In response to the problem of heavy adhesion and high resistance of the rice direct seeder skateboard in the disturbed and saturated paddy field,the non-smooth surface of the loach body was observed microscopically;Using Fluent software for simulation and analysis,the principle of reducing viscosity and resistance on the non-smooth surface has been revealed;The Box Behnken response surface method was used to design the experiment and obtain the regression equations of the total resistance FB of the non-smooth surface of the groove with the groove width w,groove depth h,and inflow velocity v.The optimization analysis results showed that the maximum drag reduction rate reached 10.052%when w was 4.5 mm,h was 4 mm,and v was 1.25 m/s;Based on the optimal parameters,a biomimetic sliding plate for rice direct seeding machine was designed,and indoor paddy soil tank experiments were conducted,with a drag reduction rate of 10.23%ultimately.This study can provide new ideas for the development of viscosity reduction and resistance reduction technology for paddy field soil contacting components.
agricultural mechanization engineeringloach biomimeticnon-smooth surfacepaddy soilreduce adhesion and resistance
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