冷却水流量对大直径棒材冷却效果的影响规律

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,研究了冷却水流量对冷却效果的影响规律,并分析了决定冷却水流量的两个因素———冷却器入口截面积及冷却水流流速对冷却效果的影响程度.模拟结果表明:当流量相对较小时,流量的改变对冷却效果的影响较大;当流量增大到一定值后,随着流量的继续增大,对冷却效果的影响逐渐减小;冷却水流流速对冷却效果的影响程度大于冷却器入口截面积.

Influential rule of cooling water flow on the cooling effect of big bars

A numerical calculation method of finite element coupling field was used to simulate the cooling process of big bars. The influential rule of cooling water flow on the cooling effect was obtained by analyzing the numerical result. Moreover, the influence degrees of two factors, the sectional area of the cooler's inlet port and the velocity of cooling water, were compared. The results show that when the cooling water flow is relative small, its change has significantly influence on cooling effect; but when t...