Abstract: The math modeling of distribution of flux flow field and analysis on pressure of meniscus in mold have been carried out by commercial software Fluent. The flow rate of flux was maximum at time t =0 during a oscillation circle,at that time the minus pressure on solidified shell was produced by flux, therefore it should be to decrease the minus pressure in time as far as possible,in order to decrease frictional force for flux easy flowing in.The modeling results conform to the real condition of billet concasting at Nanjing Steel.

摘要： 用商业软件Fuent 对弯月面处保护渣的流场分布和弯月面受力情况进行了数学模拟和分析。 对于一个振动周期，在时间t=0 时，保护渣的流入量最大，此时保护渣对凝固坯壳产生负压，为使保护渣容易流人，应尽量减小此时的负压，减小保护渣与结晶器之间的摩擦力。模拟结果与南钢方坯连铸实际情况一致。