基于近似因子分解法的铸造充型过程数值模拟研究

目前求解流动过程中速度场、压力场最常用的方法是SOLA法,在求解过程中由于需要在连续性方程、动量方程间反复迭代,所以计算效率不高。采用近似因子分解法进行速度场、压力场求解，由于在求解过程中每一步均可采用托马斯算法求解三对角方程,所以计算简单,可有效提高计算效率。最终建立了基于有限差分法的流动场数值模拟程序，并针对Benchmark件进行了充型过程流动场数值模拟，通过对比模拟结果与实验结果，验证了计算模型的正确性。

Numerical Simulation of Casting Filling Process Based on Approximate Factorization Method

To simulate  the flow patterns of casting filling,a SOLA method was used for calculating the pressure and the velocity fields.Because of  repeated iteration,the computational efficiency was low.Herein,an approximate factorization scheme   was applied in numerical solution of the pressure and the velocity fields.The finite difference program was established to calculate filling process.In order to demonstrate the correctness of  this new program,a benchmark filling experiment was simulated.The simulated results agree very well with the experimental results and this new program can be used to properly predicate the mold filling simulation in casting.