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首页> 外文期刊>Journal of Computational Physics >Augmented Lagrangian and penalty methods for the simulation of two-phase flows interacting with moving solids. Application to hydroplaning flows interacting with real tire tread patterns
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Augmented Lagrangian and penalty methods for the simulation of two-phase flows interacting with moving solids. Application to hydroplaning flows interacting with real tire tread patterns

机译：用于模拟两相流与运动固体相​​互作用的增强拉格朗日法和罚分法。在与实际轮胎胎面花纹相互作用的滑水流中的应用

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摘要

The numerical simulation of the interaction between a free surface flow and a moving obstacle is considered for the analysis of hydroplaning flows. A new augmented Lagrangian method, coupled to fictitious domains and penalty methods, is proposed for the simulation of multi-phase flows. The augmented Lagrangian parameter is estimated by an automatic analysis of the discretization matrix resulting from the approximation of the momentum equations. The algebraic automatic augmented Lagrangian 3AL approach is validated on the natural convection in a differentially heated cavity, a two-dimensional collapse of a water column, the three-dimensional settling of a particle in a tank and the falling of a dense cylinder in air. Finally, the 3AL method is utilized to simulate the hydroplaning of a tire under various pattern shape conditions.
机译：自由表面流和移动障碍物之间相互作用的数值模拟被认为用于滑水流动的分析。提出了一种新的增广的拉格朗日方法，并结合了虚拟域和惩罚方法，以模拟多相流。通过对动量方程近似得出的离散化矩阵进行自动分析，可以估计出增强的拉格朗日参数。代数自动增强拉格朗日3AL方法在以下条件下得到了验证：差热腔中的自然对流，水柱的二维塌陷，水箱中颗粒的三维沉降以及空气中高密度圆柱体的下落。最后，利用3AL方法来模拟各种花纹形状条件下的轮胎滑水。

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