分析化学2016，Vol.44Issue(11)：1707-1714,8.DOI:10.11895/j.issn.0253-3820.160323
密闭式电喷雾离子源中流场的分布特征
Numerical Simulation of Fluid Distribution in Closed Electrospray Ion Source
摘要
Abstract
Two-dimensional axisymmetric simulations of electrospray ion source were built by Fluent software. The gas flow distribution was evaluated under comparable conditions, including configurations of ion source, ways to pump auxiliary gas and gas flow rates. The simulation results suggested that, rectangular ion source produced more stable flow distribution than other ion sources. Despite liquid flow was focused by both coaxial gas and orthogonal gas, the two pump ways had different effects on gas flow distribution. With the flow rate of coaxial gas increasing, backmixing region near the nozzle was enlarged and the stagnation point was changed, while the size of backmixing region was almost invariably with flow rate of orthogonal gas. The experimental validation was performed using Turbo V. The influences of spray needle position and gas flow rate on the detection of total ion current ( TIC) were investigated. The experimental results agreed well with numerical simulation results.关键词
电喷雾离子源/气体流场分布/Fluent模拟软件Key words
Electrospray ion source/Gas flow distribution/Fluent simulation soltware引用本文复制引用
高方园,张庆合,黄兆亮,王伯良,张维冰..密闭式电喷雾离子源中流场的分布特征[J].分析化学,2016,44(11):1707-1714,8.基金项目
本文系国家自然科学基金(No.21235005)和国家重大仪器设备开发专项(No.2012YQ120044)资助。 （No.21235005）
