CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2011, Vol. 28 ›› Issue (2): 243-249.
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LIU Dagang, ZHOU Jun, YANG Chao, MENG Lin
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Abstract: Mechanism of high-frequency noise in particle-in-cell(PIC) simulation is analysed.An effective finite-difference time-domain(FDTD) method called High_Q FDTD method is developed in which high-frequency noise is filtrated and high quality factor device is calculated with PIC simulation.Formulation of the method is derived on the basis of time-biased and centered-difference FDTD method.Stability and convergence of this method are well analysed.Filter efficiency and calculation precion of this method are compared with those of the time-biased and centered-difference FDTD method in computation of a relativistic backward wave oscillator(RBWO).
Key words: PIC simulation, FDTD method, high-frequency noise, relativistic particles
CLC Number:
O46
O24
LIU Dagang, ZHOU Jun, YANG Chao, MENG Lin. An Arithmetic for Filtrating High-frequency Noise in Particle-in-cell Simulation[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2011, 28(2): 243-249.
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http://www.cjcp.org.cn/EN/Y2011/V28/I2/243
