Large Eddy Simulation And Controlling Of Vortexing Flow Of Molten Steel In Continuous Casting Mold
连铸结晶器内钢液涡流现象的大涡模拟及控制

Large eddy simulation of vortexing flow of molten steel in the continuous casting mold was conducted. The influence of the SEN (submerged entry nozzle) port angle and the SEN position to the turbulent vortex was analyzed. The mechanism of the turbulent vortex and the biased vortex was analyzed. A new vortex brake was designed to eliminate the vortexing flow, and the fluid flow with and without the vortex brake was simulated. The simulation results show that the turbulent vortex is caused by the turbulent energy; Increase of the SEN port angle and the depth of the SEN below the surface increases the residence time of the turbulent vortex in the free surface. The biased vortex is caused by the off-center of SEN and the turbulent energy. The new vortex brake can eliminate the turbulent vortex and decrease the strength of the "biased vortex".