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Dr. Ming -Yu Zhang, Associate Professor
Institute of Applied Physics and Computational Mathematics
Email: zhang_mingyu@iapcm.ac.cn |
Abstract: A parallel smoothed particle hydrodynamics(SPH) code is developed to simulate surface-tension-driven interfacial flow. An SPH method for free-surface flow with surface tension is realized in the developed code. Weakly compressible SPH(WCSPH) method is used to solve incompressible Navier-Stokes equation. An improved algorithm based on interface reconstruction is applied to the simulation of surface tension. The developed surface tension model is more accurate and has better property of symmetry. Virtual particle is used on the solid boundary. Symmetric boundary condition is applied in symmetric plane or symmetric axis.
The drop-film interactions in 2D and 3D are simulated numerically by the developed parallel SPH code. The drop-film interactions with different impact velocities and with different liquid thickness are investigated numerically. The lamella radius is compared with the theory. The numerical results agree with the theory. It shows that the developed parallel SPH code is a useful tool in the investigation of drop-film interaction. The developed parallel SPH code will be applied to the investigation of free surface flow in the future.
报告人简介: 章明宇, 副研究员。1995年至2003年就读于中国科学技术大学热科学与能源工程系，获得学士和硕士学位。2003年至2007年就读于美国纽约州立大学石溪分校机械工程系，获得博士学位。2007年至今，在北京应用物理与计算数学研究所工作。感兴趣的研究领域是光滑粒子动力学方法在热喷涂及界面流动问题中的应用研究。近几年在Computers and fluids，Journal of Computational Physics，International Journal of Heat and Mass Transfer，Numerical Heat Transfer(Part A: Applications)，Plasma Chemistry and Plasma Processing等国际期刊发表文章。
Date&Time: December 26, 2012 (Wednesday), 11:00–12:00 a.m.
Location: 606 Conference Room
