| 基于格子玻耳兹曼的等离子射流场数值模拟 |
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| 引用本文： | 王桂兰,朱杰英,张海鸥.基于格子玻耳兹曼的等离子射流场数值模拟[J].华中科技大学学报(自然科学版),2003,31(6):1-3. |
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| 作者姓名： | 王桂兰 朱杰英 张海鸥 |
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| 作者单位： | 华中科技大学塑性成形模拟及模具技术国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 0 75 0 3 2 )，国家高技术研究发展计划资助项目 (2 0 0 1AA42 115 0 ) |
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| 摘 要： | 采用格子玻耳兹曼(LB)方法建立了等离子射流温度场和速度场的计算模型，与传统数值方法相比，LB方法具有直观的物理背景．用正六边形7-bit网格划分计算区域，通过选取适当的两套平衡分布函数和采用Chapman-Enskog展开及多尺度技术导出了等离子射流场的宏观方程，并将计算结果与已有文献的实验结果进行了比较，验证了计算模型的有效性；计算结果表明，减小紊流粘度可以提高射流的能量密度和有效长度．
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| 关 键 词： | 大气等离子射流 格子玻耳兹曼 数值模拟 |
| 文章编号： | 1671-4512(2003)06-0001-03 |
| 修稿时间： | 2003年1月14日 |
Numerical simulation of plasma jet by Lattice Boltzmann method |
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| Wang Guilan,Zhu Jieying,Zhang Haiou.Numerical simulation of plasma jet by Lattice Boltzmann method[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(6):1-3. |
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| Authors: | Wang Guilan Zhu Jieying Zhang Haiou |
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| Institution: | Wang Guilan Zhu Jieying Zhang Haiou |
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| Abstract: | A model for calculating the velocity and temperature field of plasma jet by Lattice Boltzmann (LB) method was established. Hexagonal 7 bit grid was employed to divide the calculating field. The macro functions were derived by selecting two opportune equilibrium distribution functions and by using Chapman Enskog expansion and multi scale expansion. The method was valid when the results were compared with those of the conventional ones. It was shown that the energy density and the plasma jet length can be increased by reducing flow turbulent viscosity at exit. |
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| Keywords: | atomospheric plasma jet Lattice Boltzmann numerical simulation |
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