Emergence of lager densities in chemotaxis system with indirect signal production and non-radial symmetry case (2010.05641v7)

Abstract: This paper deals with the classical solution of the following chemotaxis system with generalized logistic growth and indirect signal production \begin{eqnarray} \left{ \begin{array}{llll} & u_t=\epsilon\Delta u-\nabla\cdot(u\nabla v)+ru-\mu u^\theta,\ & 0=d_1\Delta v-\beta v+\alpha w,\ & 0=d_2\Delta w-\delta w+\gamma u \end{array} \right. \qquad(0.1)\end{eqnarray} and the so-called strong $W^{1, q}(\Omega)$-solution of hyperbolic-elliptic-elliptic model \begin{eqnarray} \left{ \begin{array}{llll} & u_t=-\nabla\cdot(u\nabla v)+ru-\mu u^\theta,\ & 0=d_1\Delta v-\beta v+\alpha w,\ & 0=d_2\Delta w-\delta w+\gamma u, \end{array} \right.\ \qquad(0.2)\end{eqnarray} in arbitrary bounded domain $\Omega\subset\mathbb{R}^n$, $n\geq1$, where $r, \mu, d_1, d_2, \alpha, \beta, \gamma, \delta>0$ and $\theta>1$. Via applying the viscosity vanishing method, we first prove that the classical solution of (0.1) will converge to the strong $W^{1, q}(\Omega)$-solution of (0.2) as $\epsilon\rightarrow0$. After structuring the local well-pose of (0.2), we find that the strong $W^{1, q}(\Omega)$-solution will blow up in finite time with non-radial symmetry setting if $\Omega$ is a bounded convex domain, $\theta\in(1, 2]$, and the initial data is suitable large. Moreover, for any positive constant $M$ and the classical solution of (0.1), if we add another hypothesis that there exists positive constant $\epsilon_0(M)$ with $\epsilon\in(0,\ \epsilon_0(M))$, then the classical solution of (0.1) can exceed arbitrarily large finite value in the sense: one can find some points $\left(\tilde{x}, \tilde{t}\right)$ such that $u(\tilde{x}, \tilde{t})>M$.