基于格子玻尔兹曼方法的可激发系统物理性质研究

Research on physical property of the excitation system based on Lattice Boltzmann method

基于格子玻尔兹曼方法的D2Q9模型,研究可激发系统的能量和熵.数值计算结果表明:相同系统参数下,不同稳定波态系统的平均能量值接近,但熵值不同;在螺旋波失稳进入混沌态过程中,系统内能急剧减少,熵值增加;系统能量不足是螺旋波失稳的主要原因.

Based on D2Q9 model of Lattice Boltzmann method, the energy and entropy in the Selkov reaction-diffusion system were studied in the paper. The numerical results showed that under the same system parameters the average energy value of the various steady wave states system was approximate, but their systemic entropy was different. In the process of the breakup of the spiral wave and evolving into the chaotic state, the energy of system decreased drastically, while the entropy increased. The lack of system energy was the primary cause of the spiral wave instability.