Numerical simulation of droplet evaporation based on the smoothed particle hydrodynamics method
Numerical simulation of droplet evaporation based on the smoothed particle hydrodynamics method
复制标题
基于平滑粒子流体动力学方法的液滴蒸发数值模拟
作者：
Xinpeng Xiao;Xiaojing Ma;Kari Tusongjiang;Q. Xu;Mengyao Fan
基于光滑粒子流体力学方法，建立了SPH的数值模型
Based on the Smoothed Particle Hydrodynamics method, a numerical model of SPH
in multiphase flow evaporation accompanied with heat and mass transfer has
been established, and phase transition of droplet evaporation is simulated.
In this paper, an SPH mass transfer equation of gas phase in evaporation are
proposed based on Fick's law. In order to solve the problem of large mass
difference of particles at the phase interface during evaporation, the
particle splitting and merging techniques are introduced, and the tensile
instability of particles during the splitting and merging is weakened by
artificial stress. Besides, by adding the surface tension model, the mutual
penetration of particles at the gas-liquid interface is effectively
prevented. On this basis, the evaporation of single droplet and interacting
droplets without gravity is simulated. The results show that the evaporation
time of single droplet in this study conforms to D2 law and is within the
theoretical range. There is a great influence between interacting droplets
in the process of evaporation. Only when dimensionless number C (droplet
spacing/droplet diameter) is larger than 8, the influence between droplets
can be approximately ignored.
DOI：
10.1103/physreve.88.013304
发表时间：
2013-07
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
作者：
H. Safari;M. Rahimian;M. Krafczyk
通讯作者：
H. Safari;M. Rahimian;M. Krafczyk
影响因子：
2.4
作者：
Safari, Hesameddin;Rahimian, Mohammad Hassan;Krafczyk, Manfred
通讯作者：
Krafczyk, Manfred