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利用有限元耦合场数值模拟计算方法,对大直径棒材穿水冷却过程进行了三维非稳态数值模拟,分析了冷却器管道直径在棒材不同位置及对整体冷却效果的影响规律。模拟结果表明:在棒材整体方向上,管道直径D=220mm及D=240mm时冷却效果最好,D=350mm及D=400mm时冷却效果最差;在给定的工况条件下,棒材表层的温度在冷却过程中出现了波动,且冷却器管道直径越大波动现象越明显;棒材长度方向上温度分布不均匀。
The three-dimensional unsteady numerical simulation of the water-cooling process of the large-diameter bar was carried out by using the numerical simulation of finite element coupled field. The influence of cooler pipe diameter on different positions of the bar and the effect on the overall cooling effect was analyzed. The simulation results show that the cooling effect is the best when the pipe diameter is D = 220mm and D = 240mm, and the cooling effect is the worst when D = 350mm and D = 400mm. Under given operating conditions, The surface temperature fluctuates during the cooling process, and the larger the diameter of the cooler pipe, the more obvious the fluctuation phenomenon is. The temperature distribution in the length direction of the bar is not uniform.