模拟结果表明：气泡乳相模型在气泡鼻区域计算的局部空隙率显著低于面积加权平均法的计算结果，因而在该区域能较大幅度地修正曳力。
The simulation results show that local voidage calculated by bubble and emulsion model is observably lower in the bubble nose region, compared with that calculated by area weighted averaging.
进一步采取分区域选点法，用加权平均法生成了网格数字地形，实现了地形的可视化。
Grid digital terrain is produced with getting reference point by subarea and weighted averaging method, and is visualized.
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