In recent years, the problem of aircraft icing caused by ice crystals has attracted wide attention. For the mixed phase (ice crystals and supercooled droplets coexisting) icing problem, the numerical simulation method is used to predict the ice shape. The transition Shear-Stress Transport (SST)turbulence model is adopted in the calculation of air flow field and convective heat transfer. The ice crystal and droplet collection coefficients are calculated based on the Eulerian method. Based on the classical Messinger icing model, the heat and mass transfer process on a two-dimensional surface under the mixed phase icing condition is analyzed, and the icing thermodynamic model suitable for the mixed phase icing is established. Meanwhile, considering the adhesion effect of ice crystals, an empirical formula of adhesion efficiency is added. The mixed phase icing thermodynamic model is solved based on FLUENT and its User Defined Function (UDF). The rime ice and glaze ice conditions are simulated on NACA0012 airfoil. The computational results are compared with foreign wind tunnel experimental results and show agreement. The results show that the effect of ice crystal adhesion has a significant influence on the amount and the shape of ice. Ice accumulation tends to be wedge-shaped under glaze ice condition.
BU Xueqin
,
LI Hao
,
HUANG Ping
,
LIN Guiping
. Numerical simulation of mixed phase icing on two-dimensional airfoil[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020
, 41(12)
: 124085
-124085
.
DOI: 10.7527/S1000-6893.2020.24085
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