Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing Platform
Targeting the problems of low precision and heavy workload in conventional screening of filled and unfilled grain in single-plant rice testing, a screening system for filled and unfilled grain was designed based on the coupling of the wind and gravity fields. In this study, the motion state of fille...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/12/3069 |
| _version_ | 1797461873769054208 |
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| author | Hao Dong Baofeng Zhang Tao Jiang Yifu Zhang Jiwei Qu Chao Chen Yawen Xiao Yuhao Ding Xiaobo Xi |
| author_facet | Hao Dong Baofeng Zhang Tao Jiang Yifu Zhang Jiwei Qu Chao Chen Yawen Xiao Yuhao Ding Xiaobo Xi |
| author_sort | Hao Dong |
| collection | DOAJ |
| description | Targeting the problems of low precision and heavy workload in conventional screening of filled and unfilled grain in single-plant rice testing, a screening system for filled and unfilled grain was designed based on the coupling of the wind and gravity fields. In this study, the motion state of filled and unfilled grain in the flow field and the results of screening were analyzed and combined with aerodynamics. In order to reveal the influence law of the structural and working parameters of the screening system on the screening performance and determine the optimal parameter combination, this study conducted a quadratic regression orthogonal rotating center combination test with four factors and three levels based on the DEM–CFD coupling method. The relationship between air inlet wind speed, air cross-section shape, horizontal distance, vertical distance, and removal rate was studied. The results showed that, in a certain range, the removal rate was positively correlated with the section width of the outlet, positively correlated with the wind speed, and negatively correlated with the vertical distance and horizontal distance of the seed-drop outlet. The optimization results showed that, when the section width of the outlet was 75.44 mm, the wind speed was 8.90 m·s<sup>−1</sup>, the transverse distance was 198.78 mm, and, when the vertical distance was 34.87 mm, the screening rate of the screening system could reach 99.6%. |
| first_indexed | 2024-03-09T17:26:32Z |
| format | Article |
| id | doaj.art-fe432c2e947a432080fcf0c6a6a14475 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T17:26:32Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-fe432c2e947a432080fcf0c6a6a144752023-11-24T12:45:55ZengMDPI AGAgronomy2073-43952022-12-011212306910.3390/agronomy12123069Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing PlatformHao Dong0Baofeng Zhang1Tao Jiang2Yifu Zhang3Jiwei Qu4Chao Chen5Yawen Xiao6Yuhao Ding7Xiaobo Xi8School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou 225127, ChinaTargeting the problems of low precision and heavy workload in conventional screening of filled and unfilled grain in single-plant rice testing, a screening system for filled and unfilled grain was designed based on the coupling of the wind and gravity fields. In this study, the motion state of filled and unfilled grain in the flow field and the results of screening were analyzed and combined with aerodynamics. In order to reveal the influence law of the structural and working parameters of the screening system on the screening performance and determine the optimal parameter combination, this study conducted a quadratic regression orthogonal rotating center combination test with four factors and three levels based on the DEM–CFD coupling method. The relationship between air inlet wind speed, air cross-section shape, horizontal distance, vertical distance, and removal rate was studied. The results showed that, in a certain range, the removal rate was positively correlated with the section width of the outlet, positively correlated with the wind speed, and negatively correlated with the vertical distance and horizontal distance of the seed-drop outlet. The optimization results showed that, when the section width of the outlet was 75.44 mm, the wind speed was 8.90 m·s<sup>−1</sup>, the transverse distance was 198.78 mm, and, when the vertical distance was 34.87 mm, the screening rate of the screening system could reach 99.6%.https://www.mdpi.com/2073-4395/12/12/3069rice assessmentDEM-CFDsingle-plant threshingorthogonal test |
| spellingShingle | Hao Dong Baofeng Zhang Tao Jiang Yifu Zhang Jiwei Qu Chao Chen Yawen Xiao Yuhao Ding Xiaobo Xi Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing Platform Agronomy rice assessment DEM-CFD single-plant threshing orthogonal test |
| title | Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing Platform |
| title_full | Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing Platform |
| title_fullStr | Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing Platform |
| title_full_unstemmed | Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing Platform |
| title_short | Design and Optimization of Rice Grain Screening System Based on DEM–CFD Coupled Rice Seed Testing Platform |
| title_sort | design and optimization of rice grain screening system based on dem cfd coupled rice seed testing platform |
| topic | rice assessment DEM-CFD single-plant threshing orthogonal test |
| url | https://www.mdpi.com/2073-4395/12/12/3069 |
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