上网板对滤毒罐气动特性影响数值模拟研究

司芳芳1，皇甫喜乐1，叶平伟1，2，王立莹1，王泠沄1，吴　琼1

（1.防化研究院，北京100191；2.国民核生化灾害防护国家重点实验室，北京　102205）

摘　要：为了研究滤毒罐上网板结构优化的设计依据，采用数值模拟方法研究了不同上网板结构对某新型滤毒罐气动特性影响。采用三维纳维-斯托克斯方程和低雷诺数修正k-ε 湍流模型求解，主要分析了同一气流流量下，上网板开孔分别为辐射状、圆形、方形和正六边形对滤毒罐通气阻力、吸附层流场结构的影响。研究结果表明，上网板开孔为辐射状时，对吸附层遮挡面积最小，滤毒罐通气阻力最小，吸附层利用率最高；而上网板开孔为圆形时，对吸附层遮挡面积最大，滤毒罐通气阻力最大。

关键词：滤毒罐；气动特性；通气阻力；上网板

中图分类号：TJ02　文献标识码：A

作者简介：司芳芳（1985—），女，助理研究员，博士，主要从事核生化防护装备数值仿真研究。(www.xing528.com)

Numerical simulation of the upper sieve diaphragm influence on the aerodynamic characteristics of a gas mask canister

SI Fangfang1，HUANGFU Xile1，YE Pingwei1，2 WANG Liying1，Wang Lingyun1，WU Qiong1

（1.Research Institute of Chemical Defense，Beijing 100191，China；2.State Key Laboratory of NBC Protection for Civilian，Beijing 102205，China）

Abstract：In order to study the design basis of the upper sieve diaphragm of a gas mask canister，the influ⁃ence of different upper sieve diaphragm structures on the canister’ s aerodynamic characteristics was studied by using computational fluid dynamics methods.The three-dimensional Navier-Stokes equation and low Reynolds number correction k-ε turbulence model were employed.The influence of radial，circular，square，and regular hexagonal holes on the pressure drop and the flow field are analyzed under the same flow rate.The results show that when the hole of the upper sieve diaphragm is radial，the shielding area of the adsorption layer is the smal⁃lest，the pressure drop is the smallest，and the utilization rate of the adsorption layer is the highest.When the hole of the upper sieve diaphragm is circular，the shielding area of the adsorption layer is the largest，and the pressure drop is the largest.

Keywords：canister；aerodynamic characteristics；pressure drop；upper sieve diaphragm