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| Simulation research on monomer agglomeration of nonmetallic inclusions in steel with a diffusion limited aggregation model | |
| 作者姓名： | Hong Li Linxin Ning Juan Wen Jiongming Zhang Yasushi Sasaki Mitsutaka Hino |
| 作者单位： | [1]Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China [2]ShouGang Research Institute of Technology, Beijing 100041, China [3]Department of Metallurgy, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan |
| 摘 要： | The monomer agglomeration of nonmetallic inclusions was simulated with a diffusion limited aggregation （DLA） model of the fractal theory. The simulation study with a random two-dimensional diffusion was carried out. The results indicate that the DLA model can be used for the simulation of agglomeration behavior of the cluster-type inclusions. The morphology of clusters was observed with SEM and compared with the simulated agglomerates. The modelling procedure of the DLA model is applicable for the agglomeration process. The uncertainty of agglomeration process and the persuasive average agglomerative ratio was analyzed. The factors about the agglomerative ratio with the collision path distance and the size of particles or seed were discussed. The adherence of the nonmetallic inclusions on the dam, the weir and the walls of a tundish, and the absorption of inclusions by stopper or nozzle were also discussed. |
| 关 键 词： | 分形理论 数值模拟 DLA模型 单体烧结 非金属夹杂物 |
| 收稿时间： | 2005-07-08 |
Simulation research on monomer agglomeration of nonmetallic inclusions in steel with a diffusion limited aggregation model |
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| Hong Li Linxin Ning Juan Wen Jiongming Zhang Yasushi Sasaki Mitsutaka Hino.Simulation research on monomer agglomeration of nonmetallic inclusions in steel with a diffusion limited aggregation model[J].Journal of University of Science and Technology Beijing,2006,13(2):117-120. | |
| Authors: | Hong Li Linxin Ning Juan Wen Jiongming Zhang Yasushi Sasaki Mitsutaka Hino |
| Affiliation: | 1. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China 2. ShouGang Research Institute of Technology, Beijing 100041, China 3. Department of Metallurgy, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan |
| Abstract: | The monomer agglomeration of nonmetallic inclusions was simulated with a diffusion limited aggregation (DLA) model of the fractal theory.The simulation study with a random two-dimensional diffusion was carried out.The results indicate that the DLA model can be used for the simulation of agglomeration behavior of the cluster-type inclusions.The morphology of clusters was observed with SEM and compared with the simulated agglomerates.The modelling procedure of the DLA model is applicable for the agglomeration process.The uncertainty of agglomeration process and the persuasive average agglomerative ratio was analyzed.The factors about the agglomerative ratio with the collision path distance and the size of particles or seed were discussed.The adherence of the nonmetallic inclusions on the dam, the weir and the walls of a tundish, and the absorption of inclusions by stopper or nozzle were also discussed. |
| Keywords: | fractal theory diffusion limited aggregation (DLA) model monomer agglomeration agglomerative ratio nonmetallic inclusions |
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