首页|非线性时间分数阶空气动力学方程的格子Boltzmann研究

非线性时间分数阶空气动力学方程的格子Boltzmann研究

扫码查看
针对非线性时间分数阶空气动力学方程,提出了一种新的格子Boltzmann模型.通过使用Chapman-Enskog展开和时间多尺度展开技术,得到了一系列不同时间尺度上的系列偏微分方程.选择合适的平衡态分布函数的矩,恢复出宏观方程,数值模拟出非线性时间分数阶空气动力学方程的解.数值实验表明,格子Boltzmann方法是研究非线性时间分数阶空气动力学方程的有效工具.
Study of Nonlinear Time-Fractional Order Aerodynamic Equations with Lattice Boltzmann Method
In this paper,a new lattice Boltzmann model is proposed for nonlinear time fractional order aerodynamic equations.By using Chapman-Enskog expansion and time multiscale expansion techniques,a series of partial differential equations on different time scales are obtained.The macroscopic equations are recovered by choosing appropriate moments of the equilibrium state distribution function,and the solutions of the nonlinear time-fractional order aerodynamic equations are simulated numerically.Numerical experiments show that the lattice Boltzmann method is an effective tool for studying the nonlinear time-fractional order aerodynamic equations.

lattice Boltzmann methodnonlinear time-fractional order aerodynamic equationsnumerical simulation

王慧敏、陈恒佳

展开 >

吉林财经大学应用数学学院,吉林长春 130117

格子Boltzmann方法 非线性时间分数阶空气动力学方程 数值模拟

2024

长春师范大学学报
长春师范学院

长春师范大学学报

CHSSCD
影响因子:0.312
ISSN:1008-178X
年,卷(期):2024.43(10)