What is it about?
Safety operations under snow conditions is a certification requirement by the civil aviation regulatory agencies for aircraft and their respective propulsion systems. However, snow particle interactions and accretion physics on heated/unheated, stationary/rotating components is yet to be well understood. The ICE-GENESIS Project aimed to support the development of new generation 3D icing engineering tools addressing Appendix C, O and Snow, for safe, efficient, and cost-effective design and certification of future aircraft and rotorcraft. Under this context the present paper showcases the predicting capability of an in-house 2D steady state Ice Accretion Tool (ICAT) for un-heated surfaces. For snow accretion predictions, GE developed sticking model and incorporated into in-house Ice Crystal Accretion Tool (ICAT). The ICAT ice thickness and shapes predictions are verified for various operating conditions against the experimental data from ICE-GENESIS partners (RTA Climatic Wind Tunnel in Vienna, Austria, and RATFac Test Cell at National Research Council in Ottawa, Canada).
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Why is it important?
Snow accretion is a poorly understood phenomenon and while supercooled liquid droplet icing and ice crystal icing models have matured over the years, very little progress has been made with regards to the development of snow modeling tools. The present paper aims to fill this gap by means of improving modeling efforts concerning snow accretion prediction.
Perspectives
The snow accretion modeling capability was enhanced for wide range of experimental conditions by in-house fine tuning of the ONERA sticking efficiency model as well as compensating for snow morphology with the erosion based on NRC erosion model. The comparison of snow accretion predictions showed reasonably good cross-comparison with the experimental results for maximum accretion thickness. The findings and lessons learnt provide a strong foundation and pave path for further development of robust and accurate snow accretion models.
Dr Paolo Vanacore
GE Aerospace
Read the Original
This page is a summary of: Ice Accretion Modeling for Snow Particles on Unheated NACA0012 Airfoil, July 2024, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2024-3527.
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