吉林大学学报（理学版）2019，Vol.57Issue(3)：598-606,9.DOI:10.13413／j.cnki.jdxblxb.2018283
基于多重网格的大长径比颗粒仿真计算
SimulationCalculationofParticlewithLargeRatioof LengthtoDiameterBasedon Multigrid
摘要
Abstract
Aimingattheproblemthatthecontactcomputationwascomplexduetothelargemeshsize whenusingsinglegridmethodforneighborsearch,weproposedanew methodbasedon multigrid. First,themethodvirtualdiscretizedparticlewithlargeratiooflengthtodiameter(suchaslongstraw particles)intosmallones,thenthediscreteparticles were mixed with otherparticles,andthe multigrid method wasusedtosearch neighbor.Theexperimentalresultsshow thatthe method reducesthesizeofneighborsearchgridandthenumberofneighborelementparticles,thusshortens thecontactcalculationtimeandimprovesthecalculationefficiency.关键词
多重网格/长径比/离散元法/接触计算Key words
multigrid/ratiooflengthtodiameter/discreteelementmethod/contactcalculation分类
信息技术与安全科学引用本文复制引用
孙冰,刘元宁,付宏,于建群..基于多重网格的大长径比颗粒仿真计算[J].吉林大学学报（理学版）,2019,57(3):598-606,9.基金项目
国家自然科学基金(批准号:51675218)和国家重点研发计划子课题项目(批准号:2017YFD0700104). （批准号:51675218）
