商品大气压离子源的计算流体力学(CFD)模型
Themotionofionsatatmosphericpressureisgovernedbyelectricalfield-andviscousdrag-forcestoacomparableextent.Thusacomprehensivedescriptionoftheconditionsinanatmosphericpressureionsourcehastoincorporatethe-inmanycasesverycomplex-bulkgasflowsinthesourcegeometry.Numericalmethods,inparticularmoderncomputationalfluiddynamics(CFD)solversystems,arethetoolsofchoicetosimulatethegasflowinAPionsources.Rigorousapplicationofthesemethodscouldresultinanimportantstepforwardonthewayfromtrial-and-errortowardsmodeldrivendesignapproachesfornewAPionsourcegeo-metries.Fromourlatestresearchefforts(seeposter070insessionTP04fordetails)weproposethatsuchamodeldrivendesignprocessispossibleandfeasible.Toanalyzethecurrentstateofthetech-nologyandtoproofthatCFDisausefultoolevenforcomplexfluiddynamicalproblems,wesimulatedthegasflowinacommerciallyavailableAPionsource(BrukerMPIS)andvalidatedtheflowsimulationswithappro-priateexperimentalmethods.Inthiscontributionwepresenttheactualflowsimulation,anexperimentalverification,andadetaileddiscussionoftheresults.