An Inverse-based Multifrontal Block ILU preconditioner for the 3D finite-element eigenvalue analysis of lossy SWSs

被引：0
|
作者：
Wang, Hao [1 ]
Xu, Li [1 ]
Li, Jianqing [1 ]
Li, Bin [1 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Vacuum Elect, Sch Phys Elect, 4,Sect 2,North Jianshe Rd, Chengdu 610054, Peoples R China
来源：
2015 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) | 2015年
关键词：
Slow-wave structure; traveling-wave tube; finite element method; multifrontal method; ILU; TRAVELING-WAVE TUBES;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a novel inverse-based multi/rantal block ILU preconditioner is praposed, which is derived from the complete multi/rantal method and the inverse-based dropping strategy. The new preconditioner is used to solve the large-scale complex unsymmetric linear systems arising from the 3D finite element eigenvalue analysis of lossy slow-wave structures of traveling-wave tubes. In the simulations of many slow-wave structures, the 3D finite element eigenvalue analysis of lossy slow-wave structures based on this pre conditioner has shown the high-efficiency computational performance and the low memory requirement. It is shown that this novel preconditioner is very useful to design the lossy slow-wave structures for high-efficiency traveling-wave tubes.
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