矩形波电场下液滴聚并机制

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中图分类号：TE868 文献标志码：A

Abstract：Suspendeddropletsinoilexperience pronouncedpolarizationanddeformationundertheinfluenceofanexternal electricfield.Traditionalgrid-basedmethodsfacelimitations incapturingtheintricatelocalfeaturesof thedroplet interface， whilegridlessparticlemethodsoferadvantageswithrespecttocapturingthedropletinterface.Thepresentstudyestablishes acoupled model，consistingofsmothed particlehydrodynamics（SPH）and finitevolumemethod（FVM）.Thenodal electricfieldforcewassolvedusingtheFVMandtransferredtoSPHparticles.Thereafter，theSPHmethodcalculates theforces andupdatesthepositioninformationofparticle.Thecouplingof theelectricfieldandflow fieldenhances theprecisionofinterfacecaptureand numericalsimulation.The numerical findings werecomparedand validated using published experimental data.Basedonthis，thestudyexaminestheaggregationbehaviorofdropletsunderarectangularwaveelectricfield，ilustratingthe processofdropletaggregationandanalyzingthevariationof interfacialtension.Theresultsshowthattwodropletsapproach eachotherinanoscillting mannerunderarectangularwaveelectric field，withinterfacial tension hinderingdroplet approach and promoting the fusion process.

Keywords：smoothed particle hydrodynamics；finitevolume method；droplet aggregation；interfacial tension

电场引起的流体运动被称为电流体动力学（EHD），其广泛存在于各种实际应用，如喷墨打印[1]、电喷雾[2]、静电纺丝[3]和微流控技术[4]。（剩余13378字）