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摘要
How to generate a swirl and how to drive the particle movement by the swirl were analyzed. Then, a mechanics model of particles in the swirl was established. By taking the micro-level particles (microns to hundred microns) as examples, the characteristics of the rotary flow field generated by two ejecting micro tubes which were parallel placed and the force condition and movement characteristics of the particles in the rotary flow field were analyzed. The influences of different particle sizes, shapes and changed positions on the rotation performance of the particles were discussed, and an experiment was performed to verify the feasibility of swirl method. The analysis and experiments show that the swirl can be generated by two ejecting micro tubes which were parallel placed. And the swirl can drive the micro particles to rotate in the flow field stablely. The movement characteristics of the particles in the flow field are dependent on the flow parameters and particle shapes, particle sizes and the eccentricity. When the eccentric of initial position and the revolution of the particles are reduced, it will be conducive to capturing and adjusting the attitudes of particles. Even though the particle parameters are changed, the method still can drive the particle rotated in stability by reasonable matching these parameters.
- 出版日期2015-7-1
- 单位华南理工大学
