Energy decay for a dissipative wave equation with variable coefficients(变系数耗散波动方程的能量衰减估计)

研究了在(0,∞)×Rn上,变系数耗散波动方程的能量在外区域上的衰减估计,得到:若初值{u0,u1}属于能量空间且具有紧支集,则在Rn上存在一个外区域Xm,使得对任意t≥0和m>0,有dx≤C (1+t)-m; 进一步,若u0+u1 = 0,还可以得到 | u |2dx≤C(1 + t)-m,t≥0....

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Bibliographic Details
Main Authors: ZHAOJinglei(赵菁蕾), WUBang(吴邦)
Format: Article
Language:zho
Published: Zhejiang University Press 2018-03-01
Series:Zhejiang Daxue xuebao. Lixue ban
Subjects:
Online Access:https://doi.org/10.3785/j.issn.1008-9497.2018.02.003