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帶阻尼項(xiàng)的g-Navier-Stokes方程的全局吸引子

2021-07-06 05:16劉文婧姜金平熊坤翠

劉文婧 姜金平 熊坤翠

摘 要:考慮帶非線性阻尼項(xiàng)cuβu的g-Navier-Stokes方程解的長(zhǎng)時(shí)間行為,通過(guò)驗(yàn)證完備度量空間X上的一個(gè)連續(xù)半群{S(t)}t≥0存在有界吸收集BX和{S(t)}t≥0的漸近緊性,得出全局吸引子存在。

關(guān)鍵詞:非線性阻尼;g-Navier-Stokes方程;全局吸引子;吸收集;漸近緊

中圖分類(lèi)號(hào):O175.29

文獻(xiàn)標(biāo)志碼:A

4 結(jié)論

本文驗(yàn)證了帶非線性阻尼項(xiàng)cuβu的g-Navier-Stokes方程存在全局吸引子,進(jìn)一步完善了2Dg-Navier-Stokes系統(tǒng)理論,有利于該系統(tǒng)指數(shù)吸引子的研究,同時(shí)期待本文的方法和結(jié)論能對(duì)3Dg-Navier-Stokes系統(tǒng)的研究有幫助。

參考文獻(xiàn):

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[4] ROH J. Convergence of the g-navier-stokes equations[J]. Journal of Differential Equations, 2009, 211(2):452-484.

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[9] 姜金平, 王小霞, 侯延仁. 一類(lèi)含線性阻尼的非線性自治g-Navier-Stokes系統(tǒng)解的漸近光滑效應(yīng)[J]. 西北大學(xué)學(xué)報(bào)(自然科學(xué)版), 2017,47(4):471-475.

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(責(zé)任編輯:于慧梅)

The Global Attractor of g-Navier-Stokes Equations with Dampness

LIU Wenjing, JIANG Jinping*, XIONG Kuncui

(College of Mathematics and Computer Science, Yan an University, Yan an 716000, China)

Abstract:

The long time behaviors of g-Navier-Stokes equations with dampness were investigated. The bounded absorbing set of a continuous semigroup S{t}t≥0in a complete metric space X is verified and the asymptotic compactness of the semigroup S{t}t≥0was proved,hence the existence of the global attractor for the equations was proved.

Key words:

nolinear dampness; g-Navier-Stokes equations; global attractor; bounded absorbing set; asymptotic compact

收稿日期:2020-09-25

基金項(xiàng)目:陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃資助項(xiàng)目(2018JM1042)

作者簡(jiǎn)介:劉文婧(1994—),女,在讀碩士,研究方向:無(wú)窮維動(dòng)力系統(tǒng),E-mail:1357850443@qq.com.

通訊作者:姜金平,E-mail:yadxjjp@163.com.

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