Experimental and numerical investigations of snow accretion
Résumé
To ensure safe flight under snowy conditions, aircraft manufacturers must demonstrate that each engine and its air inlet system can operate throughout the flight power range of the engine (including idling) in snow, both falling and blowing. This study is part of an effort to develop models for snow accretion. More specifically, the focus is on the transport step, taking into account both dynamic aspects (with the estimation of the particle trajectory) and thermal effects (with possible melting of snow crystals/snowflakes). Experiments and numerical simulations are compared for the estimation of the drag coefficient in the context of a free falling snowflake. Thermal effects observed during the melting of a snowflake in forced convection are also studied.
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