基于有限元模拟的超净工作台最优通风截面研究  

Study on optimum ventilation cross section of ultra-clean bench based on finite element simulation

作　　者：杜晶晶 于思源 杨昀硕 DU Jing-jing;YU Si-yuan;YANG Yun-shuo(Sinocelltech Ltd.,Beijing 100176,China;Beijing Minli Energy Storage Technology Co.,Ltd.,Beijing 100176,China;Qing Gong College,North China University of Science and Technology,Tangshan 063000,Hebei Province,China)

机构地区：[1]神州细胞工程有限公司,北京100176 [2]北京民利储能技术有限公司,北京100176 [3]华北理工大学轻工学院,河北唐山063000

出　　处：《医疗卫生装备》2024年第2期28-34,共7页Chinese Medical Equipment Journal

摘　　要：目的:利用有限元模拟仿真软件探究超净工作台满足实验人员正常使用条件下的最优通风截面数据。方法:首先,采用SolidWorks软件构建垂直流超净工作台有限元模型。其次,采用Flow Simulation软件对超净工作台有限元模型进行流体力学模拟,分析超净工作台可升降挡板不同开度(挡板下沿距洁净桌面的距离)时通风截面的气体流速、通风量及通风干扰度。最后,通过综合分析,推导出相对适宜的挡板开度。结果:模拟仿真综合结果显示,随着挡板开度尺寸的增加,超净工作台通风截面的气体流速及通风干扰度降低,而通风量在挡板开度尺寸为225 mm时出现峰值,通风量均值达到376.002 m^(3)/h。结论:挡板开度尺寸控制在225 mm,即通风截面面积为0.248 m^(2)时通风干扰相对较小,气体流速适中,通风量最佳。Objective To explore the data on the optimum ventilation cross section for the ultra-clean bench with finite element simulation software to meet the requirements of experimental personnel in normal conditions.Methods Firstly,a finite element model for the vertical flow ultra-clean bench was constructed with SolidWorks software,then fluid dynamics simulation for the model was carried out with Flow Simulation software to analyze the gas flow rate,ventilation volume and ventilation interference of the cross section in case of different openings of the adjustable baffle(the distance of the lower edge of the baffle from the clean desktop),finally the suitable baffle openning was determined through comprehensive analysis.Results Simulation results showed that the gas flow rate and ventilation interfence decreased with the increase of th baffle openning,and the ventilation volume peaked when the baffle openning was 225 mm and had the average value being 376.002 m^(3)/h.Conclusion The ventilation interference,gas flow rate and ventilation volume prove to have optimum results in case the baffle openning is 225 mm and the ventilation cross-sectional area is 0.248 m^(2).

关 键 词：有限元模拟 超净工作台 挡板开度 气体流速 通风量 通风干扰度 

分 类 号：R319[医药卫生—基础医学]