scholarly journals Analysis of ion noise with beam-wave interaction in klystron by two dimensional particle simulation method

2006 ◽  
Vol 55 (10) ◽  
pp. 5368
Author(s):  
Gong Hua-Rong ◽  
Gong Yu-Bin ◽  
Wei Yan-Yu ◽  
Tang Chang-Jian ◽  
Xue Dong-Hai ◽  
...  
Keyword(s):  
Wave Interaction ◽  
Simulation Method ◽  
Particle Simulation ◽  
Two Dimensional ◽  
Beam Wave ◽  
Particle Simulation Method ◽  
Beam Wave Interaction

A Computationally Efficient Two-Dimensional Model of the Beam–Wave Interaction in a Coupled-Cavity TWT

2012 ◽  
Vol 40 (6) ◽  
pp. 1575-1589 ◽  
Author(s):  
Alexander N. Vlasov ◽  
Thomas M. Antonsen ◽  
Igor A. Chernyavskiy ◽  
David P. Chernin ◽  
Baruch Levush
Keyword(s):  
Wave Interaction ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Computationally Efficient ◽  
Beam Wave ◽  
Two Dimensional Model ◽  
Beam Wave Interaction ◽  
Coupled Cavity

Particle Simulation of Slow-Wave System in Multi-Beam Traveling Wave Tube

2012 ◽  
Vol 155-156 ◽  
pp. 381-385
Author(s):  
Ze Lun Li ◽  
You Jun Huang ◽  
Zhi Cheng Huang
Keyword(s):  
Traveling Wave ◽  
Wave Interaction ◽  
Particle Simulation ◽  
Time Dependent ◽  
Wave System ◽  
Traveling Wave Tube ◽  
Wave Tube ◽  
Beam Wave ◽  
Magnetic Focusing ◽  
Beam Wave Interaction

A time-dependent particle code has been developed to simulate the motion and changing regularity of particles in multi-beam traveling wave tube. Magnetic focusing and interaction models of multi-beam traveling tube were established, and static magnetic field was calculated. The process of bunching particles by periodic permanent magnetic focusing system and beam-wave interaction was also simulated. The results show that particle simulation can really reflect the motion of particles in multi-beam traveling wave tube, which can provide some references for particle study of traveling wave tube.

Thermo-mechanical coupling particle simulation of three-dimensional large-scale non-isothermal problems

2017 ◽  
Vol 34 (5) ◽  
pp. 1551-1571 ◽  
Author(s):  
Ming Xia
Keyword(s):  
Large Scale ◽  
Three Dimensional ◽  
Simulation Method ◽  
Particle Simulation ◽  
Similarity Criteria ◽  
Particle Model ◽  
Length Scale ◽  
Content Type ◽  
Mechanical Coupling ◽  
Particle Simulation Method

Purpose The main purpose of this paper is to present a comprehensive upscale theory of the thermo-mechanical coupling particle simulation for three-dimensional (3D) large-scale non-isothermal problems, so that a small 3D length-scale particle model can exactly reproduce the same mechanical and thermal results with that of a large 3D length-scale one. Design/methodology/approach The objective is achieved by following the scaling methodology proposed by Feng and Owen (2014). Findings After four basic physical quantities and their similarity-ratios are chosen, the derived quantities and its similarity-ratios can be derived from its dimensions. As the proposed comprehensive 3D upscale theory contains five similarity criteria, it reveals the intrinsic relationship between the particle-simulation solution obtained from a small 3D length-scale (e.g. a laboratory length-scale) model and that obtained from a large 3D length-scale (e.g. a geological length-scale) one. The scale invariance of the 3D interaction law in the thermo-mechanical coupled particle model is examined. The proposed 3D upscale theory is tested through two typical examples. Finally, a practical application example of 3D transient heat flow in a solid with constant heat flux is given to illustrate the performance of the proposed 3D upscale theory in the thermo-mechanical coupling particle simulation of 3D large-scale non-isothermal problems. Both the benchmark tests and application example are provided to demonstrate the correctness and usefulness of the proposed 3D upscale theory for simulating 3D non-isothermal problems using the particle simulation method. Originality/value The paper provides some important theoretical guidance to modeling 3D large-scale non-isothermal problems at both the engineering length-scale (i.e. the meter-scale) and the geological length-scale (i.e. the kilometer-scale) using the particle simulation method directly.

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