Effect of blowing out on NACA0012 airfoil surface in order to prevent of ice accretion was studied numerically. Holes with regular pattern were generated over the leading edge of airfoil. Velocity of air injection, diameter, pitch of holes, and symmetrical angle of two rows about of cord line and arrangement of holes, diamond, and rectangle were varied. Shear-stress transport k-ω model was chosen to simulate the turbulence closure model, which makes better prediction for the case of pressure gradient over airfoils. Protective layer of air injections caused to prevent water droplets from the impact and strike to the airfoil surface. Results indicated that the diameter has the most effect on lowering of the ice accretion. In addition, pitch of the holes has the second most important role for reduction of ice weight. Reduction of 89% in the ice accretion in the presence of blowing out was achieved.

数值研究了吹气对NACA0012机翼表面的影响，以防止积冰。在翼型的前缘上产生了规则的孔。空气注入的速度，直径，孔的间距以及两行绕绳线的对称角度以及孔，菱形和矩形的排列均发生了变化。选择剪切应力传递k-ω模型来模拟湍流闭合模型，这可以更好地预测翼型上的压力梯度。注入空气的保护层可防止水滴撞击和撞击机翼表面。结果表明，直径对降低积冰影响最大。另外，孔的间距对于减小冰的重量具有第二重要的作用。