An Efficient and Robust Ice Accretion Code: NUAA-ICE2D

摘要

This paper describes an icing software toolkit applied to predict the ice accretion layer by layer on the surface of airfoil. Based on modular programming method, this code consists of five separate modules with functions respectively as geometry redefinition, grid generation, airflow calculation, calculation of droplet impingement, and analysis of ice-layer growth. Once the multi-step algorithm is activated, all the modules will be executed automatically and repeatedly controlled by this software until the accumulated icing time is equal to set value. The initial conditions and control parameters can be input via user interface expediently. Some improvements are presented: the fan-shaped partition method used to reconstruct the mesh and update the flow-field locally near the icing region, velocity interpolation based on the local surrounding grid cells, changeable time step used for the calculations of forward motion for droplets, a mesh share used in airflow and ice growth calculations. These new ideas make the icing calculations more quickly, efficiently and stably than before. At last, this code is tested and verified on the NACA 0012 airfoil with rime ice and glaze ice conditions. The available results from NUAA-ICE2D code are compared with that obtained from the experiment and other icing codes.