茶园风力除虫机通风管道三维数值模拟

为改进和优化茶园风力除虫机通风管道的结构,结合流体力学雷诺时均N–S方程、 Simple流场求解算法、к–ε湍流模型,利用Fluent软件对茶园风力除虫机通风管道进行了数值模拟计算,得到了风量为16 m3/min的中亚风机在空载状态下通风管道内部流场的特征.通过数值模拟计算分析,两进风口由相距400 mm缩短至280 mm时,出风口风速分布较均匀

Three-dimension numerical simulation of ventilation pipeof a wind-driven insect-killing machine for tea garden

In order to get uniform velocity distribution of airflow across the outlet,ventilation pipe structure of tea wind-driven insect-killing machine for tea garden was improved and optimized and the Reynolds-Averaged N-S equation in fluid mechanics,the Simple Algorithm for Flow and к-ε turbulence model were applied to calculate the numerical simulation model of ventilation pipeline using the Fluent software.With flow rate of the medium-pressure blower being 16 m3/min,the internal flow characteristics of ventilation pipe under no-load condition were obtained.Numerical analysis indicates when the distance between the two air inlets is 280 mm,the velocity distribution of airflow across the outlet is uniform.