文中分析了数值方法的稳定性与收敛性，并考查了横向耗散项对计算结果的影响。

The stability and convergence of the numerical scheme is analyzed, and the effect of the crossflow dissipation integral upon the calculation are examined.

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计算过程表明，本文方法及措施具有很好的收敛性与稳定性。且收敛性与自由面初始位置的选择无关。

The computational procedure shows that the method and the measures of the paper have good convergence property and stability, which is independent of selecting of the initial free surface.

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证明了差分格式的收敛性与稳定性。

And the convergence and stability are proved.

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