Design and experiment of biomimetic sliding plate for rice direct seeding machine based on loach body surface
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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