Simulation approach of ice accretion on airfoil surface

A numerical simulation approach was presented to simulate the ice accretion on airfoil, which dealt with the way of ice accretion under various atmospheric conditions. Based on conservation of mass and energy in a set of determined control volumes, ice accretion was simulated with dynamic mesh model and user defined function (UDF) in FLUENT in proper ice growing mode. Agreement of the results of local collection efficiencies and simulated ice shape with those of reference shows that the method is correct and general. The comparison of results of two ice growing mode shows it is more logical that the ice is accreted along the normal of the iced surface. While local collection efficiencies are constant, the ice shape with no water running along the surface is very similar to that with water running along the surface.