| 水下爆炸冲击波和气泡脉动的数值模拟研究 |
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| 引用本文： | 胡毅亭,贾宪振,饶国宁,刘家骢.水下爆炸冲击波和气泡脉动的数值模拟研究[J].舰船科学技术,2009,31(2). |
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| 作者姓名： | 胡毅亭 贾宪振 饶国宁 刘家骢 |
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| 作者单位： | 南京理工大学,化工学院,江苏南京210094 |
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| 摘 要： | 运用AUTODYN程序对水下爆炸冲击波和气泡脉动进行了数值模拟研究.首先模拟了无限水域中的水下爆炸冲击波,然后将深水爆炸简化为一维问题,采用一维方法对深水爆炸冲击波和气泡脉动进行了数值模拟,并将模拟结果与经验公式和实验结果进行了比较.模拟结果表明,AUTODYN能准确模拟近场水下爆炸冲击波和深水爆炸气泡脉动过程,计算得到的近场水下爆炸冲击波峰值压力和比冲量、水质点速度、气泡最大半径、脉动周期、二次压力波的峰值压力和比冲量等特性参数均与经验公式、理论公式和实验结果吻合良好.远场的冲击波峰值压力的计算值小于经验值,而且计算误差随着爆距的增加而增大.最后总结了模拟结果,得出了对工程应用有益的结论.
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| 关 键 词： | 爆炸力学 水下爆炸 数值模拟 冲击波 气泡脉动 |
Numerical study of underwater explosion shock wave and bubble pulse |
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| HU Yi-ting,JIA Xian-zhen,RAO Guo-ning,LIU Jia-cong.Numerical study of underwater explosion shock wave and bubble pulse[J].Ship Science and Technology,2009,31(2). |
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| Authors: | HU Yi-ting JIA Xian-zhen RAO Guo-ning LIU Jia-cong |
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| Institution: | School of Chemical Engineering;Nanjing University of Science and Technology;Nanjing 210094;China |
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| Abstract: | Underwater explosion shock wave and bubble pulse were simulated by using the hydrocode AUTODYN.Firstly the shock wave induced by spherical charge exploding in infinite water region was simulated.Secondly the underwater explosion and following bubble pulses in deep water were simulated through one-dimensional method under certain assumptions.After compared calculation results with empirical formulas,theoretical formulas and experimental results,it can be concluded that AUTODYN can simulate much of the import... |
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| Keywords: | AUTODYN |
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