发动机防冰支板水滴撞击特性的数值研究

Numerical Analysis of Trajectories of Water Droplets on the Anti-icing Vane of an Engine

在对发动机防冰支板附近的流场进行计算的基础上,使用离散相模型在拉氏坐标下模拟了该流场中过冷水滴的运动轨迹,对发动机防冰支板的水滴撞击特性进行了研究。研究表明,水滴撞击极限、总收集系数和局部收集系数随飞行高度、来流速度及水滴直径的增加而增大。

Based on the calculation of flow field around anti-icing vane of an engine, trajectories of the water droplets on the anti-icing vane of an engine was investigated by using the Lagrange approach to simulated overcooled water droplet trajectories in flow field with discrete phase models. And the trajectories of water droplets on different leading edge of vane are compared. Results are shown that the impact range, total and local collection coefficient increased with increasing of flight height, flight velocity and droplet diameter.