基于CFD的扫路车吸尘盘吸尘性能分析及结构优化  

Analysis and structural optimization of suction nozzle suction performance of road sweeper based on CFD

作　　者：李路阳 关红艳 李勇[1] LI Luyang;GUAN Hongyan;LI Yong(School of Mechanical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China)

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《农业装备与车辆工程》2025年第3期99-104,116,共7页Agricultural Equipment & Vehicle Engineering

基　　金：甘肃省青年科技基金“基于”形-性“匹配的变参数立铣刀螺旋槽结构优化及磨削成形方法研究”(24JRRA983)。

摘　　要：由于扫路车吸盘不同的高度和纵向宽度以及肩部斜角会产生不同的吸尘效率,利用Fluent对吸盘模型内流场进行模拟分析,研究扫路车吸盘在不同高度和宽度时吸盘前进风口、侧边进风口、近地面和吸尘口的气流平均速度变化,得到吸盘在高度160 mm、纵向宽度220 mm时取值面速度最大,吸尘能力最佳;采用欧拉-拉格朗日离散相模型(DPM)对不同肩部斜角的吸盘进行气固两相流模拟,研究吸盘肩部斜角不同时直径为15 mm的尘粒捕获数量,结果表明当吸盘肩部斜角为8°时吸尘口捕获颗粒数量最多。In response to the varying suction efficiency of road sweeper suction nozzle at different heights,longitudinal widths,and shoulder angles,Fluent was used to simulate and analyze the flow field in the suction nozzle model.Firstly,the average airflow velocity changes of the suction nozzle at the front air inlet,side air inlet,near ground,and suction port of the road sweeper suction nozzle at different heights and widths were studied.It was found that the maximum suction capacity of the suction nozzle was optimal when the suction nozzle was at a height of 160 mm and a longitudinal width of 220 mm;based on the theory of gas-solid two-phase flow,the Euler Lagrange discrete phase(DPM) model was used to simulate the gas-solid two-phase flow of suction nozzle with different shoulder angles.The number of dust particles captured by the suction nozzle with a diameter of 15 mm was studied when the shoulder angle of the suction nozzle was different.The results showed that the suction port captured the most particles when the shoulder angle of the suction nozzle was 8°.

关 键 词：吸盘 纵向宽度 高度 离散相模型 捕获数量 最佳肩部斜角 

分 类 号：U469.691[机械工程—车辆工程]