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首页> 外文期刊>Engineering Applications of Computational Fluid Mechanics >Finite element simulation for multiphase fluids with different densities using an energy-law-preserving method
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Finite element simulation for multiphase fluids with different densities using an energy-law-preserving method

机译：用能律保存方法用不同密度的多相流体有限元模拟

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This paper reports the results of a numerical study on the dynamics of isothermal multiphase fluids using an energy-law-preserving method. A phase-field model is taken into account. Different to previous studies, a continuous finite element technique is used to simulate the Navier-Stokes-Cahn-Hilliard coupled model. A modified discrete energy law of the numerical simulation is derived in detail. A penalty formulation is applied for continuous conditions to ensure the stability of the pressure. The coalescence of two kissing bubbles and the rising of a lighter drop are simulated as numerical examples, and the estimated orders of the velocity gradient are computed to examine the accuracy of the numerical solution. The paper shows that in the computing process the energy law is preserved for each time step and that the errors in the discrete energy law equal less than 10~(?8).
机译：本文报告了使用能量律保存方法对等温多相流体动态的数值研究结果。考虑相位场模型。与先前的研究不同，使用连续的有限元技术来模拟Navier-Stokes-Cahn-Hilliard耦合模型。详细推导了数值模拟的修改的离散能量规律。禁用罚款制剂用于连续条件，以确保压力的稳定性。两个接吻气泡的聚结和较轻下降的上升被模拟为数值示例，并且计算速度梯度的估计令以检查数值解决方案的准确性。本文表明，在计算过程中，每次步骤保留能量律，并且离散能量法中的误差等于10〜（？8）。

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