| 多孔介质中热对流二次分岔的数值分析 |
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| 引用本文： | 徐世英,冯长根.多孔介质中热对流二次分岔的数值分析[J].北京理工大学学报,1999,19(1):4-7. |
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| 作者姓名： | 徐世英 冯长根 |
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| 作者单位： | 北京理工大学机电工程系 |
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| 摘 要： | 目的 进行了多孔介质中热对流二次分岔的数值分析。方法 采用了扩展方程方法，此方法无需求解原动力学方程和辅助参数。结果 得到了长度比为１￣√２矩形区域内多孔介质中热对流二次分岔点的Ｒａｙｌｅｉｇｈ数及相应的流场和温度场分布。结论 所给方法对确定二次分岔点是有效的。
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| 关 键 词： | 多孔介质 二次分岔 扩充方程组 对称性 |
| 修稿时间： | 1997-12-12 |
Numerical Analysis of Secondary Bifurcations of Thermal Convertional Flow in Porous Media |
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| Xu Shiying,Feng Changgen,Liu Zhaomiao.Numerical Analysis of Secondary Bifurcations of Thermal Convertional Flow in Porous Media[J].Journal of Beijing Institute of Technology(Natural Science Edition),1999,19(1):4-7. |
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| Authors: | Xu Shiying Feng Changgen Liu Zhaomiao |
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| Abstract: | Aim To give a numerical analysis of secondary bifurcations of thermal convertional flow in porous media. Methods The method is based on an extended equations which do not involve the dynamic equations and auxiliary parameter. Results The dependences of Rayleigh number, flow and temperature fields in the secondary bifurcation points on the aspect ratio of rectanguler porous media were obtained. Conclusion The method is effective in determining the points of secondary bifurcations of thermal convertional flow in porous media. |
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| Keywords: | porous media secondary bifurcation extended equations symmetry |
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