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首页> 外文期刊>Journal of mathematical sciences, The University of Tokyo >On Leray's Problem for Almost Periodic Flows
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On Leray's Problem for Almost Periodic Flows

机译:关于Leray的概周期流问题

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Weproveexistenceanduniquenessforfully-developed(Poiseuille-type)flowsinsemi-infinitecylinders,inthesettingof(time)almost-periodicfunctions.InthecaseofStepanovalmost-periodicfunctionstheproofisbasedonadetailedvariationalanalysisofalinear``inverse''problem,whileintheBesicovitchsettingtheprooffollowsbyapreciseanalysisinwave-numbers.Next,weuseourresultstoconstructauniquealmostperiodicsolutiontothesocalled``Leray'sproblem''concerning3Dfluidmotionintwosemi-infinitecylindersconnectedbyaboundedreservoir.InthecaseofStepanovfunctionsweneedanaturalrestrictiononthesizeoftheflux(withrespecttotheviscosity),whileforBesicovitchsolutionscertainlimitationsonthegeneralisedFouriercoefficientsarerequested.
机译:Weproveexistenceanduniquenessforfully开发(泊肃叶型)flowsinsemi-infinitecylinders,inthesettingof(时间)几乎periodicfunctions.InthecaseofStepanovalmost-periodicfunctionstheproofisbasedonadetailedvariationalanalysisofalinear``inverse''problem,whileintheBesicovitchsettingtheprooffollowsbyapreciseanalysisinwave-numbers.Next,weuseourresultstoconstructauniquealmostperiodicsolutiontothesocalled``Leray'sproblem''concerning3Dfluidmotionintwosemi-infinitecylindersconnectedbyaboundedreservoir.InthecaseofStepanovfunctionsweneedanaturalrestrictiononthesizeoftheflux(相对于粘度),同时要求对Besicovitch解决方案确定通用傅立叶系数的某些限制。

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