Publications
Sort:
Open Access Research Article Issue
Global classical solutions for a class of reaction-diffusion system with density-suppressed motility
Electronic Research Archive 2022, 30(3): 995-1015
Published: 15 March 2022
Abstract PDF (612.2 KB) Collect
Downloads:0

This paper is concerned with a class of reaction-diffusion system with density-suppressed motility

{ut=Δ(γ(v)u)+αuF(w),xΩ,t>0,vt=DΔv+uv,xΩ,t>0,wt=ΔwuF(w),xΩ,t>0,

under homogeneous Neumann boundary conditions in a smooth bounded domain ΩRn(n2), where α>0 and D>0 are constants. The random motility function γ satisfies

γC3((0,+)),γ>0,γ<0on(0,+)andlimv+γ(v)=0.

The intake rate function F satisfies FC1([0,+)),F(0)=0 and F>0 on (0,+). We show that the above system admits a unique global classical solution for all non-negative initial data u0W1,(Ω),v0W1,(Ω),w0W1,(Ω). Moreover, if there exist k>0 and v¯>0 such that

infv>v¯vkγ(v)>0,

then the global solution is bounded uniformly in time.

Total 1