Numerical and experimental study on the performance of a stabilising turbine inside a seed distribution device

IF 4.4 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Biosystems Engineering Pub Date : 2024-08-15 DOI:10.1016/j.biosystemseng.2024.08.009

Lei Wang , Wenli Xiao , Binbin Shi , Xiaoran Li , Qingxi Liao , Yitao Liao

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引用次数: 0

Abstract

A design was proposed for a seed turbine installed within the distribution device to reduce the influence of surface slope variations on the uniformity of seeding mass at each row. Through a comparative analysis based on the computational fluid dynamics (CFD) 6 degrees of freedom (DOF) dynamic mesh model simulation and the bench test, the influence of five different stabilising turbines on airflow distribution performance was investigated. The type Ⅰ stabilising turbine, characterised by acute inlet and outlet angles, exhibited a smaller vortex region at the blade inlet and improved the conveying and mixing performance of the seed. A CFD 6DOF simulation experiment was conducted to investigate the influence of the type I stabilising turbine on the airflow field distribution. As the number of blades increased from 4 to 10, the stability and uniformity of the conveying airflow distribution were enhanced at the turbine outlet. Simulations using a comprehensive performance test platform of the planter evaluated the influence of stabilising turbines with different numbers of blades on uniformity during field operations at varying surface slopes. When the angles of the front-rear and lateral one-way oscillation combination, and the front-rear and lateral reciprocating oscillation combination varied within the range of −5°–5°, the stabilising turbine with 8 blades exhibited the smallest uniformity coefficient of variation of the seeding mass at each row. The values ranged from 4.1 % to 5.8 % for rapeseeds and from 3.8 % to 5.0 % for wheat seeds.

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关于种子分配装置内稳定涡轮性能的数值和实验研究

为减少表面坡度变化对每行播种质量均匀性的影响，提出了在分配装置内安装种子涡轮的设计方案。通过基于计算流体动力学（CFD）6 自由度（DOF）动态网格模型模拟和台架试验的对比分析，研究了五种不同稳定涡轮对气流分布性能的影响。第Ⅰ型稳定涡轮的特点是进气和出气角度锐利，在叶片入口处表现出较小的涡流区域，改善了种子的输送和混合性能。为研究 I 型稳定涡轮对气流场分布的影响，进行了 CFD 6DOF 模拟实验。随着叶片数量从 4 个增加到 10 个，涡轮出口处输送气流分布的稳定性和均匀性得到了提高。利用播种机的综合性能测试平台进行模拟，评估了不同叶片数量的稳定涡轮在不同地表坡度下进行田间作业时对均匀性的影响。当前后和横向单向摆动组合以及前后和横向往复摆动组合的角度在 -5°-5° 范围内变化时，8 片叶片的稳定涡轮在每行播种质量的均匀性变化系数最小。油菜籽的均匀度变化系数在 4.1 % 到 5.8 % 之间，小麦种子的均匀度变化系数在 3.8 % 到 5.0 % 之间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biosystems Engineering 农林科学-农业工程

CiteScore

10.60

自引率

7.80%

发文量

239

审稿时长

53 days

期刊介绍： Biosystems Engineering publishes research in engineering and the physical sciences that represent advances in understanding or modelling of the performance of biological systems for sustainable developments in land use and the environment, agriculture and amenity, bioproduction processes and the food chain. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems.