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Special Issue on Modeling and Related Problems of Cross Diffusion PhenomenaNo Access

Long-term behaviour in a chemotaxis-fluid system with logistic source

    https://doi.org/10.1142/S021820251640008XCited by:144 (Source: Crossref)

    We consider the coupled chemotaxis Navier–Stokes model with logistic source terms:

    nt+un=Δnχ(nc)+κnμn2,nt+un=Δnχ(nc)+κnμn2,
    ct+uc=Δcnc,ct+uc=Δcnc,
    ut+(u)u=Δu+P+nΦ+f,u=0ut+(u)u=Δu+P+nΦ+f,u=0
    in a bounded, smooth domain Ω3 under homogeneous Neumann boundary conditions for n and c and homogeneous Dirichlet boundary conditions for u and with given functions fL(Ω×(0,)) satisfying certain decay conditions and ΦC1+β(ˉΩ) for some β(0,1). We construct weak solutions and prove that after some waiting time they become smooth and finally converge to the semi-trivial steady state (κμ,0,0).

    Communicated by M. Winkler

    AMSC: 35B40, 35K55, 35B65, 35Q30, 92C17