We adopted different time steps for the calculation of the flow and temperature field, which improve the efficiency greatly.

通过对流场及温度场分别采用不同的计算域和时间步长，大大提高了计算效率。

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A zone partitioning technique for the calculational area was developed to apply different time steps in different areas during the solidification simulation.

对不同的计算区域采用不同的时间步长进行计算，建立了分区域计算方法。建立了基于分数步长法的隐式差分方法。

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According to the theory of grey system, the different time steps model of GM (1 1) in the pile foundation engineering is established, and a testing method of this model is provided.

根据灰色系统理论，首次建立了时间非等步长的桩基工程GM(1 1)模型，提出了时间非等步长的桩基工程GM(1 1)模型的检验方法。

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