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Global weak solutions for a 3D chemotaxis–Stokes system with slow p-Laplacian diffusion and rotation
Nonlinear Analysis: Real World Applications ( IF 1.8 ) Pub Date : 2020-05-22 , DOI: 10.1016/j.nonrwa.2020.103163
Mengdi Zhuang , Wei Wang , Sining Zheng

In this paper we study the chemotaxis–Stokes system with slow p-Laplacian diffusion and rotation: nt+un=(|n|p2n)(nS(x,n,c)c), ct+uc=Δcnc, ut+P=Δu+nϕ+f(x,t) and u=0 in a bounded domain ΩR3 with p>2, subject to the Neumann–Neumann–Dirichlet boundary conditions, where ϕ:Ω̄R, f:Ω̄×[0,)R3 and S:Ω̄×[0,)2R3×3 are given sufficiently smooth functions with f bounded in Ω×(0,), |S(x,n,c)|S0(c)(1+n)α for (x,n,c)Ω̄×[0,)2 with α0, and nondecreasing function S0:[0,)[0,). It is proved that the problem possesses a globally bounded weak solution provided α+43p>259 and 11p+6α+2αp>23. This extends the current global boundedness result by Tao and Li (2020), where the case of α=0 was well solved. It is mentioned that, without constructing coupled energy functionals, the technique used in the present paper is somewhat different.



中文翻译:

缓慢的3D趋化-Stokes系统的全局弱解 p拉普拉斯的扩散和旋转

在本文中,我们研究了慢速趋化-斯托克斯系统 p拉普拉斯的扩散和旋转: ñŤ+üñ=|ñ|p-2ñ-ñ小号XñCCCŤ+üC=ΔC-ñCüŤ+P=Δü+ñϕ+FXŤü=0 在有界域中 Ω[R3p>2,受Neumann–Neumann–Dirichlet边界条件的约束,其中 ϕΩ̄[RFΩ̄×[0[R3小号Ω̄×[02[R3×3 被赋予足够平滑的功能 F 界于 Ω×0|小号XñC|小号0C1个+ñ-α 对于 XñCΩ̄×[02α0和非递减功能 小号0[0[0。证明该问题具有提供的全局有界弱解α+43p>25911p+6α+2αp>23。这扩展了Tao和Li(2020)当前的全球有界性结果,在这种情况下α=0解决得很好。值得一提的是,在不构建耦合能量泛函的情况下,本文使用的技术有所不同。

更新日期:2020-05-22
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