Drop formation in rotating non-Newtonian jets with surfactants
Drop formation in rotating non-Newtonian jets with surfactants
复制标题
使用表面活性剂在旋转非牛顿射流中形成液滴
DOI：
10.1093/imamat/hxr076
复制
发表时间：
2012
影响因子：
1.2
通讯作者：
Uddin J
中科院分区：
文献类型：
--
作者：
Uddin J
工业制粒工艺为生产小颗粒球团提供了一种快速、可靠的方法。这些颗粒通常是由旋转液体射流破裂形成的凝固液滴，而旋转液体射流通常是非牛顿的。了解控制这些液滴大小的因素对于提供高质量的单分散颗粒和消除浪费非常重要。在本文中，我们研究了旋转非牛顿液体射流的不稳定性，特别是我们研究了射流沿其界面有表面活性剂初始层的情况。我们使用渐近方法将控制方程简化为一组一维方程，并使用二阶有限差分格式求解这些方程，以研究破碎和液滴形成。寄生卫星液滴的大小可能导致更大的低效率，研究了一些不同的参数值。
The industrial prilling process provides a quick and reliable method for producing small pellets. These pellets are usually solidified droplets formed by the break-up of rotating liquid jets, which are typically non-Newtonian. An understanding of the factors that control the size of these droplets is important in delivering high-quality monodisperse pellets and also eliminating waste. In this paper, we investigate the instability of a rotating non-Newtonian liquid jet and in particular, we examine the case where the jet has an initial layer of surfactant along its interface. We use an asymptotic method to reduce the governing equations into a set of 1D equations and we solve these equations using a second-order finite difference scheme in order to investigate break-up and droplet formation. The size of parasitic satellite droplets, which can lead to greater inefficiencies, are investigated for a number of different parameter values.