Optimization of a three-row air-suction Brassica chinensis precision metering device based on CFD-DEM coupling simulation

作     者：Xinping Sun Hua Li Xindan Qi Dinghao Feng Jianqi Zhou Yongjian Wang Samuel Mbugua Nyambura Xiaoyu Zhang Xi Chen 

作者机构：College of Mechanical and Power EngineeringNanjing Tech UniversityNanjing 211816China Key Laboratory of Intelligent Agricultural Equipment in Jiangsu ProvinceNanjing Agricultural UniversityNanjing 210031China College of EngineeringNanjing Agricultural UniversityNanjing 210031China Jiangsu Xuzhou Transportation Planning and Design InstituteXuzhou 221000China 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2023年第16卷第3期

页      面：130-142页

核心收录：

学科分类：1008[医学-中药学(可授医学、理学学位)] 0828[工学-农业工程] 10[医学] 

基　　金：This research was financailly supported by the National Key R&D Program of China“Vegetable Intelligent Fine Production Technology and Equipment R&D”(Grant No.2017YFD0701302) 

主　　题：Brassica chinensis metering device airflow field Box-Behnken design 

摘      要：This study aimed to optimize a three-row air-suction Brassica chinensis precision metering device to improve the low seeding *** 17.0 Software was used to analyze the effect of different numbers of suction holes and different suction hole structures on the airflow *** was found that a suction hole number of 60 was beneficial to the flow field stability and a conical hole structure was beneficial to the adsorption of ***-Behnken design experiments were carried out with negative pressure,rotational speed,and hole diameter as the experimental *** optimal parameter combination was achieved when the negative pressure was 3.96 kPa,the rotational speed of the seeding plate was 1.49 rad/s and the hole diameter was 1.10 *** qualification rate of inner,middle,and outer rings were 87.580%,90.548%,and 90.117%,respectively,and the miss seeding rate of inner,middle,and outer rings were 10.915%,7.139%,and 5.920%,respectively.