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....
Main Authors: | , |
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Format: | Article |
Language: | zho |
Published: |
Zhejiang University Press
2018-03-01
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Series: | Zhejiang Daxue xuebao. Lixue ban |
Subjects: | |
Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2018.02.003 |