Application of the MVPPM-Based Fluid-Solid Coupling Method to the Explosion Vessel Simulations
-
摘要: 爆炸容器内部流场演化和壳体结构动力响应可为容器外形、结构和材料选取等设计提供直接的数据支持,但由于爆炸容器具有大尺度、多组分、高密度比和复杂结构等特点,其内部流场数值预测一直以来都比较困难。基于Level Set方法,将具有大变形特点的内部气体流场和相对变形较小的容器结构分离开来,对气体流场和容器结构分别采用Euler型的MVPPM方法和Lagrange方法进行处理,引入虚拟流体技术处理交界面上的物理信息,成功将这种流固耦合数值方法应用于椭球封头和类球形爆炸容器的数值计算。Abstract: The flow field evolvements inside the explosion vessel volume and the dynamic response of the vessel shell are basic data in designing of the vessel shape, structure and material selection. But for some reason of the vessel large scale, multi-component, high-density ratio and complex structure, and thus the numerical simulation of explosion flow field inside the vessel is very difficult. In this study, we utilized the level set method differentiate the large deformation of the flow field from the small deformation of the vessel, and the Euler MVPPM method and Lagrange were respectively used in numerical calculations. The ghost fluid technology was employed to deal with the fluid and solid at the interface of the physical information. We successfully applied the present method to the ellipsoidal head and the similar spherical explosion vessel simulations.
-
Jiang Y, Sun C W, Li P, et al. Numerical simulation of the motion of flyer driven by slab explosive initiated at centered point [J]. Chinese Journal of High Pressure Physics, 2009, 23(4): 261-265. (in Chinese) 姜洋, 孙承纬, 李平, 等. 点起爆炸药驱动平板飞片运动的数值模拟研究 [J]. 高压物理学报, 2009, 23(4): 261-265. Arienti M, Hung P. A level set approach to Eulerian-Lagrangian coupling [J]. J Comput Phys, 2003, 185: 213-251. Sun C W, Wei Y Z, Zhou Z K. Applied Detonation Physics [M]. Beijing: National Defence Industry Press, 2000. (in Chinese) 孙承纬, 卫玉章, 周之奎. 应用爆轰物理 [M]. 北京: 国防工业出版社, 2000. Yun S R, Tu H J. Explosion Calculation Method [M]. Beijing: Beijing Institute of Technology Press, 1995. (in Chinese) 恽寿榕, 涂侯杰. 爆炸力学计算方法 [M]. 北京: 北京理工大学出版社, 1995. Bai J S, Li P, Chen S H, et al. Numerical simulation of the instability of the jelly surfaces under the imploding drives [J]. Chinese Journal of High Pressure Physics, 2004, 18(4): 295-301. (in Chinese) 柏劲松, 李平, 陈森华, 等. 内爆加载下果冻内外界面不稳定性数值模拟 [J]. 高压物理学报, 2004, 18(4): 295-301. Bai J S, Li P, Zou L Y, et al. Two-dimensional simulation of the mixing induced by interface instabilities [J]. Chinese Journal of Theoretical and Applied Mechanics, 2008, 40(4): 464-471. (in Chinese) 柏劲松, 李平, 邹立勇, 等. 界面不稳定性引起混合过程的二维数值计算 [J]. 力学学报, 2008, 40(4): 464-471. Liu K, Bai J S, Li P. Ghost-fluid Eulerian-Lagrangian method and its application [J]. Chinese Journal of Applied Mechanics, 2010, 27(3): 456-460. (in Chinese) 刘坤, 柏劲松, 李平. Ghost-fluid Eulerian-Lagrangian方法及其应用 [J]. 应用力学学报, 2010, 27(3): 456-460.
点击查看大图
计量
- 文章访问数: 6896
- HTML全文浏览量: 242
- PDF下载量: 364