东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (3): 384-387+410.DOI: -

• 论著 • 上一篇    下一篇

湍流模型对结晶器内流场数值模拟结果的影响

冯明杰;陈芝会;王恩刚;赫冀成;   

  1. 东北大学材料电磁过程研究教育部重点实验室;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家联合资助基金资助项目(50834009);;

Effect of turbulence models on numerically simulated fluid flow in casting molds

Feng, Ming-Jie (1); Chen, Zhi-Hui (1); Wang, En-Gang (1); He, Ji-Cheng (1)   

  1. (1) Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Feng, M.-J.
  • About author:-
  • Supported by:
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摘要： 以Fluent 6.3为计算平台,采用数值模拟的方法研究了5种常用湍流模型对电磁制动下连铸板坯结晶器内钢液流动计算结果的影响,并与水模型和实测结果进行了对比.结果表明:标准k-ε和低雷诺数k-ε模型的计算结果与实际流场较为接近,而重整化群k-ε和剪切应力输运k-ω模型与实际流场相差较远.不同湍流模型计算得到的弯月面形状大致相同,但标准k-ε模型与实测结果更为接近.Spalart-Allmaras模型所需内存最小,花费时间最短;剪切应力输运k-ω模型花费时间最长,其他模型所需内存大致相当.

关键词: 湍流模型, 结晶器, 流场, 数值模拟, 弯月面

Abstract: The influence of five turbulence models on numerically simulated fluid flow in a slab continuous casting mold was investigated using EMBR (electromagnetic brake) and Fluent 6.3 software. Results were compared with data obtained from a hydraulics model experiment or from actual factory measurements. Data obtained by a standard k-Ε model or by a low-Re k-Ε model conformed to real conditions, whereas data generated by an RNG (renormalization group) k-Ε model or by an SST (shear-stress transport) k-Ε model lacked sufficient accuracy. Meniscus shapes obtained by the turbulence models were similar, but the standard k-Ε model generated values even closer to actual conditions. Required computer memory and time expense of numerical simulation by the Spalart-Allmaras model are less than that of other models and the computing efficiency of the SST k-Ε model is the lowest.

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