English

Global solutions of a doubly tactic resource consumption model with logistic source

Analysis of PDEs 2022-01-19 v1

Abstract

We study a doubly tactic resource consumption model \bess \left\{\begin{array}{lll} u_t=\tr u-\nabla\cd(u\nabla w),\\[1mm] v_t=\tr v-\nabla\cd(v\nabla u)+v(1-v^{\beta-1}),\\[1mm] w_t=\tr w-(u+v)w-w+r \end{array}\right. \eess in a smooth bounded domain \ooR2\oo\in\R^2 with homogeneous Neumann boundary conditions, where rC1(Ωˉ×[0,))L(Ω×(0,))r\in C^1(\bar\Omega\times[0,\infty))\cap L^\infty(\Omega\times(0,\infty)) is a given nonnegative function fulfilling \bess \int_t^{t+1}\ii|\nn\sqrt{r}|^2<\yy\ \ \ \ \ \ for\ all\ t>0. \eess It is shown that, firstly, if β>2\beta>2, then the corresponding Neumann initial-boundary problem admits a global bounded classical solution. Secondly, when β=2\beta=2, the Neumann initial-boundary problem admits a global generalized solution.

Keywords

Cite

@article{arxiv.2108.08031,
  title  = {Global solutions of a doubly tactic resource consumption model with logistic source},
  author = {Jianping Wang},
  journal= {arXiv preprint arXiv:2108.08031},
  year   = {2022}
}

Comments

21 pages

R2 v1 2026-06-24T05:12:51.390Z