The Study Of Water Modeling And Mathematical Simulation On 40t LF Ladle About Argon Bottom Blowing And Drain Operations

Using water modeling and mathematical simulation method, the fluid dynamics, mixing characters and drain operations of 40t LF ladle have been investigated. The study of water experiment has been built on the base of similarly theory. The geometry and dynamic similarly numbers were considered mainly. For water modeling system, water has been used instead of steel and the model was made of acrylics, which was in the proportion of 1 : 4. For dynamic similarity, the similarly number of F'_r was considered. The objective of water modeling experiment could be listed as follow: On the one hand, some parameters could be provided for mathematical simulation; on the other hand, the results of numerical simulation could also be examined. For the mathematical simulation, a commercial software package was used to study the 40t LF ladle which was partitioned on orthogonal grid. Using the software package, the fluid field and mixing have been studied at different blowing rate and the process of drain operations have been researched also to make sure the critical level when drain. Though the study, rational operational parameters will be found to optimize operations.With the water modeling experiment and mathematical simulation, something valuable have been found. The turbulence model of Realizable κ-ε and Reynolds ASM are the best suitable rather than others for the ladle bottom blowing system. But, considered process, Realizable κ-ε model is the best. When bottom blown, two cycled field have been formed. Comparing with them, one is bigger and the other is smaller, but the stronger flow is the latter. It is also could be conclude that with the increase of blowing rate, the stirring flow will become more and more stronger and there have been a prime blowing rate and a critical blowing rate. Under the prime blowing rate, there will be good stirring state and smaller "dead area", which also achieves faster chemical reaction and eliminates the gradient of composition and temperature. Under the critical blowing rate, the liquid surface doesn't fluctuate fiercely, which makes sure molten steel not be contaminated by slag, and 350s is good...