Boundedness in chemotaxis systems with rotational flux terms
Boundedness in chemotaxis systems with rotational flux terms
复制标题
DOI:
10.1002/mana.201500325
复制
发表时间:
2016-03
影响因子:
1
通讯作者:
Qingshan Zhang
中科院分区:
文献类型:
--
作者:
Qingshan Zhang
We consider the chemotaxis system with rotation ut=Δu−∇·(uS(x,u,v)∇v),x∈Ω,t>0,vt=Δv−f(x,u,v),x∈Ω,t>0,under no‐flux boundary conditions in the bounded domain Ω⊂Rn , n≥1 . Here the matrix‐valued function S∈C2Ω¯×[0,∞)2;Rn×n fulfills S(x,u,v)≤S0(v)(1+u)θ ( θ≥0 ) for all (x,u,v)∈Ω¯×[0,∞)2 with some nondecreasing function S0 and f∈C1Ω¯×[0,∞)2;R is a nonnegative function with f(x,u,0)=0 for all (x,u)∈Ω¯×[0,∞) . Moreover, f satisfies f(x,u,v)≤f0(v)(u+1) for all (x,u,v)∈Ω¯×[0,∞)2 with nondecreasing function f0. It is shown that for the nonnegative initial data u0∈C0(Ω¯) and v0∈W1,q(Ω) with q>max{n,2} , if at least one of the following assumptions holds: n=1 , n≥2 , θ=0 and S0∥v0∥L∞(Ω)∥v0∥L∞(Ω)0 , then the corresponding initial‐boundary value problem possesses a unique global classical solution that is uniformly bounded.