Numerical simulation of column charge underwater explosion based on SPH and BEM combination
Numerical simulation of column charge underwater explosion based on SPH and BEM combination
复制标题
基于SPH和BEM组合的柱装药水下爆炸数值模拟
DOI：
10.1016/j.compfluid.2012.10.012
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
Fu-ren Ming
中科院分区：
文献类型：
--
作者：
Zhang A-man;Yang Wen-shan;Chao Huang;Fu-ren Ming
柱状装药水下爆炸能产生超高压冲击波、气泡脉冲和气泡形成的高速射流。其物理过程涉及瞬变、高温高压、大变形、多介质流动等复杂问题。为此，本文建立了轴对称光滑粒子流体力学(SPHS)数值模型，并结合边界元方法(BEM)对柱状装药水下爆炸全过程进行了数值模拟。激波传播、气泡脉冲和射流形成等各个阶段的计算结果与实验值吻合较好。本文利用轴对称SPH方法成功地模拟了柱状装药爆轰和气泡喷流。计算结果在对称轴上仍具有较高的精度，验证了本文所建立的轴对称SPH方法在三维水下爆炸、气泡喷流等物理问题计算中的可行性。同时，本文将轴对称SPH方法和边界元方法成功地结合起来，充分发挥了两者的优势，对其他流体力学问题的求解也具有一定的借鉴意义。
Underwater explosion detonated by column charge can generate exceedingly high-pressure shock wave, bubble pulsing and high-speed jet formed by bubble. Its physical course involves many complicated problems such as transient state, high temperature and high pressure, large distortion and multi-medium flow. For this reason, axisymmetric Smoothed Particle Hydrodynamics (SPHs) numerical model was established combined with Boundary Element Method (BEM) to simulate the whole process of underwater explosion detonated by column charge in this paper. Calculation results of various phases such as shock wave propagation, bubble pulsing and jet formation agree well with the experiment values. In this study, column charge detonation and bubble jet are successfully simulated via axisymmetric SPH method. The calculation results are still of highly precise at the symmetrical axis, verifying the feasibility of the axisymmetric SPH method established in this paper in the computation of three-dimensional underwater explosion, bubble jet and other physical problems. Meanwhile, axisymmetric SPH method and BEM are successfully combined in this paper to fully utilize their advantages, which is favorable in the solution of other hydrodynamic problems.
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影响因子：
2.8
作者：
Liu, MB;Liu, GR;Lam, KY
通讯作者：
Lam, KY
DOI：
10.1201/9781315373140-19
发表时间：
2016-11
期刊：
Simulation of Additive Manufacturing using Meshfree Methods
影响因子：
--
作者：
Donald H. House;John Keyser
通讯作者：
Donald H. House;John Keyser
影响因子：
4.1
作者：
Y. L. Zhang;K. S. Yeo;B. Khoo;C. Wang
通讯作者：
Y. L. Zhang;K. S. Yeo;B. Khoo;C. Wang
DOI：
10.1007/978-3-030-00773-7
发表时间：
2019
期刊：
--
影响因子：
--
作者：
Carlos Alberto Dutra Fraga Filho
通讯作者：
Carlos Alberto Dutra Fraga Filho
影响因子：
0.9
作者：
L. Brookshaw
通讯作者：
L. Brookshaw