基于泥鳅体表的水稻直播机仿生滑板设计与试验

doi:10.13229/j.cnki.jdxbgxb.20230666

吉林大学学报(工学版) ›› 2024, Vol. 54 ›› Issue (5): 1482-1492.doi: 10.13229/j.cnki.jdxbgxb.20230666

• 农业工程·仿生工程 • 上一篇

基于泥鳅体表的水稻直播机仿生滑板设计与试验

张国忠^1,²(),丁凯权^1,²,李正博^1,²,陈龙^1,²,唐楠锐^1,²,刘婉茹^1,²,黄海东^1,²,周勇^1,²,王洪昌^1,²()

^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

收稿日期:2023-10-12 出版日期:2024-05-01 发布日期:2024-06-11
通讯作者: 王洪昌 E-mail:zhanggz@mail.hzau.edu.cn;wanghc84@mail.hzau.edu.cn
作者简介:张国忠（1971-），男，教授，博士.研究方向：现代农业装备设计与测控. E-mail：zhanggz@mail.hzau.edu.cn
基金资助:
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)

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

Guo-zhong ZHANG^1,²(),Kai-quan DING^1,²,Zheng-bo LI^1,²,Long CHEN^1,²,Nan-rui TANG^1,²,Wan-ru LIU^1,²,Hai-dong HUANG^1,²,Yong ZHOU^1,²,Hong-chang WANG^1,²()

^1.College of Engneering，Huazhong Agricultural University，Wuhan 430070，China
^2.Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River，Ministry of Agriculture and Rural Affairs，Wuhan 430070，China

Received:2023-10-12 Online:2024-05-01 Published:2024-06-11
Contact: Hong-chang WANG E-mail:zhanggz@mail.hzau.edu.cn;wanghc84@mail.hzau.edu.cn

摘要/Abstract

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F_B 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。

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

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 F_B 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.

Key words: agricultural mechanization engineering, loach biomimetic, non-smooth surface, paddy soil, reduce adhesion and resistance

中图分类号:

S233.71

张国忠,丁凯权,李正博,陈龙,唐楠锐,刘婉茹,黄海东,周勇,王洪昌. 基于泥鳅体表的水稻直播机仿生滑板设计与试验[J]. 吉林大学学报(工学版), 2024, 54(5): 1482-1492.

Guo-zhong ZHANG,Kai-quan DING,Zheng-bo LI,Long CHEN,Nan-rui TANG,Wan-ru LIU,Hai-dong HUANG,Yong ZHOU,Hong-chang WANG. Design and experiment of biomimetic sliding plate for rice direct seeding machine based on loach body surface[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(5): 1482-1492.

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序号	试验因素
序号	沟宽/mm	沟深/mm	来流速度/（m·s^-1）
1	3，3.5，4，4.5，5	4	1
2	4	3，3.5，4，4.5，5	1
3	4	4	0.25，0.5，0.75，1，1.25

编码	沟宽/mm	沟深/mm	来流速度/（m·s^-1）
-1	4	3	0.75
0	4.5	3.5	1
1	5	4	1.25

序号	w/ mm	h/ mm	v/ （m·s^-1）	仿生表面总阻力/N	光滑表面总阻力/N	减阻率/ %
1	0	0	0	243.141	270.067	9.970
2	1	-1	0	245.010	270.268	9.346
3	-1	0	-1	186.032	206.754	10.023
4	0	1	1	311.008	345.763	10.052
5	1	0	1	304.679	338.468	9.983
6	0	-1	1	305.898	338.990	9.762
7	-1	1	0	252.271	276.141	8.644
8	1	1	0	249.157	275.241	9.477
9	0	-1	-1	182.567	202.181	9.701
10	0	1	-1	185.699	206.449	10.051
11	-1	0	1	311.533	345.763	9.900
12	-1	-1	0	250.213	276.220	9.415
13	0	0	0	243.141	270.067	9.970
14	1	0	-1	181.819	201.861	9.929
15	0	0	0	243.141	270.067	9.970

含水率/%	拟合结果
含水率/%	屈服应力τ₀/Pa	稠度系数 k/（Pa·s^-1）	幂律指数n	R²
40	1823.63	6455.87	0.95	0.964
45	831.26	1264.58	0.42	0.960
50	131.91	401.70	0.55	0.986
55	120.45	78.16	0.63	0.992
60	16.22	24.17	0.60	0.990

来源	平方和	自由度	均方	F值	P值
模型	31 016.11	9	3 446.23	11 694.84	<0.000 1
w	46.96	1	46.96	159.37	<0.000 1
h	26.09	1	26.09	88.54	0.000 2
v	30 876.25	1	30 876.25	1.05E+05	<0.000 1
wh	1.09	1	1.09	3.7	0.112 2
wv	1.74	1	1.74	5.92	0.059 2
hv	0.978	1	0.978	3.32	0.128 1
w²	30.46	1	30.46	103.36	0.000 2
h²	36.62	1	36.62	124.25	0.000 1
v²	0	1	0	0.000 1	0.993 6
残差	1.47	5	0.294 7
失拟项	1.47	3	0.491 1
纯误差	0	2	0
总计	31 017.58	14

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

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序号	仿生非光滑滑板模型的运动阻力F_B /N	光滑滑板模型的运动阻力F_S /N	减阻率Dec/%
平均值	139.53	155.43	10.23
1	136.23	150.63	9.56
2	137.38	155.79	11.82
3	140.87	155.78	9.57
4	142.74	160.46	11.04
5	140.43	154.48	9.10

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