservation. NEPTUNE code can construct many complicated geometric structures, such as arbitrary axial-symmetric structures, plane transforming structures, slow-wave structures, coupling holes, and foils. The boundary conditions used in NEPTUNE code are briefly introduced, including perfectly electric conductor boundary, external wave boundary, and particle boundary. Finally, some typical HPM devices are simulated and tested by using NEPTUNE code, including magnetically insulated line oscillator, relativistic backward wave oscillator, virtual cathode oscilator, and relativistic klystron amplifier. The simulation results are presented with correct and credible physical images, and the parallel efficiencies are also given.

引用

页码：1607 / 1615

页数：8

共 19 条

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