{"title":"带阻尼的三维无粘磁微极方程解的全局适定性和大时性","authors":"Xinliang Li, Dandan Ding","doi":"10.1080/00036811.2023.2271946","DOIUrl":null,"url":null,"abstract":"AbstractWe first establish the existence of global strong solutions to the 3D inviscid incompressible magneto-micropolar equations with a velocity damping in Sobolev spaces HK(K⩾3), where the H3 norm of initial data is small, but its higher order derivatives could be large. Combining the H˙−s norm (0≤s<32) or B˙2,∞−s norm (0<s≤32) of the initial magnetic field is finite with some tricky interpolation estimates, we show ‖∇nB(t)‖L2≤C0(1+t)−n2−32p+34 and two faster decay rates for the velocity and the micro-rotation field ‖∇n(U,w)(t)‖L2≤C0(1+t)−n2−32p+14, which are shown to be the usual Lp−L2 (1≤p≤2) type of the optimal time decay rates for 3D inviscid incompressible magneto-micropolar equations with damping. We then conclude the damping term contributes to weaken the assumption of initial condition and enhance the decay rate of velocity compared to the classical incompressible viscous magneto-micropolar equations. Meanwhile, for the 3D inviscid compressible magneto-micropolar fluid, the damping term also has the same effect on the decay rate of the velocity.Keywords: Global well-posednessoptimal decay ratesmagneto-micropolar fluidsvelocity dampingMathematics Subject Classifications (2010): 35Q3535B4076D03 AcknowledgmentsThe authors would like to thank the referees for their careful reading of the work and their many helpful suggestions. Thanks are also due to Professor Zhong Tan for his support and constant encouragement.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":55507,"journal":{"name":"Applicable Analysis","volume":"37 1","pages":"0"},"PeriodicalIF":1.1000,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Global well-posedness and large-time behavior of solutions to the 3D inviscid magneto-micropolar equations with damping\",\"authors\":\"Xinliang Li, Dandan Ding\",\"doi\":\"10.1080/00036811.2023.2271946\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"AbstractWe first establish the existence of global strong solutions to the 3D inviscid incompressible magneto-micropolar equations with a velocity damping in Sobolev spaces HK(K⩾3), where the H3 norm of initial data is small, but its higher order derivatives could be large. Combining the H˙−s norm (0≤s<32) or B˙2,∞−s norm (0<s≤32) of the initial magnetic field is finite with some tricky interpolation estimates, we show ‖∇nB(t)‖L2≤C0(1+t)−n2−32p+34 and two faster decay rates for the velocity and the micro-rotation field ‖∇n(U,w)(t)‖L2≤C0(1+t)−n2−32p+14, which are shown to be the usual Lp−L2 (1≤p≤2) type of the optimal time decay rates for 3D inviscid incompressible magneto-micropolar equations with damping. We then conclude the damping term contributes to weaken the assumption of initial condition and enhance the decay rate of velocity compared to the classical incompressible viscous magneto-micropolar equations. Meanwhile, for the 3D inviscid compressible magneto-micropolar fluid, the damping term also has the same effect on the decay rate of the velocity.Keywords: Global well-posednessoptimal decay ratesmagneto-micropolar fluidsvelocity dampingMathematics Subject Classifications (2010): 35Q3535B4076D03 AcknowledgmentsThe authors would like to thank the referees for their careful reading of the work and their many helpful suggestions. Thanks are also due to Professor Zhong Tan for his support and constant encouragement.Disclosure statementNo potential conflict of interest was reported by the author(s).\",\"PeriodicalId\":55507,\"journal\":{\"name\":\"Applicable Analysis\",\"volume\":\"37 1\",\"pages\":\"0\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-10-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applicable Analysis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/00036811.2023.2271946\",\"RegionNum\":4,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATHEMATICS, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applicable Analysis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/00036811.2023.2271946","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}
Global well-posedness and large-time behavior of solutions to the 3D inviscid magneto-micropolar equations with damping
AbstractWe first establish the existence of global strong solutions to the 3D inviscid incompressible magneto-micropolar equations with a velocity damping in Sobolev spaces HK(K⩾3), where the H3 norm of initial data is small, but its higher order derivatives could be large. Combining the H˙−s norm (0≤s<32) or B˙2,∞−s norm (0
期刊介绍:
Applicable Analysis is concerned primarily with analysis that has application to scientific and engineering problems. Papers should indicate clearly an application of the mathematics involved. On the other hand, papers that are primarily concerned with modeling rather than analysis are outside the scope of the journal
General areas of analysis that are welcomed contain the areas of differential equations, with emphasis on PDEs, and integral equations, nonlinear analysis, applied functional analysis, theoretical numerical analysis and approximation theory. Areas of application, for instance, include the use of homogenization theory for electromagnetic phenomena, acoustic vibrations and other problems with multiple space and time scales, inverse problems for medical imaging and geophysics, variational methods for moving boundary problems, convex analysis for theoretical mechanics and analytical methods for spatial bio-mathematical models.