基于非线性分析的非轴对称磁流体动力学建模  

Non-Axisymmetric Magnetohydrodynamics Modeling Based on Nonlinear Analysis

作　　者：张军[1] ZHANG Jun(West Anhui Health Vocational College, Lu'an 237005)

机构地区：[1]皖西卫生职业学院,安徽六安237005

出　　处：《常州工学院学报》2022年第3期39-43,共5页Journal of Changzhou Institute of Technology

基　　金：安徽高校自然科学研究项目(KJ2019A1255)。

摘　　要：传统的动力学建模方法对模型参数变化模拟效果不佳,为此,提出一种基于非线性分析的非轴对称磁流体动力学建模方法。构建磁流体动力学物理特征结构模型,分析非轴对称磁流体动力学特征;通过非线性分析方法确定磁流体中近阴离子、近阳离子的建模边界条件;引进麦克斯韦方程组,描述磁流体中等离子体相关参数,基于等离子体密度分布特征构建多相流方程;结合对磁流体力学的非线性分析,实现建模过程中动力学参数变化模拟,按照各个结构的设置方式,在ANSYS Fluent软件中实现对磁流体动力学模拟。实验结果表明,提出的动力学建模方法在应用到实际非轴对称磁流体结构当中可以实现对其动力学参数变化的精准模拟,方便对该动力学特征进行更加全面地分析。The traditional dynamics modeling method has poor simulation effect on the change of model parameters,thus,a non-axisymmetric magnetohydrodynamics(MHD)modeling method based on nonlinear analysis is proposed.The structural model of the physical characteristics of MHD is constructed to analyze the non-axisymmetric MHD characteristics.The nonlinear analysis method is adopted to determine the modeling boundary conditions of anion and cation in magnetic fluid.Maxwell's equations are introduced to describe the plasma parameters in magnetic fluid,and the multiphase flow equation is then constructed based on the distribution characteristics of plasma density.Combined with the nonlinear analysis of MHD,the simulation of the change of dynamic parameters in the modeling process is realized.According to the setting mode of each structure,the simulation of MHD is realized in ANSYSFluent software.The experimental results show that the proposed dynamic modeling method can accurately simulate the change of dynamic parameters when applied to the practical non-axisymmetric magnetofluid structures,thus contributing to a more comprehensive analysis of the dynamic characteristics.

关 键 词：非线性分析 非轴对称 磁流体 动力学建模 

分 类 号：O313[理学—一般力学与力学基础]