| 拉普拉斯变换下液固耦合问题的有限元计算 |
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| 引用本文： | 张系斌,黄玉盈.拉普拉斯变换下液固耦合问题的有限元计算[J].石油天然气学报,1997,19(3):109-111. |
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| 作者姓名： | 张系斌 黄玉盈 |
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| 作者单位： | [1]江汉石油学院建筑工程系 [2]华中理工大学力学系 |
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| 摘 要： | 对液固耦合问题进行了拉普拉斯变换，建立了拉普拉斯空间的泛函，导出了有限元方程，并采用快速傅里叶变换进行反演。算例结果表明，对液固耦合问题采用拉普拉斯变换的有限元计算有限元方程与拉普拉斯数值逆变换结合求解是行之有效的方法。
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| 关 键 词： | 流体力学 液固耦合 拉普拉斯变换 有限元 变分法 |
A Mixed FE/LT Method for Solving a Problem of Fluid Structure Interaction |
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| Zhang Xibin,Zhang Chuanli.A Mixed FE/LT Method for Solving a Problem of Fluid Structure Interaction[J].Journal of Oil and Gas Technology,1997,19(3):109-111. |
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| Authors: | Zhang Xibin Zhang Chuanli |
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| Abstract: | A finite element formul in Laplace transform space for analyzing fluid structure interaction problems is proposed. The functional and variational principles of Laplace space are described.The discretization of the variation principles leads to resolving equations for finite element. for a simple example,reservoir dam system is calculated trially to make use of displacement pressure form. The numerical results obtained are in good greement with the ones in reference and show that the proposed FE/LT method is efficient. |
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| Keywords: | fluid mechanics interaction of fluid structure dynamic response Laplace transform variational methods Finite element |
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