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.
因此，通过提高PMMA粉的平均粒度及粒度分布宽度，降低堆积空隙率，可以在结构上为提高粉液比提供可行性。
The results indicated that the packing of PMMA beads with lognormal distributions was different due to the difference of mean parti…
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