The purpose of this study is to perform a comprehensive analysis on the influence of heavy rain upon the aerodynamic efficiency of two different airfoil structures. A simulation model was performed through the analysis using a commercial software ANSYS. Comparison of the effect of the rainfall was executed by comparing our software simulation output with findings in reported available literature. It is very hard and expensive to evaluate the performance degradation under heavy rain experimentally. This analytical study depicts the consistent degradation of performances of some aerofoil structure under heavy rain. Discrete Phase Modeling (DPM) has achieved considerable accurate result for our simulation for the stall of the aircraft.
angle of attack, lift, drag, DPM, CFD.
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