振动对结晶器流场影响的物理模拟基础研究

In this papper, the similarity conditions of the influence of mold oscillation on fluid flow are studied based on the principle of similitude, using the method of dimension analysis. The sinusoidal vibration is taken as an example to work out two similarity parameters, which characterize the influence of oscillation on the fluid flow in mold, and the condition to equal the two parameters. The study shows that the full scale model should be built in water modeling experiment to guarantee the similitude of both fluid dynamics and oscillation conditions, which also makes the modeling more convenient. Mold oscillation has little impact on the fluid flow by friction, so the effect of oscillation appears in the influence of the slag rim on the flow field around the meniscus. In addition, the geometric similarity of the slag rim should be considered in the physical model and the mold oscillation can be simplified to the oscillation of the slag rim directly.