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《Acta Armamentarii》 2015-S1
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Application of Lagrangian Non-reflecting Boundary Conditions in Underwater Explosion

GONG Xiang-fei;HONG Tao;WANG Zheng;ZHANG Shu-dao;YANG Ji-ming;Institute of Applied Physics and Computational Mathematics;University of Science and Technology of China;  
In the practical application of computational fluid dynamics,non-reflecting boundary condition is an important research subject. A new kind of Lagrangian non-reflecting boundary condition is constructed in the Lagrangian framework based on the time-line interpolation characteristic method,and is applied in SPH method. Compared with the characteristic method in Euler framework,the proposed method is more simple and easy to implement for the same formulations in inflow and outflow zones without distinguishing the subsonic flow from supersonic flow. The numerical results show that the proposed method is able to meet the need of the numerical simulation in underwater explosion.
【Fund】: 中国工程物理研究院科学技术发展基金项目(2012A0201011、2013A0101004、2013A0201009)
【CateGory Index】: TQ560.1
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