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Global classical solvability and stabilization in a two-dimensional chemotaxis–fluid system with sub-logarithmic sensitivity

    https://doi.org/10.1142/S0218202523400031Cited by:3 (Source: Crossref)
    This article is part of the issue:

    In this paper, we consider the following system:

    {nt+un=Δn(nχ(c)c),ct+uc=Δccn,ut+κ(u)u=Δu+P+nΦ,
    in a smoothly bounded domain Ω2, with κ{0,1} and a given function
    χ(c)=1c𝜃
    with 𝜃[0,1). It is proved that if κ=1 then for appropriately small initial data an associated no-flux/no-flux/Dirichlet initial-boundary value problem is globally solvable in the classical sense, and that if κ=0 then under a different but still suitable smallness restriction of the initial data, a corresponding initial-boundary value problem subject to no-flux/no-flux/Dirichlet boundary conditions admits a unique classical solution which is globally bounded and approaches a constant equilibria (ˉn0,0,0) in L(Ω)×W1,(Ω)×L(Ω) as t, with ˉn0:=1|Ω|Ωn0.

    Communicated by Michael Winkler & Youshan Tao

    AMSC: 35B65, 35B40, 35K55, 92C17, 35Q35, 35Q92