| 三维水下爆炸气泡的数值模拟 |
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| 引用本文： | 鲁传敬.三维水下爆炸气泡的数值模拟[J].航空学报,1996,17(1):90-93. |
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| 作者姓名： | 鲁传敬 |
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| 作者单位： | 上海交通大学工程力学系, 上海, 200030 |
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| 摘 要： | 在理想不可压势流假定下，采用高阶有限元离散边界积分方程求解水流场。假定泡内气体遵循等熵关系。用Ｅｕｌｅｒ－ｌａｇｒａｎｇｅ方法模拟气泡的演化。计算结果与球泡“精确解”及实验值比较，表明数学模型合理且三维数值方法精度高。计算给出气泡迁移、射流等重要动力学行为和物体受力分析
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| 关 键 词： | 水下爆炸 势流 边界积分法 有限元法 |
| 收稿时间： | 1994-01-19 |
| 修稿时间： | 1994-09-15 |
3-D NUMERICAL SIMULATION OF UNDERWATER EXPLOSION BUBBLES |
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| Lu Chuanjing.3-D NUMERICAL SIMULATION OF UNDERWATER EXPLOSION BUBBLES[J].Acta Aeronautica et Astronautica Sinica,1996,17(1):90-93. |
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| Authors: | Lu Chuanjing |
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| Institution: | Dept. of Engineering Mechanics,Shanghai Jiao Tong University,Shanghai,200030 |
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| Abstract: | The flow is solved by using the boundary integral equation method and the higher order finite element discretization on the assumption that the water is inviscid and incompressible,the flow is potential and the bubble gas obeys the isoentropic rule. The evolution of the bubble is simulated by means of a mixed Euler-lagrangian method. The comparison of the numerical results with the “exact solution” of a spheric bubble and experimental data shows that the mathematical model is reasonable and the 3-D numerical method has high accuracy.The dynamic load on the body and important behavior of the bubble,such as migration and jetting,are derived. |
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| Keywords: | underwater explosion potential flow boundary integral method finite element method |
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