工程科学学报2016，Vol.38Issue(5)：644-649,6.DOI:10.13374/j.issn2095-9389.2016.05.008
应用格子 Boltzmann方法直接数值模拟研究钢中夹杂物上浮及碰撞行为
Direct numerical simulation of inclusion floating and collision behavior in molten steel using the lattice Boltzmann method
摘要
Abstract
The floating and collision behavior of inclusions in the floating process was numerically simulated by using the Lattice Boltzmann method. It is found that the floating velocity simulation results of different size inclusion particles are almost the same as the theoretical value, which demonstrates that the motion behavior of solid inclusion particles can be investigated concisely and effectively by using the numerical algorithm adopted in this paper. When an inclusion particle with a diameter of 80μm locates below an inclusion particle with a diameter of 40μm and floats up at the same time, the inclusion particle with a diameter of 80μm can catch up with the inclusion particle with a diameter of 80μm, collide with each other and grow up into a big inclusion cluster. When the inclusion parti-cles with diameters of 80μm and 40μm floats up separately, the floating velocity of the inclusion cluster is bigger than them. For the inclusion particle with a diameter of 40μm, the floating velocity after collision with the bigger size inclusion particle increases by 300% compared with that of floating separately. In the steelmaking process, it is necessary to take measures to enhance collision and coagulation in the floating process, which will improve the floating velocity of inclusions especially for small size inclusions and have a great importance on the cleanliness of steel.关键词
夹杂物去除/上浮/碰撞/直接数值模拟Key words
inclusions removal/floating/collision/direct numerical simulation分类
矿业与冶金引用本文复制引用
王耀,于小南,郭洛方,李宏,朱少楠..应用格子 Boltzmann方法直接数值模拟研究钢中夹杂物上浮及碰撞行为[J].工程科学学报,2016,38(5):644-649,6.基金项目
国家自然科学基金资助项目(51074020) （51074020）
