期刊论文

Simulation Analysis of Airflow Field Characteristics in Drying Cylinder of Rapeseed Spin Dryer

中文

中国农业科技导报

1008-0864

2019

21

9

77-83

10.13304/j.nykjdb.2019.0250

湖南省政府重大专项（湘府阅[2014]35号）； 湖南省科技厅平台建设项目（湘财教指[2014]10号）;湖南省科技厅重点项目（2017NK2131）资助；

本校为第一机构

为了避免油菜旋风式烘干机作业时已达到烘干效果的油菜籽不能及时分离,导致油菜籽过度干燥,借助Ansys Fluent软件对油菜旋风式烘干机主要工作部件干燥筒的气力流场进行仿真分析,探究干燥筒的气流入口型式、入口气流速度及入口截面积大小等因素对干燥筒内油菜籽的分离性能的气力流场旋转强度、速度分量和压降等指标的影响规律。进一步预估并仿真分析油菜籽有效分离的干燥筒出口气流场特性,利用毕托管对干燥筒出口气流场风速进行测量,验证了该仿真模拟方法的正确性。结果表明:干燥筒气流入口型式采用蜗壳式所形成的气流场承载和分离物料能力优于切向式;当入口截面积一定时,速度越大,干燥筒内气流场...

In order to avoid the appearence when the already being dried rapeseed could not be separated in time during the operation of rapeseed spin dryer,this paper simulated the air flow field of main working part of rapeseed spin dryer-drying cylinder with the software Ansys Fluent,and explored the effect of airflow inlet type,velocity of inlet airflow and inlet sectional area etc. factors of the drying cylinder on rotational strength of airflow field,velocity component and pressure drop etc. indexes. The paper also estimated,simulated and analyzed the characteristics of outlet airflow field of dryi...