A numerical approach for the direct computation of flows including fluid-solid interaction: Modeling contact angle, film rupture, and dewetting
A numerical approach for the direct computation of flows including fluid-solid interaction: Modeling contact angle, film rupture, and dewetting
复制标题
直接计算流动（包括流固相互作用）的数值方法：模拟接触角、薄膜破裂和去湿
DOI：
--
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
L. Kondic
中科院分区：
文献类型：
--
作者：
K. Mahady;S. Afkhami;L. Kondic
在本文中，我们提出了一个计算效率高的方法，包括流固相互作用的直接数值模拟的Navier-Stokes方程。这种方法被认为是强大的，因为我们的早期公式[K。Mahady等人，“A volume of fluid method for simulating fluid/fluid interfaces in contact with solid boundaries，”J. COMPUT. Phys.294，243（2015）]，同时在计算效率方面优于早期方法。所提出的方法的性能和有效性证明通过计算液滴在平衡时的接触角。此外，我们研究了由于不稳定的流固相互作用的膜的不稳定性，并讨论了接触角和惯性效应对膜破碎的影响。特别是，直接模拟结果表明，增加的最终特征长度尺度相比，线性稳定性分析的预测，这表明显着的非线性效应的影响。我们的研究结果还表明，新兴L...
In this paper, we present a computationally efficient method for including fluid-solid interactions into direct numerical simulations of the Navier–Stokes equations. This method is found to be as powerful as our earlier formulation [K. Mahady et al., “A volume of fluid method for simulating fluid/fluid interfaces in contact with solid boundaries,” J. Comput. Phys. 294, 243 (2015)], while outperforming the earlier method in terms of computational efficiency. The performance and efficacy of the presented method are demonstrated by computing contact angles of droplets at equilibrium. Furthermore, we study the instability of films due to destabilizing fluid-solid interactions, and discuss the influence of contact angle and inertial effects on film breakup. In particular, direct simulation results show an increase in the final characteristic length scales when compared to the predictions of a linear stability analysis, suggesting significant influence of nonlinear effects. Our results also show that emerging l...