To predict ice shapes on airfoils

a methodology for time-stepping ice accretion simulation was created.A software framework was developed to realize automatic ice accretion calculation and mesh updating process.The ice accretion thermodynamic model was built on Messingers conservation equations for mass and energy.The convective heat transfer coefficient was computed based on an extension of the Spalart-Allmaras turbulence model on rough wall.A new ice growth method was proposed.Test cases show that the present method is capable of simulating long-time rime

glaze ice accretion and the cases with two complex ice horns.Comparison with the experimental ice shape data of a NACA 0012 airfoil shows that the computed results are satisfactory.