Generation and propagation of interfaces in reaction-diffusion systems

Generation and propagation of interfaces in reaction-diffusion systems
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反应扩散系统中界面的生成和传播

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发表时间:
1992
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通讯作者:
Xinfu Chen
Xinfu Chen
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作者:
Xinfu Chen

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研究了反应扩散方程组第二初边值问题:ute − eΔ ue = 1/ef(ue,e)<$1/e [ue(1 − ue 2)− e e − Δ e = ue − γ e解(ue,e)在e0时的渐近性态,其中γ > 0为常数.当n ∈(−2 <$3/9,2 <$3/9)时,f是n,因为常微分方程ut = f(u,n)有两个稳定解u = h −(n)和u = h +(n),以及一个不稳定解u = h 0(n),其中h −(n)、h 0(n)和h +(n)是代数方程f(u,n)= 0的三个解
This paper is concerned with the asymptotic behavior, as e0, of the solution (u e , υ e ) of the second initial-boundary value problem of the reaction-diffusion system: u t e − eΔu e = 1/e f(u e , υ e) ≡ 1/e [u e (1 − u e2 ) − υ e υ t e − Δυ e = u e − γυ e where γ > 0 is a constant. When υ ∈ (−2√3/9, 2√3/9), f is bistable in the sense that the ordinary differential equation u t = f(u, υ) has two stable solutions u = h − (υ) and u = h + (υ) and one unstable solution u = h 0 (υ), where h − (υ), h 0 (υ), and h + (υ) are three solutions of the algebraic equation f(u, υ) = 0