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应用电磁场理论和有限元分析方法，系统地分析了远场涡流中能量流的变化规律，并重点讨论了似稳态激励和瞬态激励两种情况下的扩散能量流的似波特性．研究结果表明，能流分界线可以形象地表示能量在一个周期内的变化规律；能量变化与源的变化之间有一个时间滞后，呈现了似波特性．
The electromagnetic field theory and the finite element analysis method were used to systematically analyze the variation of the energy flow in the far-field vortex and to focus on the simulacrum of the diffusive energy flow in both the steady-state excitation and the transient excitation. The results show that the boundary of energy flow can vividly show the variation of energy in one cycle. There is a time lag between energy change and source change, which shows the characteristics of wave-like.