Abstract
Based on CFD, a comparative analysis of the lift coefficient, drag coefficient, and lift-to-drag ratio of NACA4412 hydrofoil under different influencing factors was carried out. The results show that when the cavitation number is small, the lift and drag coefficient increase monotonically with the angle of attack, while the lift-to-drag ratio decreases monotonically with the angle of attack; both the lift coefficient and lift-to-drag ratio increase monotonically with the cavitation number, and the drag coefficient first increases and then decreases with the decrease of cavitation number; both the lift coefficient and lift-to-drag ratio decreases monotonically with Reynolds number, while the drag coefficient decreases monotonically with Reynolds number as a whole; on the premise of constant Reynolds number, the size has a greater influence on the lift and drag coefficient and a smaller influence on the lift-drag ratio.
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