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首页> 外文会议>FED-vol.261; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20051105-11; Orlando,FL(US) >A LEVEL SET METHOD FOR SIMULATION OF COALESCENCE OF DROPLETS
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A LEVEL SET METHOD FOR SIMULATION OF COALESCENCE OF DROPLETS

机译：模拟果粒共性的水平集方法

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摘要

In the present paper, we discuss a numerical method based on the level set algorithm to simulate two-phase fluid flow systems. Surface tension force at the fluid interface is implemented through the CSF model of Brackbill et al. The incompressible Navier-Stokes equations were solved on a staggered grid using an explicit projection method. A fifth-order WENO scheme was used for advancing the level set function. We improved the implementation of WENO scheme by staggering the level set function. The Navier-Stokes part of the code was validated by computing the standard lid-driven cavity flow and the free surface part of the code was validated by advecting the interface in a prescribed velocity field. The Young-Laplace law for a static drop has been verified to validate the implementation of surface tension force. We simulated the coalescence of two drops under zero-gravity condition and evaluated the mass conservation property of the level set method.
机译：在本文中，我们讨论了一种基于水平集算法的数值方法来模拟两相流体流动系统。流体界面处的表面张力是通过Brackbill等人的CSF模型实现的。使用显式投影方法在交错网格上求解了不可压缩的Navier-Stokes方程。使用五阶WENO方案来推进级别设置功能。我们通过交错级别设置功能改进了WENO方案的实现。代码的Navier-Stokes部分通过计算标准盖驱动腔流动进行验证，代码的自由表面部分通过在规定的速度场中平移界面进行验证。静态滴的杨-拉普拉斯定律已得到验证，以验证表面张力的实现。我们模拟了两个液滴在零重力条件下的合并，并评估了水平集方法的质量守恒性质。

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