基于泥鳅体表的水稻直播机仿生滑板设计与试验
Design and experiment of biomimetic sliding plate for rice direct seeding machine based on loach body surface
张国忠 1丁凯权 1李正博 1陈龙 1唐楠锐 1刘婉茹 1黄海东 1周勇 1王洪昌1
作者信息
- 1. 华中农业大学 工学院,武汉 430070;农业农村部长江中下游农业装备重点实验室,武汉 430070
- 折叠
摘要
针对水稻直播机滑板在扰动饱和水田环境中黏附重和阻力大的问题,显微观测得到泥鳅体表非光滑表面;利用Fluent软件进行仿真分析,揭示了该非光滑表面减黏降阻的原理;采用Box-Behnken响应面法设计试验,得到沟槽非光滑表面总阻力FB与沟宽w、沟深h和来流速度v的回归方程,最优化分析结果表明,当w为4.5 mm、h为4 mm、v为1.25 m/s时,最大减阻率达10.052%;基于最优参数试制了水稻直播机仿生滑板,开展了室内水田土槽试验,最终减阻率达10.23%.本研究可为水田触土部件减黏降阻技术开发提供新思路.
Abstract
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.
关键词
农业机械化工程/泥鳅仿生/非光滑表面/水田土壤/减黏降阻Key words
agricultural mechanization engineering/loach biomimetic/non-smooth surface/paddy soil/reduce adhesion and resistance引用本文复制引用
基金项目
国家自然科学基金面上项目(51775220)
湖北省高等学校优秀中青年科技创新团队计划(2019)(T201934)
出版年
2024
NETL
NSTL
万方数据