An Improved Volume of Fluid Method for Two-Phase Flow Computations on Collocated Grid System
An Improved Volume of Fluid Method for Two-Phase Flow Computations on Collocated Grid System
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DOI：
10.1115/1.4002981
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发表时间：
2011-04
影响因子：
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通讯作者：
Dongliang Sun;Yongping Yang;Jinliang Xu;W. Tao
中科院分区：
文献类型：
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作者：
Dongliang Sun;Yongping Yang;Jinliang Xu;W. Tao
提出了一种改进的流体体积法-精确密度和粘度流体体积法（ADV-VOF），用于求解两相流问题。该方法具有以下特点：（1）所有操作都在同位网格系统上进行。(2)分段线性界面计算用于捕获界面并执行细胞边缘密度和粘度的精确估计。(3)采用二阶和三阶插值对流格式离散对流项，求解守恒的Navier-Stokes方程。(4)采用分步方法求解守恒Navier―Stokes方程，通过离散压力修正方程，采用BiCGSTAB算法求解代数方程组。上述特性保证了两相流问题的简单、稳定、高效和准确的模拟。通过与传统的对边界密度和粘度进行粗略处理的流体体积法进行比较，验证了ADV-VOF方法的有效性。结果表明，ADV-VOF方法可以成功地模拟两相间具有较大密度比和粘度比的两相问题，在这方面优于传统的流体体积法。
An improved volume of fluid method called the accurate density and viscosity volume of fluid (ADV-VOF) method is proposed to solve two-phase flow problems. The method has the following features: (1) All operations are performed on a collocated grid system. (2) The piecewise linear interface calculation is used to capture interfaces and perform accurate estimations of cell-edged density and viscosity. (3) The conservative Navier― Stokes equations are solved with the convective term discretized by a second and third order interpolation for convection scheme. (4) A fractional-step method is applied to solve the conservative Navier―Stokes equations, and the BiCGSTAB algorithm is used to solve the algebraic equations by discretizing the pressure-correction equation. The above features guarantee a simple, stable, efficient, and accurate simulation of two-phase flow problems. The effectiveness of the ADV-VOF method is verified by comparing it with the conventional volume of fluid method with rough treatment of cell-edged density and viscosity. It is found that the ADV-VOF method could successfully model the two-phase problems with large density ratio and viscosity ratio between two phases and is better than the conventional volume of fluid method in this respect.