Analysis of a New SEN Design with an Inner Flow Divider

Metals

Jose Raul Miranda-Tello¹  Jesus Gonzalez-Trejo²  Ruslan Gabbasov²  Francisco Cervantes-de-la-Torre²  Cesar Augusto Real-Ramirez²  Florencio Sanchez-Silva³  Ignacio Carvajal-Mariscal³ 

[1] Departamento de Electronica, Universidad Autonoma Metropolitana, Mexico City 02200, Mexico;Departamento de Sistemas, Universidad Autonoma Metropolitana, Mexico City 02200, Mexico;Instituto Politecnico Nacional, ESIME UPALM, Mexico City 07738, Mexico;

关键词: continuous casting;    bifurcated SEN;    CFD;    SPH;   

DOI  :  10.3390/met11091437

来源: DOAJ

【 摘 要 】

To minimize the product imperfections due to slag entrapment and surface defects, the fluid flow pattern inside the mold must be symmetric, commonly named double-roll flow. Thus, the liquid steel must enter into the mold evenly distributed. The submerged entry nozzle (SEN) is crucial in product quality in vertical steel slab continuous casting machines because it distributes the molten steel from the tundish into the mold. This work evaluates the performance of a novel bifurcated nozzle design named “SEN with flow divider”. The symmetry at the outlet ports is obtained by imposing symmetry inside the SEN. The flow divider is a solid barrier attached at the SEN bottom inner wall, the height of which slightly surpasses the upper edges of the outlet ports. The performance analysis is done first using numerical simulations, where the Computational Fluid Dynamics (CFD) technique and the Smoothed Particle Hydrodynamics (SPH) approach are used. Then, experimental tests on a scaled model are also used to evaluate the SEN performance. Numerical and physical simulations showed that the flow divider considerably reduces the SEN outlet jets’ broadness and misalignment, producing compact, aligned, and symmetric jets. Therefore, the SEN design analyzed in this work is a promising alternative to improve process profitability.

【 授权许可】

Unknown