making use of an adaption of Arnold variational principle[4],we construct a family of vortex patches of the inviscid,incompressible steady flow in a finite channel T×[0,1].
The present is concerned with the study of blow-up and global existence of the spherically symmetric solutions for the incompressible Euler equations in RN for any dimension N≥2.The approach is to construct explicit ...The present is concerned with the study of blow-up and global existence of the spherically symmetric solutions for the incompressible Euler equations in RN for any dimension N≥2.The approach is to construct explicit solution with spherical symmetry to study certain blow-up and no blow-up phenomena of solutions to the incompressible Euler equation in RN.展开更多
The topological phases and edge states of a topological Euler insulator on a triangular lattice is studied.Differently from two-band Chern insulators,a topological Euler insulator is a kind of three-band model,describ...The topological phases and edge states of a topological Euler insulator on a triangular lattice is studied.Differently from two-band Chern insulators,a topological Euler insulator is a kind of three-band model,described by the Euler number not the Chern number.The spin textures of a topological Euler insulator in the momentum space is like a Néel-type skyrmion.It is found that the topological edge states exist in the band gap of the topological Euler insulator,and the topological Euler insulator can be transformed into a topological metal without the topological phase transition.展开更多
In this paper,we investigate the dynamical stability of transonic shock solutions for the full compressible Euler system in a two dimensional nozzle with a symmetric divergent part.Building upon the existence and uniq...In this paper,we investigate the dynamical stability of transonic shock solutions for the full compressible Euler system in a two dimensional nozzle with a symmetric divergent part.Building upon the existence and uniqueness results for steady symmetric transonic shock solutions to the nonisentropic Euler system established in[Z.P.Xin and H.C.Yin,The transonic shock in a nozzle,2-D and 3-D complete Euler systems,J.Differential Equations 245(2008)],we prove the dynamical stability of the transonic shock solutions under small perturbations.More precisely,if the initial unsteady transonic flow is located in the symmetric divergent part of the nozzle and the flow is a symmetric small perturbation of the steady transonic flow,we use the characteristic method to establish the dynamical stability.展开更多
基金supported by the NSF of China(12171247)the Startup Foundation for Introducing Talent of NUIST.
摘要making use of an adaption of Arnold variational principle[4],we construct a family of vortex patches of the inviscid,incompressible steady flow in a finite channel T×[0,1].
基金supported by the NSFC(12571253)the GUFS(2025RC025)。
摘要The present is concerned with the study of blow-up and global existence of the spherically symmetric solutions for the incompressible Euler equations in RN for any dimension N≥2.The approach is to construct explicit solution with spherical symmetry to study certain blow-up and no blow-up phenomena of solutions to the incompressible Euler equation in RN.
基金supported by the National Natural Science Foundation of China(Grants Nos.12174288 and 12274326)the National Key R&D Program of China(Grant No.2021YFA1400602)。
摘要The topological phases and edge states of a topological Euler insulator on a triangular lattice is studied.Differently from two-band Chern insulators,a topological Euler insulator is a kind of three-band model,described by the Euler number not the Chern number.The spin textures of a topological Euler insulator in the momentum space is like a Néel-type skyrmion.It is found that the topological edge states exist in the band gap of the topological Euler insulator,and the topological Euler insulator can be transformed into a topological metal without the topological phase transition.
基金supported in part by NSFC(Grant Nos.12271205,12171498).
摘要In this paper,we investigate the dynamical stability of transonic shock solutions for the full compressible Euler system in a two dimensional nozzle with a symmetric divergent part.Building upon the existence and uniqueness results for steady symmetric transonic shock solutions to the nonisentropic Euler system established in[Z.P.Xin and H.C.Yin,The transonic shock in a nozzle,2-D and 3-D complete Euler systems,J.Differential Equations 245(2008)],we prove the dynamical stability of the transonic shock solutions under small perturbations.More precisely,if the initial unsteady transonic flow is located in the symmetric divergent part of the nozzle and the flow is a symmetric small perturbation of the steady transonic flow,we use the characteristic method to establish the dynamical stability.