粒子法完全基于拉格朗日框架求解流体的流动,可以自动追踪界面的运动,因此在多相流模拟方面具有很大的潜力.本文将移动粒子半隐式算法(MPS)扩展至多相流动,通过在两相过渡区域内定义平均的密度和黏度将MPS方法中的粒子相互作用模型扩展成为多相粒子相互作用模型.采用连续表面张力模型(CSF)将表面张力转化为体积力,采用光滑颜色函数等高线的曲率来表征界面的曲率,而光滑颜色函数的导数则通过最小二乘法拟合得到.最后,采用气泡在静止液体内的上升运动验证了本文的算法.
参考文献
| [1] | N. Grenier;D. Le Touze;A. Colagrossi;M. Antuono;G. Colicchio .Viscous bubbly flows simulation with an interface SPH model[J].Ocean engineering,2013(Sep.1):88-102. |
| [2] | Koshizuka S.;Oka Y. .MOVING-PARTICLE SEMI-IMPLICIT METHOD FOR FRAGMENTATION OF INCOMPRESSIBLE FLUID[J].Nuclear science and engineering: the journal of the American Nuclear Society,1996(3):421-434. |
| [3] | Nima Tofighi;Mehmet Yildiz .Numerical simulation of single droplet dynamics in three-phase flows using ISPH[J].Computers & Mathematics with Applications: An International Journal,2013(4):525-536. |
| [4] | Khayyer, A.;Gotoh, H..Enhancement of performance and stability of MPS mesh-free particle method for multiphase flows characterized by high density ratios[J].Journal of Computational Physics,2013:211-233. |
| [5] | Ahmad Shakibaeinia;Yee-Chung Jin .MPS mesh-free particle method for multiphase flows[J].Computer Methods in Applied Mechanics and Engineering,2012(Jul.1):13-26. |
| [6] | Hua, J;Lou, J .Numerical simulation of bubble rising in viscous liquid[J].Journal of Computational Physics,2007(2):769-795. |
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