[Retracted] Mechanism of Drag Reduction in Floating Plate of Paddy Field Based on CFD

Figure 15

Streamline diagram of different bottom structures: (a) Velocity distribution and partial enlargement diagram of concave envelope at 365 mm. (b) Velocity distribution and partial enlargement diagram of convex hull at 365 mm. (c) Velocity distribution and partial enlargement diagram of groove at 365 mm (enlarged as groove superficial zone).

(a)

(b)

(c)