Structure optimization for the discharge arm of the self-propelled forage harvester based on CFD-DEM

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2024-10-29 DOI:10.1016/j.powtec.2024.120399

Lei Liu, Xiaoyu Li, Yuefeng Du, Guorun Li, Yucong Wang, Du Chen, Zhongxiang Zhu, Zhenghe Song

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Abstract

To optimize the structure of the discharge arm of the self-propelled harvester and improve the harvesting efficiency to reduce the loss, we first established a mathematical model of the gas-solid two-phase of the forage in the unloading process. Next, we revealed the flow characteristics of forage and the influence of key structures of the discharge arm using the CFD-DEM. Then, we optimized the key structural parameters of the discharge arm using the orthogonal test and response surface method. Finally, we carried out the simulation and field experiment on the forage conveying performance of the discharge arm. The experimental results show that the maximum conveying distance of the new discharge arm is more than 27 m, significantly reducing the spraying loss and improving the harvesting efficiency. Our research findings provide a new reference for optimizing the agricultural material conveying machines and exploring the movement characteristics of agricultural materials in different pipelines.

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基于 CFD-DEM 的自走式牧草收割机卸料臂结构优化

为了优化自走式收割机卸料臂的结构，提高收割效率，减少损失，我们首先建立了卸料过程中牧草气固两相的数学模型。接着，我们利用 CFD-DEM 揭示了牧草的流动特性以及卸料臂关键结构的影响。然后，我们利用正交试验和响应面法优化了卸料臂的关键结构参数。最后，我们对卸料臂的牧草输送性能进行了模拟和现场实验。实验结果表明，新型卸料臂的最大输送距离大于 27 米，显著降低了喷洒损失，提高了收割效率。我们的研究成果为优化农业物料输送机械、探索农业物料在不同管道中的运动特性提供了新的参考。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.