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首页> 外文会议>25th International Conference on Offshore Mechanics and Arctic Engineering 2006(OMAE2006) vol.4 >FRONT TRACKING APPROACH AND APPLICATION TO MULTI-FLUID FLOW
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FRONT TRACKING APPROACH AND APPLICATION TO MULTI-FLUID FLOW

机译：前跟踪方法及其在多流体流中的应用

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摘要

Multiphase flows simulations using a robust interface-tracking method, are presented. The method is based on writing one set of governing equations for the whole computational domain and treating the different phases as single fluid domain with variable material properties. Interfacial terms are accounted for by adding the appropriate sources as δ functions at the boundary separating the phases. The unsteady Navier-Stokes equations are solved by finite volume method on a fixed, structured grid and the interface, or front, is tracked explicitly by a lower dimensional grid. Interfacial source terms are computed on the front and transferred to the fixed grid. Advection of fluid properties such as density and viscosity is done by following the motion of the front. The method has been implemented for interfacial flow problems, depicting the interface and topology change capturing capability. The representation of the moving interface and its dynamic restructuring, as well as the transfer of information between the moving front and the fixed grid, is discussed. Extensions of the method to density stratified flows, and interfacial movements are then presented.
机译：提出了使用鲁棒接口跟踪方法的多相流模拟。该方法基于为整个计算域编写一组控制方程并将不同相视为具有可变材料属性的单个流体域。通过在相分离的边界处添加适当的源作为δ函数来解释界面项。不稳定的Navier-Stokes方程通过有限体积方法在固定的结构化网格上求解，并且界面或前部由较低维的网格明确跟踪。界面源项在前面进行计算，然后传输到固定网格。流体特性（例如密度和粘度）的对流是通过跟随前端的运动来完成的。该方法已针对界面流动问题实施，描述了界面和拓扑更改捕获功能。讨论了移动界面的表示形式及其动态重组，以及在移动前端和固定网格之间的信息传递。然后介绍了该方法对密度分层流和界面运动的扩展。

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