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| Simulation of powder particles moving procedure in plasma spray process via lattice Boltzmann method |
| Revised:January 06, 2004 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20061015 |
| KeyWord:plasma spray,lattice Boltzmann method,particle moving,numerical simulation |
| ZHANG Hai-ou PENG Yong WANG Gui-lan HU Sheng-de |
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| Abstract: |
| The focus point of this paper is building the model of powder particles' transportation in plasma spray process for rapid metal tooling.First,on the basis of the hexagonal 7-bit grid LB model,the temperature field and velocity field were solved by LBGK equation and two opportune equilibrium distribution functions;then the acceleration equation was deduced from the moving equation of a single particle.A random model was built,and a suit of rules were used to estimate the location of a particle.With this arithmetic,the numerical simulation program is developed.Finally,the model and the software were validated by comparing with other literatures.The simulation result of the moving procedure of the powder particles in the jet by the method shows the whole process via animation,which indicates that particles closer to the center of the spout will be accelerated more sufficiently and reducing the diameter of the powder particle will increase the velocity of the particle but reduce the availability ratio of the powder.These results can be consulted when optimizing the plasma spray process. |
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