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为研究钢液中湍流漩涡对钢中夹杂物行为的影响,采用Matlab软件对不同尺寸夹杂物所受斯托克斯阻力、重力、向心力进行分析,并构建钢液湍流漩涡中夹杂物运动行为模型。计算结果表明:漩涡中尺寸0~23μm的夹杂物以0~1m/s的初始切向速度做向心运动,逐渐聚集至涡心,其跃迁轨迹呈螺旋锥形,跃迁角、跃迁起点和终点与粒径、涡速相关。粒径、涡速越大,跃迁角越大,跃迁终点离涡心越远;而大于此尺寸范围的夹杂物惯性作用较强,离心运动趋势较大,重力将超过斯托克斯阻力成为主要作用力。通过水模拟实验得出漩涡中夹杂物的运动轨迹为螺旋锥形,与理论模型结果一致。
In order to study the influence of turbulent vortex on the behavior of inclusions in steel, Matlab software was used to analyze the resistance, gravity and centripetal force of inclusions of different sizes, and the motion model of inclusions in turbulent vortex of molten steel . The calculated results show that inclusions with a size of 0 ~ 23μm in the vortex do centripetal motion at an initial tangential velocity of 0 ~ 1m / s and gradually converge to the vortex center with a spiral cone, transition angle, transition start point and end point And particle size, vortex velocity related. The larger the particle size, the larger the vortex velocity, the larger the transition angle, the farther the transition point is from the vortex center. However, the inclusions larger than this range have stronger inertia, larger centrifugal motion and more gravity than Stokes’s resistance Force. The result of water simulation experiment shows that the movement of inclusions in the vortex is spiral cone, which is consistent with the theoretical model.