摘要
Themassflowrateofagranularflowthroughanapertureundergravityisalong-standingchallengeissueinphysicalscience.Weshowthatforsteadyflowfieldclosetolaminarflow,thedynamicalequationstogetherwiththecontinueequationandMohr-circledescriptionofthestressareclosed,andhencesolvable.Inacaseofstreamlineguidedbythetwo-dimensionalhopper,weobtainaconsistentconditionanduseittodeterminethestressandthevelocitydistribution.Ourresultindicatesthat3/2powerscalingbehaviorisrecoveredwithacoefficientC(μ,α)beingafunctionoffrictionalcoefficientandthehopperangle.ItisfoundthatthepredictedcoefficientC(μ,α)iscompatiblewithpreviousstudies.
出版日期
2019年02月12日（中国Betway体育网页登陆平台首次上网日期，不代表论文的发表时间）
