| 基于AUTODYN的气泡与固定壁面相互作用数值模拟 |
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| 引用本文： | 张伟,岳永威,张阿漫,孙龙泉.基于AUTODYN的气泡与固定壁面相互作用数值模拟[J].中国舰船研究,2012(6):23-30. |
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| 作者姓名： | 张伟 岳永威 张阿漫 孙龙泉 |
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| 作者单位： | [1]中国舰船研究设计中心,湖北武汉430064 [2]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 |
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| 基金项目： | 国家自然科学基金资助项目（51009035,50939002）;国家自然科学基金委员会一中国工程物理研究院联合基金项目（10976008）;第十二届霍英东教育基金项目（121073）;新世纪优秀人才支持计划（NCET-0054） |
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| 摘 要： | 阐述了AUTODYN软件模拟水下爆炸气泡的原理及过程,通过球对称模型以及重力场中气泡的实验数据与AUTODYN计算结果的对比,验证其在计算气泡脉动时间和压力等方面的计算精度,并以此为基础研究近壁面水下爆炸气泡的动力学特征以及影响因素,包括无量纲距离对气泡形状的影响,固壁面对气泡最大半径、脉动周期和射流时间的影响,以及近固壁面气泡射流速度及压力的变化等,总结相关规律,为气泡的数值模拟研究提供参考。
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| 关 键 词： | 水下爆炸 气泡 AUTODYN 脉动 射流 固壁面 |
Numerical Simulation of Underwater Explosion Bubble Interactions with a Solid Boundary Based on AUTODYN |
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| ZHANG Wei,YUE Yong-wei,ZHANG A-man,SUN Long-quan.Numerical Simulation of Underwater Explosion Bubble Interactions with a Solid Boundary Based on AUTODYN[J].Chinese Journal of Ship Research,2012(6):23-30. |
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| Authors: | ZHANG Wei YUE Yong-wei ZHANG A-man SUN Long-quan |
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| Institution: | 1 China Ship Development and Design Center, Wuhan 430064, China 2 College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China |
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| Abstract: | This paper introduces the principle and procedures of using AUTODYN to numerically simulate gas bubbles produced by underwater explosions. By comparing the experimental data to the simulated resuits concerning the spherically symmetric model and its gravity field, the accuracy of AUTODYN in calculating pulsation time, pressure, and other parameters are validated. Then, the dynamics characteristic of underwater explosion gas bubbles near a solid boundary is analyzed, including various factors that affect bubble shapes, maximum radius, pulsation period and impact time. The variation in velocity and pressure of the bubble jet is also discussed. |
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| Keywords: | underwater explosion bubble AUTODYN pulse jet solid boundary |
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