Effect of deformation and breakup characteristic on supercooled large droplet icing process

To reveal and master the effects of the droplets deformation and breakup under supercooled large droplet (SLD) conditions, a numerical solver was developed to simulate the ice accretion. The ice accretion on the NACA 0012 airfoil was predicted. For the SLD movement, the droplet deformation and breakup process was investigated using a dynamically varying drag model and Taylor analogy method. Using the above methods, the numerical simulation of ice accretion and icing effects at the deformation and breakup of SLD was performed. These numerical results were compared with the computational and experimental data in several past literatures. The results are in good agreement with experimental data, indicating that the models and methods are feasible and effective. And the comparative results show that accounting of deformation and breakup has made significant improvement to the simulation of the droplet trajectory and ice shape distribution for the SLD icing prediction.