In this work, we use direct numerical simulation through a volume of fluid solver with adaptivemesh refinement to analyze the atomization of a pulsating round liquid jet with a narrow length-scale range configuration. We propose three grid sizes based on characteristic scales we estimate from the deformation and fragmentation processes of this problem. We compute drop statistics and general spray features for each case. We found that mesh resolution affects the atomization rate and the probability density function of droplet size and position, not only for the underresolved drops but for all liquid structures. The two simulations with higher grid refinement presented volume-weighted distribution with minor differences. Therefore, we propose assessing the accuracy of atomization simulations based on the volume fraction of underresolved structures.

中文翻译：

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网格分辨率对原始原子模拟的影响

在这项工作中，我们使用通过一定体积的流体求解器进行直接数值模拟，并进行自适应网格细化，以分析具有窄长标度范围配置的脉动圆形液体射流的雾化。我们根据特征尺度提出了三种网格大小，这些尺度是根据该问题的变形和破碎过程估计的。我们为每种情况计算液滴统计数据和常规喷雾特征。我们发现，网格分辨率影响雾化速率以及液滴大小和位置的概率密度函数，不仅对于未完全溶解的液滴，而且对于所有液体结构都如此。具有较高网格细化度的两个模拟呈现出体积加权分布，差异很小。因此，我们建议根据欠解析结构的体积分数评估雾化模拟的准确性。