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基于耦合的二维Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ动量方程和热传导方程建立了单辊法制备非晶合金中的传热和熔体流体动力学模型．利用ＳＩＭＰＬＥ差分算法计算了熔池内的温度场和速度场．获得了不同辊速条件下熔体的平均冷却速度．与红外热像法测得的Ｆｅ７８Ｓｉ９Ｂ１２Ｍｏ非晶合金的冷却速度相比，数值模拟得到的冷却速度在熔池大部分范围内与实验结果接近．在熔池的左右边界，由于界面换热系数难以准确预测，数值计算结果存在偏差
Based on coupled two-dimensional Navier-Stokes momentum equation and heat conduction equation, the heat transfer and melt fluid dynamics model of amorphous alloy prepared by single roller method was established. The SIMPLE difference algorithm was used to calculate the temperature and velocity fields in the weld pool. The average cooling rate of the melt under different roll speeds was obtained. Compared with the cooling rate of Fe78Si9B12Mo amorphous alloy measured by infrared thermography, the numerical simulation results show that the cooling rate is close to the experimental results in most of the molten pool. At the left and right boundaries of the weld pool, the numerical calculation results are biased due to the difficulty in accurately predicting the interface heat transfer coefficient