Surface Heat Transfer Study for Ice Accretion and Anti-icing Prediction in Three Dimension

Abstract

This paper present CANICE-3D, a three dimensional ice-accretion prediction code. This code can predict ice shape over a complete aircraft. The external pow field is based on a potential formulation using commercial CMARC panel code. Droplet trajectories are calculated in 9D considering the potential solution, the atmospheric liquid water content and a mean volumetric diameter distribution of water droplets. Boundary layer correction is added on surface streamlines starting from stagnation points. Thermodynamic balance is performed to predict surface temperature and freezing fraction of water mass which considers running back water. An Anti-Icing model has been coupled in an aim to predict optimal design for its configuration. Emphasis will be presented for thermodynamics and ice accretion formulation as well as anti-icing prediction. The integration of the surface roughness for convective heat transfer coefficient calculation within the boundary layer is described. Implementation of CANICE-3D and comparison of surface heat transfer coefficient and ice accretion prediction in conjunction with experimental data.