| 用混合H－φ法计算三维瞬态涡流场 |
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| 引用本文： | 阮江军,陈贤珍,周克定. 用混合H－φ法计算三维瞬态涡流场[J]. 电工技术学报, 1996, 0(1) |
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| 作者姓名： | 阮江军 陈贤珍 周克定 |
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| 作者单位： | 华中理工大学 |
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| 摘 要： | 本文用混合棱边有限元一节点边界积分法对三维瞬态涡流场进行了数值分析计算。在涡流区以磁场强度Ｈ为状态变量，在非涡流区以简化磁标量位φ为状态变量。当非涡流区为广阔域或无界域时，和通常的有限元法相比，这种混合方法只需较少的变量，节省内存，适用于复杂煤质条件和复杂边界条件的涡流电磁场数值计算。同时，对Ｈ的直接计算减少了因借助位量计算所带来的微分误差。本文还分析了外部刚度矩阵的形成以及边界积分方程的奇异性。最后给出一个计算实例。
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| 关 键 词： | 涡流，边界元法，数值计算 |
3D Transient Eddy Current Calculation by the Mixed FEM-BIM with Edge-Element Method |
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| Ruan Jiangjun,Chen Xianzhen,Zhou Keding. 3D Transient Eddy Current Calculation by the Mixed FEM-BIM with Edge-Element Method[J]. Transactions of China Electrotechnical Society, 1996, 0(1) |
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| Authors: | Ruan Jiangjun Chen Xianzhen Zhou Keding |
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| Affiliation: | Huazhong Univenity of Science and Technology |
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| Abstract: | The 3D transient eddy current problem is solved by mixed FEM-BIM with edge element discretization method. The eddy current control equations are formulated in terms of H and &. Compared with classical nodal finite element method, it needs much lees variables and is yely suitable to deal with unbounded eddy flee region situations.The constructions for hexahedra, or more specifically,for isoporamatric bricksare shown.An example about 3D eddy current field calculation is presented at the end of this peper. |
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| Keywords: | Eddy current field Edge element methodBoundary integral method |
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