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

作　　者：张国忠[1,2] 丁凯权 李正博 陈龙 唐楠锐 刘婉茹 黄海东 周勇[1,2] 王洪昌 ZHANG Guo-zhong;DING Kai-quan;LI Zheng-bo;CHEN Long;TANG Nan-rui;LIU Wan-ru;HUANG Hai-dong;ZHOU Yong;WANG Hong-chang(College of Engneering,Huazhong Agricultural University,Wuhan 430070,China;Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River,Ministry of Agriculture and Rural Affairs,Wuhan 430070,China)

机构地区：[1]华中农业大学工学院,武汉430070 [2]农业农村部长江中下游农业装备重点实验室,武汉430070

出　　处：《吉林大学学报（工学版）》2024年第5期1482-1492,共11页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金面上项目(51775220);2019年度湖北省高等学校优秀中青年科技创新团队计划项目(T201934)。

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4mm、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。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 

分 类 号：S233.71[农业科学—农业机械化工程]