标题:
用于Ginzburg-Landau超流体流动的格子Boltzmann模型Lattice Boltzmann Model for the Ginzburg-Landau
Superfluid Flows
作者:
张建影, 闫广武
关键字:
格子Boltzmann模型, 的Ginzburg-Landau超流体, 位势流《br》 Lattice Boltzmann Model; Ginzburg-Landau Superfluid; Potential Flow
期刊名称:
《International Journal of Fluid Dynamics》, Vol.1 No.1, 2013-03-28
摘要:
本文构造了用于模拟Ginzburg-Landau超流体流动的格子Boltzmann模型。通过给出复格子Boltzmann方程，以及应用复Chapman-Enskog展开，我们得到了复平衡分布函数满足的不同时间尺度上的系列偏微分方程。利用这些系列方程，我们得到了具有二阶截断误差的复Ginzburg-Landau方程。进一步引入速度势函数，得到了Ginzburg-Landau超流体流动的动力学方程。
In this paper, a lattice Boltzmann model for the Ginzburg-Landau superfluid flow is proposed. By using complex lattice Boltzmann equation and complex Chapman-Enskog expansion, we obtain a series of partial differential equations on the complex equilibrium distribution function in the different time scales, and the complex Ginzburg- Landau equation with the second-order truncation error. By employing the velocity potential function, we get the kinetic equations of the Ginzburg-Landau superfluid flow.