| Mathematical Model of Fluid Flow and Solidification in Mold Region of Continuous Slab Casting |
| |
| 作者姓名： | 谭利坚 沈厚发 柳百成 |
| |
| 作者单位： | DepartmentofMechanicalEngineering,TsinghuaUniversity,Beijing100084,China |
| |
| 基金项目： | Supported by the National Natural Science Foundationof China-Bao Steel Conjunct Foundation ( No.5 0 1 74 0 31 ) |
| |
| 摘 要： | To simulate the phenomena in the mold region of continuous casting by coupling fluid flow and solidification, a three-dimensional mathematical model has been developed based on the K-ε turbulence equations and the SIMPLER algorithm. A pseudo source term was introduced into the energy equation to account for the latent heat and kinetic energy. The fluid flow in the mushy zone was calculated by defining the fluid viscosity as a function of the solid fraction in the mushy zone. Fine meshes in the solid region improve convergence and reduce iteration time. Comparison of the fluid flow and temperature distribution with and without solidification shows that although the solid shell in the mold is thin, it still greatly affects the flow pattern. The numerical results obtained provide details of the fluid flow and solidification phenomena which can be used to optimize the nozzle structure and other process parameters in continuous casting.
|
| 关 键 词： | 数学模型 流体流动 流体凝固 连续浇铸 糊状带 湍流模型 炼钢 |
Mathematical Model of Fluid Flow and Solidification in Mold Region of Continuous Slab Casting |
| |
| TAN Lijian,SHEN Houfa ,LIU Baicheng.Mathematical Model of Fluid Flow and Solidification in Mold Region of Continuous Slab Casting[J].Tsinghua Science and Technology,2003,8(1):83-89. |
| |
| Authors: | TAN Lijian SHEN Houfa LIU Baicheng |
| |
| Institution: | TAN Lijian,SHEN Houfa **,LIU Baicheng Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China |
| |
| Abstract: | To simulate the phenomena in the mold region of continuous casting by coupling fluid flow and solidification, a three-dimensional mathematical model has been developedbased on the K-ε turbulence equations and the SIMPLER algorithm. A pseudo source term was introduced into the energy equation to account for the latent heat and kinetic energy. The fluid flow in the mushy zone was calculated by defining the fluid viscosity as a function of the solid fraction in the mushy zone. Fine meshes in the solid region improve convergence and reduce iteration time. Comparison of the fluid flow and temperature distribution with and without solidification shows that although the solid shell in the mold is thin, it still greatly affects the flow pattern. The numerical results obtained provide details of the fluid flow and solidification phenomena which can be used to optimize the nozzle structure and other process parameters in continuous casting. |
| |
| Keywords: | fluid flow solidification mushy zone turbulence model numerical simulation continuous casting |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
