Attractors for autonomous and nonautonomous 3D Benjamin-Bona-Mahony equations

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• 作者：Jum-Ran Kang ; ^{pointegg@hanmail.net" class="auth_mail" title="E-mail the corresponding author}
• 关键词：3D Benjamin&ndash ; Bona&ndash ; Mahony equations ; Global attractor ; Uniform attractor ; Asymptotic regularity
• 刊名：Applied Mathematics and Computation
• 出版年：2016
• 出版时间：1 February 2016
• 年：2016
• 卷：274
• 期：Complete
• 页码：343-352
• 全文大小：336 K

文摘

In this paper we consider the long time behavior of the three dimensional Benjamin–Bona–Mahony equations for the autonomous and nonautonomous cases. A useful decomposition method is introduced to overcome the difficulties in proving the asymptotical regularity of the 3D Benjamin–Bona–Mahony equations. For the autonomous case, we prove the existence of global attractor when the external forcing belongs to V′. For the nonautonomous case, we only assume that f(x, t) is translation bounded instead of translation compact. By means of this useful decomposition methods, we prove the asymptotic regularity of solutions of 3D Benjamin–Bona–Mahony equations and also obtain the existence of the uniform attractor.