Affiliation:
1. Key Laboratory of Key Technology on Agricultural Machine and Equipment, College of Engineering, South China Agricultural University, Ministry of Education, Guangzhou 510642, China
2. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract
The cleaning system is a critical component of the sugarcane chopper harvester, facing challenges such as high impurity rate, elevated power consumption, and an inadequate understanding of the cleaning mechanism. This study aims to simulate the process of removing extraneous matter (represented by sugarcane leaves) from the cleaning system by employing a coupling approach of computational fluid dynamics (CFD) and the discrete element method (DEM) to determine the speed of the extractor fan. Initially, a CFD model was established to analyze the airflow field within the extractor, and its accuracy was verified on a test bench for the cleaning system. Subsequently, a DEM model was developed for sugarcane billets and leaves, which was then integrated with the CFD model to form a gas–solid coupling model. The efficacy of this integrated model was confirmed through experimental measurements of impurity rate. Furthermore, a ternary quadratic regression orthogonal combination design was utilized in the gas–solid coupling simulation to assess the impacts of feed rate, leaf–stalk ratio, and extractor fan speed on impurity rate. Finally, the extractor fan speeds were obtained for various feed rates and leaf–stalk ratios under impurity rates of 5%, 6%, 7%, and 8%. This research can guide in controlling the extractor fan speed during sugarcane chopper harvester field operations and can serve as a foundation for extractor fan design.
Funder
The National Natural Science Foundation of China
Guangdong Basic and Applied Basic Research Fund
Science and National Sugar Industry Technology System
Reference35 articles.
1. Sugarcane leaf-stalk separating technology: A critical review;Huo;Biosyst. Eng.,2023
2. Discrete element simulation modeling method and parameter calibration of billet;Ren;J. South China Agric. Univ.,2022
3. Optimization and experiment on structural parameters of impeller of extractor of sugarcane harvester;Xing;Trans. Chin. Soc. Agric. Eng.,2021
4. Pneumatic design of small sugarcane harvester fan;Wang;J. Agric. Mech. Res.,2015
5. Effect of sugarcane chopper harvester extractor parameters on impurity removal and cane losses;Wang;IFAC-Pap. Online,2018