阻尼Navier-Stokes系统的渐近吸引子

本文通过构造一个有限维解序列,研究了二维阻尼驱动Navier-Stokes方程的渐近吸引子,并证明了该解序列在长时间内无限逼近全局吸引子,最后给出了渐近吸引子的维数估计.     

KdV-Burgers-Kuramoto系统的渐近吸引子

研究了 KdV-Burgers-Kuramoto 方程的渐近吸引子,即利用正交分解法构造一个有限维解序列。首先用数学归纳法证明了该解序列不会远离方程的整体吸引子,接着证明解序列在长时间后无限趋于方程的整体吸引子,最后给出渐近吸引子的维数估计。     

反应扩散方程的渐近吸引子

本文考虑了反应扩散方程的渐近吸引子，即构造了一个有限维解序列。首先利用数学归纳法证明了该解序列不会远离方程的整体吸引子，其次证明了它在长时间后无限趋于方程的整体吸引子，并且给出了渐近吸引子的维数估计。     

非线性梁方程的渐近吸引子

研究了一类非线性梁方程的渐近吸引子.即利用正交分解法构造一个有限维解序列.首先用数学归纳法证明了该解序列不会远离方程的整体吸引子,其次证明了它在长时间后无限趋于方程的整体吸引子,并给出了渐近吸引子的维数估计.     

2D Navier-Stokes方程的渐近吸引子

考虑了2D周期边界条件下Navier-Stokes方程渐近吸引子，即构造了一个有限维解序列，首先证明了该序列不会远离方程的整体吸引子，然后证明了它在长时间后无限趋于方程的整体吸引子，并给出了渐近吸引子的维数估计．     

广义双色散热耦合方程组的初边值问题

研究了一类广义双色散热耦合方程组的初边值问题在齐次边界条件下的吸引子.首先通过Faedo-Galerkin方法证明了整体解的存在唯一性;其次通过证明系统的衰减性和渐近紧性,得到了系统存在全局吸引子;最后证明了该系统的全局吸引子存在有限分形维数.     

Kolmogorov-Spieqel-Sivashinsky方程的渐近吸引子及维数估计

研究了周期边界条件下Kolmogorov-Spieqel-Sivashinsky方程的渐近吸引子,并给出了它的维数估计.首先利用正交分解法构造了一个有限维解序列,然后分两步证明该解序列收敛于方程的真实解.     

Ladyzhenskaya流体力学方程组的拉回吸引子与不变测度

本文讨论带周期边界条件的二维Ladyzhenskaya流体力学方程组解的渐近行为.作者先证明该流体力学方程组存在拉回吸引子,然后证明该拉回吸引子上存在唯一不变Borel概率测度.     

具结构阻尼的耦合梁方程组在非线性边界条件下的吸引子

研究了具有转动惯量和结构阻尼的耦合梁方程组在非线性边界条件下的吸引子.首先通过Faedo-Galerkin方法证明了整体解的存在唯一性,其次证明了系统存在有界吸收集和半群的渐近光滑性,最后得到了全局吸引子的存在.     

带有记忆项的非自治第一类型热弹性Timoshenko系统解的整体存在性、渐近性及其一致吸引子（英文）

本文研究带有记忆项的非自治第一类型热弹性Timoshenko系统解的整体存在性、渐近性及其一致吸引子.首先利用半群理论,获得了解的整体存在性.其次研究解的渐近行为.最后利用一致压缩函数法证明一致吸引子的存在性.     

Asymptotic autonomy of random attractors for BBM equations with Laplace-multiplier noise

We study asymptotic autonomy of random attractors for possibly non-autonomous Benjamin-Bona-Mahony equations perturbed by Laplace-multiplier noise. We assume that the time-indexed force converges to the time-independent force as the time-parameter tends to negative infinity, and then show that the time-indexed force is backward tempered and backward tail-small. These properties allow us to show that the asymptotic compactness of the non-autonomous system is uniform in the past, and then obtain a backward compact random attractor when the attracted universe consists of all backward tempered sets. More importantly, we prove backward convergence from time-fibers of the non-autonomous attractor to the autonomous attractor. Measurability of solution mapping, absorbing set and attractor is rigorously proved by using Egoroff, Lusin and Riesz theorems.     

Random attractor for the stochastic Cahn–Hilliard–Navier–Stokes system with small additive noise

The objective of this paper is to study the asymptotic behavior of solutions, in terms of the upper semi-continuous property of random attractor, of the Cahn–Hilliard–Navier–Stokes system with small additive noise. We prove the existence of a random attractor for the Cahn–Hilliard–Navier–Stokes system with small additive noise. Furthermore, we consider the stability of global attractor and prove the random attractor of the Cahn–Hilliard–Navier–Stokes system with small additive noise will convergent to the global attractor of the unperturbed Cahn–Hilliard–Navier–Stokes system when the parameter of the perturbation ε tends to zero.     

Asymptotic autonomous attractors for a stochastic lattice model with random viscosity

We study forward asymptotic autonomy of a pullback random attractor for a non-autonomous random lattice system and establish the criteria in terms of convergence, recurrence, forward-pullback absorption and asymptotic smallness of the discrete random dynamical system. By applying the abstract result to both non-autonomous and autonomous stochastic lattice equations with random viscosity, we show the existence of both pullback and global random attractors such that the time-component of the pullback attractor semi-converges to the global attractor as the time-parameter tends to infinity.     

Neumann边界条件下强阻尼波动方程的一维全局吸引子

本文主要考虑齐次Neumann边界条件下强阻尼波动方程的全局吸引子的存在性．利用渐近时间周期微分方程的极限集的性质，证明了在一定的参数范围内，齐次Neumann边界条件下强阻尼波动方程存在一维全局吸引子，是一条水平曲线．     

Neumann边界条件下强阻尼波动方程的一维全局吸引子

本文主要考虑齐次Neumann边界条件下强阻尼波动方程的全局吸引子的存在性．利用渐近时间周期微分方程的极限集的性质,证明了在一定的参数范围内,齐次Neumann边界条件下强阻尼波动方程存在一维全局吸引子,是一条水平曲线．     

Random attractor and upper semi-continuity for Zakharov lattice system with multiplicative white noise

In this paper, we study the long-term asymptotic behaviour of solutions to the stochastic Zakharov lattice equation with multiplicative white noise. We first transfer the stochastic lattice equation into a random lattice equation and prove the existence and uniqueness of solutions which generate a random dynamical system. Then we consider the existence of a tempered random bounded absorbing set and a random attractor for the system. Finally we establish the upper semi-continuity of random attractor to the global attractor of the limiting system as the coefficients of the white noise terms tend to zero.