基于两相流欧拉方法的翼型结冰数值模拟

文章通过计算流体力学的方法对翼型结冰进行了预测。针对拉格朗日法求解水滴收集特性计算工作量太大的缺点,引入水滴流场的概念,通过求解空气-水滴两相流场的欧拉方法,获得翼型表面水滴收集特性。结冰计算过程中网格采用变形网格技术得到,既保证了网格质量又减少了网格生成的工作量,采用有限体积法及LU-SGS隐式时间推进数值求解N-S及水滴运动方程。建立了对应于霜冰和光冰的冰增长模型。通过对NACA0012翼型霜冰和光冰的计算验证了该方法是有效的。

Applying Eulerian Droplet Impingement Model to Numerically Simulating Ice Accretion but with Some Improvements

Aim.We apply the model employed by Refs.3,4 and 5 but differ from their method in that we employ several approximate unsteady processes instead of their several quasi-steady processes.Section 1 of the full paper explains how to generate the initial computational grid by solving elliptic equations and by employing the modified TFI method based on the interpolation of block corner displacements during the grid deformation per time step in unsteady flow simulation.Section 2 uses the Eulerian two-phase flow mod...