Modern spray-coating processes are based on high-volume, low-pressure, airless atomization or high-speed rotary bell atomization, often assisted by electrostatic charging to increase the transfer efficiency. The process from the liquid film flow beneath the bell, through ligament formation and consecutive disintegration to droplet deposition, has been constantly explored during the evolution of automotive spray coating. This work proposes a set of dimensionless groups that fully describe the process from film flow to ligament disintegration, including shear and elongational flow effects during atomization of particle laden, shear thinning, viscoelastic fluids.

中文翻译：

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高速旋转钟形雾化过程中液滴尺寸和韧带长度的尺寸分析

现代喷涂工艺是基于大容量，低压，无气雾化或高速旋转钟形雾化，通常借助静电充电来提高传输效率。在汽车喷涂的发展过程中，一直在探索从钟罩下面的液膜流动到韧带形成，连续崩解到液滴沉积的过程。这项工作提出了一组无量纲的基团，这些基团充分描述了从薄膜流动到韧带崩解的过程，包括载有粒子的雾化，剪切稀化，粘弹性流体的剪切和伸长流动效应。