基于 Fluent软件的旋风分离清选系统仿真研究

摘要

Studying on cyclone separation cleaning system of the wheat combine harvester in this paper, its core component --cyclone separation cylinder is computed by using the Gambit software, numerical modeling of the internal flow field is com-pleted by using the Fluent software.The movement of wheat grain, stems and shells in the separation barrel is simulated by u-sing DPM model, and after comparative analysis of these three models in the aspects of the separation efficiency, stalk separa-tion efficiency and wheat grain loss rate, the optimal model is obtained and then tested by experimental verification.%以小区小麦联合收获机的旋风分离清选系统为研究对象，运用Gambit软件对其核心部件－旋风分离筒前处理，运用Fluent软件对其内部流场进行了数值模拟。采用DPM模型模拟了小麦颗粒、茎秆和颖壳在分离筒中的运动情况，以颖壳分离效率、茎秆分离效率和小麦籽粒损失率为评价指标，对三种模型进行了对比分析，获得最优模型并进行了实验验证。