论文标题
使用网格和界面精制的Cahn-Hilliard Navier-Stokes中的初级喷气雾化中的分解动力学
Breakup dynamics in primary jet atomization using mesh- and interface- refined Cahn-Hilliard Navier-Stokes
论文作者
论文摘要
我们提出了一种使用Cahn-Hilliard Navier-Stokes方程进行两相流中复杂分解动力学的接口分辨模拟的技术。该方法动态降低了相关区域的界面厚度参数，并同时增加了局部网格分辨率，从而阻止了数值伪像。我们对脉冲喷射雾化进行了详细的数值模拟，该模拟显示了一系列复杂的分裂机制，涉及板破裂和细丝形成。为了了解细化对分裂的影响，我们分析了液滴尺寸分布。提出的方法为各种多相流现象打开了解决的模拟。
We present a technique to perform interface-resolved simulations of complex breakup dynamics in two-phase flows using the Cahn-Hilliard Navier-Stokes equations. The method dynamically decreases the interface thickness parameter in relevant regions and simultaneously increases local mesh resolution, preventing numerical artifacts. We perform a detailed numerical simulation of pulsed jet atomization that shows a complex cascade of break-up mechanisms involving sheet rupture and filament formation. To understand the effect of refinement on the breakup, we analyze the droplet size distribution. The proposed approach opens up resolved simulations for various multiphase flow phenomena.
