Break-up and droplet formation in shear thinning compound liquid jets
Break-up and droplet formation in shear thinning compound liquid jets
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DOI：
10.1093/imamat/hxr075
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发表时间：
2012-02
影响因子：
1.2
通讯作者：
Muhammad Mohsin;J. Uddin;S. Decent;M. Simmons
中科院分区：
文献类型：
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作者：
Muhammad Mohsin;J. Uddin;S. Decent;M. Simmons
复合液体射流破碎成液滴与工程和科学中的许多实际情况有关。本文研究了服从Carreau模型的非牛顿剪切稀化复合液体射流的破碎动力学。长波长渐近展开被用来减少到一组一维偏微分方程的控制方程的问题，它描述了领先的一阶轴向速度的射流以及内外界面的半径的演变。我们使用数值方法求解这些方程，基于有限差分，研究改变关键参数对破碎动力学和液滴尺寸的影响。
The break-up of a compound liquid jet into droplets has relevance to many practical situations in engineering and science. In this paper, we investigate the dynamics associated with the break-up of a non-Newtonian shear thinning compound liquid jet obeying the Carreau model. A long wavelength asymptotic expansion is used to reduce the governing equations of the problem into a set of 1D partial differential equations, which describe the evolution of the leading order axial velocity of the jet as well as the radii of both the inner and the outer interfaces. We solve these equations using a numerical method, based on finite differences, to investigate the effect of changing key parameters on break-up dynamics and droplet sizes.