结冰计算中翼面网格重构研究

对结冰数值计算中的网格生成进行了深入研究,针对结冰后几何边界的复杂性及边界依赖于时间步长变化对网格生成的影响展开了分析.网格生成是结冰计算的基础,文中基于求解椭圆形偏微分方程(PDEs)生成了未结冰时翼面周围的背景网格,采用Hilgenstock源项构造方法,合理控制了结冰边界周围的网格间距和正交性.模型表面结冰后,为...

Research of Grid Reconstruction on Wing Surfaces for Icing Calculation

This article studies grid generation for the calculation of airfoil ice accretion; in particular, it analyzes how to deal with the effect brought by geometrically complex and time-dependent leading edge accretion. As the first step of icing calculation, a grid is generated by solving the elliptic partial differential equations(PDEs). The forcing terms are automatically chosen in the manner of Hilgenstock method such that orthogonality and spacing control on the icing smoothed boundary are achieved. In order to improve the efficiency, quality and reliability of grids, two partition ideas and grid reconstruction methods are introduced and validated simultaneously. Finally, validation of the usefulness of the method developed is completed on two and three dimensional airfoils using the NUAA-ICE3D software, which has integrated the grid modules.