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首页> 外文期刊>International Journal of Heat and Fluid Flow >Normal impingement of a droplet onto a wall film: a numerical investigation
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Normal impingement of a droplet onto a wall film: a numerical investigation

机译:液滴在壁膜上的正常撞击:数值研究

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The paper presents results of a numerical investigation of the impingement process of a droplet normally onto a wall film. The numerical method is based on the finite volume solution of the Navier-Stokes equations, in their axisymmetric formulation, expressing the flow field of the two phases, liquid and gas, coupled by the volume of fluid method (VOF). The latter allows the tracking of the fluid-gas interfaces. The results are compared with available experimental data for integral quantities such as the lamella development in time, whilst the method gives details of the flow fields not hitherto available and which shed light on the droplet interaction with the gas and the mixing mechanisms of the droplet and the wall film during the initial stages of impingement. The latter information is obtained via a 2-VOF model for the prediction of the distribution of mass in the region of lamella during the splash.
机译:本文提出了对液滴正常撞击到壁膜上的过程进行数值研究的结果。数值方法是基于Navier-Stokes方程的轴对称公式的有限体积解,通过液体体积法(VOF)来表示液体和气体两相的流场。后者允许跟踪流体-气体界面。将结果与整体量的可用实验数据(例如及时形成薄片)进行比较,同时该方法提供了迄今为止尚不可用的流场的详细信息,这些流场揭示了液滴与气体的相互作用以及液滴与溶液的混合机理。撞击初期的壁膜。后者的信息是通过2-VOF模型获得的,用于预测飞溅过程中薄片区域中的质量分布。

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